Spinelli Kilcollin's '333' collection is designed in collaboration with fellow LA native HOORSENBUHS. It's been handmade in its home city from sterling silver and has 18-karat gold 'Annulets' wrapped around the centre of its 'Phantom' band.

Spinelli Kilcollin HOORSENBUHS Phantom SK Sterling Silver and 18-Karat Gold Ring

Handcrafted tiered band ring in sterling silver. · Prong-set 1.2 cttw diamonds throughout · Sliding O-ring at sides Supplier color: Yellow gold/Silver

Spinelli Kilcollin Silver Petunia Ash Ring

Tiered band ring in sterling silver. Sliding 18k gold O-ring at sides. Supplier color: Yellow gold/Silver

Spinelli Kilcollin Silver & Gold Taurus Core SY Ring

Tiered band ring in sterling silver. Sliding O-rings in 18k gold at band. Supplier color: Sterling silver

Spinelli Kilcollin Silver & Gold Virgo SY Core Ring

Handcrafted tiered band ring in sterling silver. · Prong-set 2.15 cttw black diamonds at band · Sliding O-rings in 18k gold Supplier color: Yellow gold/Silver

Spinelli Kilcollin Silver & Gold Enzo SG Ring

Tiered band ring in sterling silver. Sliding O-rings at band. Supplier color: Sterling silver

Spinelli Kilcollin Silver Aquarius Petite Ring

Tiered band ring in sterling silver. Sliding O-rings in 18k black gold at band. Supplier color: Sterling silver

Spinelli Kilcollin Silver Orion Ring

Handcrafted tiered band ring in 18k gold and sterling silver. Sliding O-ring at sides. Supplier color: Yellow gold/Silver

Spinelli Kilcollin Silver & Gold Amaryllis Ring

sterling silver polished finish two halo bands 18kt yellow gold connector charms scallop setting round cut black diamonds totalling 2.15 carats pull-on style This piece comes complete with a protective dust bag. Hallmarked in the United Kingdom at the London Assay Office. Normal everyday use and external agents may reduce the lustre of gemstones and gold surfaces. To maintain, use specific, non-abrasive products specially meant for cleaning jewellery.

Spinelli Kilcollin 18kt yellow gold Enzo SG Noir diamond linked rings

18K yellow gold polished finish one band Hallmarked in the United Kingdom at the London Assay Office. All products are handcrafted. This item is made from at least 50% recycled or upcycled materials. We've partnered with Good On You — an independent agency that rates how brands perform in relation to their impact on the planet, people and animals, with a multi-criteria rating simplified to a five points scale. In order to be awarded our conscious label, larger brands need to score a minimum of four out of five ('Good'), while smaller brands must score at least three out of five ('It's a start'). This item comes from a brand rated four out of five ('Good') by Good on You. Please note, this is a brand-level rating and does not guarantee that this product is made with conscious materials. Made in the United States

Spinelli Kilcollin 18K Yellow Gold Half Round Ring

sterling silver 18kt yellow gold polished finish three bands black rhodium-plated band round-cut pavé-set diamonds totalling 0.90 carats Normal everyday use and external agents may reduce the lustre of gemstones and gold surfaces. To maintain, use specific, non-abrasive products specially meant for cleaning jewellery.

Spinelli Kilcollin sterling silver Libra ring

This sterling silver Spinelli Kilcollin Kane ring features a slim band with three 18K yellow gold annulets. Inspired by Kāne, the god of procreation in Hawaiian mythology, the three rings represent his three creations; the dawn, sun and sky. So, rest assured everytime you wear this Spinelli Kilcollin ring, the whole world will be on your side. At Browns we recognise progress over perfection and support brands that are seeking to create positive change. This brand rates well on independent ethical rating platform Good On You.

Spinelli Kilcollin 18kt yellow gold and sterling silver Kane linked ring

18kt yellow gold polished finish 18kt yellow gold two connector charms three 2.3mm sterling silver halo bands pavé setting round cut black diamonds totalling 0.14 carats pull-on style This piece comes complete with a protective dust bag. Hallmarked in the United Kingdom at the London Assay Office. Normal everyday use and external agents may reduce the lustre of gemstones and gold surfaces. To maintain, use specific, non-abrasive products specially meant for cleaning jewellery.

Spinelli Kilcollin 18kt yellow gold Dion SG Noir diamond linked rings

This 18K yellow gold and sterling silver Spinelli Kilcollin Sirius Max diamond ring is crafted in the United States. It features a slim band threaded with three annulets - the first 18K yellow gold, the second sterling silver, and the third adorned with 0.2 carats of pavé set black diamonds. This Spinelli Kilcollin ring is named after the brightest star in the night sky. That makes sense, as we’re thanking our lucky stars that we discovered it. At Browns we recognise progress over perfection and support brands that are seeking to create positive change. This brand rates well on independent ethical rating platform Good On You.

Spinelli Kilcollin 18kt white gold Sirius Max diamond ring

sterling silver/18kt yellow gold/18kt rose gold two silver-tone bands two circular embellishments polished finish

Spinelli Kilcollin silver, 18kt yellow and rose gold Calliope ring

Sterling silver and black rhodium-plated sterling silverPolished finishTwo bandsTwo 18K yellow gold connector charmsHallmarked in the United Kingdom at the London Assay OfficeHandcrafted in the United StatesConscious: We've partnered with Good On You — an ethical agency that rates how sustainably brands perform. This item comes from a brand that performs well in relation to their impact on the planet.

Spinelli Kilcollin Sterling Silver Virgo Ring

Sterling silver Polished finish Three bands Two 18K yellow gold connector charms Pavé setting Round brilliant-cut white diamonds totalling 0.90 carats Handmade in the United States We've partnered with Good On You — an independent agency that rates how brands perform in relation to their impact on the planet, people and animals, with a multi-criteria rating simplified to a five points scale. In order to be awarded our conscious label, larger brands need to score a minimum of four out of five ('Good'), while smaller brands must score at least three out of five ('It's A Start'). This item comes from a brand rated three out of five ('It's A Start') by Good on You. Please note, this is a brand-level rating and does not guarantee that this product is made with conscious materials.

Spinelli Kilcollin 18K Yellow Gold Libra Ring

Sterling silver Polished finish Three bands Three 18K yellow gold connector charms Pavé setting Round brilliant-cut black diamonds totalling 0.14 carats Hallmarked in the United Kingdom at the London Assay Office Handmade in the United States We've partnered with Good On You — an independent agency that rates how brands perform in relation to their impact on the planet, people and animals, with a multi-criteria rating simplified to a five points scale. In order to be awarded our conscious label, larger brands need to score a minimum of four out of five ('Good'), while smaller brands must score at least three out of five ('It's A Start'). This item comes from a brand rated three out of five ('It's A Start') by Good on You. Please note, this is a brand-level rating and does not guarantee that this product is made with conscious materials.

Spinelli Kilcollin Sterling Silver Raneth Diamond Ring

Sterling silver Polished finish Two bands Two 18K yellow gold connector charms Pavé setting Round brilliant-cut black diamonds totalling 2.15 carats Hallmarked in the United Kingdom at the London Assay Office Handmade in the United States We've partnered with Good On You — an independent agency that rates how brands perform in relation to their impact on the planet, people and animals, with a multi-criteria rating simplified to a five points scale. In order to be awarded our conscious label, larger brands need to score a minimum of four out of five ('Good'), while smaller brands must score at least three out of five ('It's A Start'). This item comes from a brand rated three out of five ('It's A Start') by Good on You. Please note, this is a brand-level rating and does not guarantee that this product is made with conscious materials.

Spinelli Kilcollin Sterling Silver Petunia Diamond Ring

Sterling silverPolished finishOne bandTwo sterling silver connector charmsOne 18K yellow gold connector charmPavé settingRound brilliant-cut black diamond totalling 0.2 caratHallmarked in the United Kingdom at the London Assay OfficeHandcrafted in the United StatesConscious: We've partnered with Good On You — an ethical agency that rates how sustainably brands perform. This item comes from a brand that performs well in relation to their impact on the planet.

Spinelli Kilcollin Sterling Silver Sirius Max Diamond Ring

Sterling silverPolished finishOne bandThree 18K yellow gold connector charmsHallmarked in the United Kingdom at the London Assay OfficeHandcrafted in the United StatesConscious: We've partnered with Good On You — an ethical agency that rates how sustainably brands perform. This item comes from a brand that performs well in relation to their impact on the planet.

Spinelli Kilcollin Sterling Silver Kane Ring

Sterling silverPolished finishThree bandsFour 18K rose gold connector charmsOne 18K yellow gold connector charmHallmarked in the United Kingdom at the London Assay OfficeHandcrafted in the United StatesConscious: We've partnered with Good On You — an ethical agency that rates how sustainably brands perform. This item comes from a brand that performs well in relation to their impact on the planet.

Spinelli Kilcollin Sterling Silver Orion Ring

Sterling silverPolished finishTwo bandsOne 18K yellow gold connector charmOne 18K rose gold connector charmPavé settingRound brilliant-cut white diamondHallmarked in the United Kingdom at the London Assay OfficeHandcrafted in the United StatesConscious: We've partnered with Good On You — an ethical agency that rates how sustainably brands perform. This item comes from a brand that performs well in relation to their impact on the planet.

Spinelli Kilcollin Sterling Silver Calliope Ring

These sterling silver Spinelli Kilcollin Orion linked rings can be worn stacked or spread across the fingers. It features two slim bands and one chunkier ring, linked by two 18K rose gold connectors. Three coordinating annulets adorn the anchoring band to echo the balance of constellations that share the jewellery’s namesake. Representing the hunter in Greek mythology, your search for the perfect ring can finally end now that you have this one from Spinelli Kilcollin. At Browns we recognise progress over perfection and support brands that are seeking to create positive change. This brand rates well on independent ethical rating platform Good On You.

Spinelli Kilcollin 18kt rose gold Orion linked ring

18K yellow gold polished finish one band Hallmarked in the United Kingdom at the London Assay Office. All products are handcrafted.

Spinelli Kilcollin 18K yellow gold Half Round ring

These 18K yellow gold and black rhodium Spinelli Kilcollin linked rings are crafted in the label's Los Angeles atelier and can be worn stacked or across the fingers. With a polished finish, these rings feature a sterling silver band, a black rhodium band and two yellow gold connectors. We've always found it very easy to make friends. We always say, 'just give us a ring' - preferably this Spinelli Kilcollin one. At Browns we recognise progress over perfection and support brands that are seeking to create positive change. This brand rates well on independent ethical rating platform Good On You.

Spinelli Kilcollin 18kt yellow gold linked rings

18K yellow gold and black rhodium-plated Sterling silverPolished finishTwo bandsTwo 18K yellow gold connector charmsHallmarked in the United Kingdom at the London Assay OfficeHandcrafted in the United StatesConscious: We've partnered with Good On You — an ethical agency that rates how sustainably brands perform. This item comes from a brand that performs well in relation to their impact on the planet.

Spinelli Kilcollin 18K Yellow Gold Atticus Ring

18K yellow gold, 18K rose gold and sterling silverPolished finishThree bandsOne 18K yellow gold connector charmOne 18K rose gold connector charmHallmarked in the United Kingdom at the London Assay OfficeHandcrafted in the United StatesConscious: We've partnered with Good On You — an ethical agency that rates how sustainably brands perform. This item comes from a brand that performs well in relation to their impact on the planet.

Spinelli Kilcollin 18K Yellow Gold Mercury Ring

18K yellow goldPolished finishOne bandThree 18K yellow gold connector charmsHallmarked in the United Kingdom at the London Assay OfficeHandcrafted in the United StatesConscious: We've partnered with Good On You — an ethical agency that rates how sustainably brands perform. This item comes from a brand that performs well in relation to their impact on the planet.

Spinelli Kilcollin 18K Yellow Gold Sirius Ring

Sterling silverPolished finishOne bandThree sterling silver connector charmsHallmarked in the United Kingdom at the London Assay OfficeHandcrafted in the United StatesConscious: We've partnered with Good On You — an ethical agency that rates how sustainably brands perform. This item comes from a brand that performs well in relation to their impact on the planet.

Spinelli Kilcollin Sterling Silver Sirius Ring

18K yellow gold and black rhodium-plated sterling silverPolished finishTwo bandsOne 18K yellow gold connector charmsPavé settingRound brilliant-cut black diamondHallmarked in the United Kingdom at the London Assay OfficeHandcrafted in the United StatesConscious: We've partnered with Good On You — an ethical agency that rates how sustainably brands perform. This item comes from a brand that performs well in relation to their impact on the planet.

Spinelli Kilcollin 18K Yellow Gold Atticus Diamond Ring

18K yellow goldPolished finishOne bandPavé settingRound brilliant-cut black diamond totalling 1.20 caratHallmarked in the United Kingdom at the London Assay OfficeHandcrafted in the United StatesConscious: We've partnered with Good On You — an ethical agency that rates how sustainably brands perform. This item comes from a brand that performs well in relation to their impact on the planet.

Spinelli Kilcollin 18K Yellow Gold Single Diamond Ring

recycled 18K yellow gold/recycled 18K white gold polished finish two bands one recycled 18K yellow gold connector charm one recycled 18K white gold connector charm pavé setting round brilliant-cut white diamonds totalling 1.50 carats Hallmarked in the United Kingdom at the London Assay Office. All products are handcrafted. Normal everyday use and external agents may reduce the lustre of gemstones and gold surfaces. To maintain, use specific, non-abrasive products specially meant for cleaning jewellery. This item is made from at least 50% recycled or upcycled materials. We've partnered with Good On You — an independent agency that rates how brands perform in relation to their impact on the planet, people and animals, with a multi-criteria rating simplified to a five points scale. In order to be awarded our conscious label, larger brands need to score a minimum of four out of five ('Good'), while smaller brands must score at least three out of five ('It's a start'). This item comes from a brand rated four out of five ('Good') by Good on You. Please note, this is a brand-level rating and does not guarantee that this product is made with conscious materials. Made in the United States

Spinelli Kilcollin 18K Yellow Gold Ceres Diamond Ring

recycled 18K white gold polished finish two bands two recycled 18K white gold connector charms channel setting baguette-cut white diamonds totalling 0.39 carat Hallmarked in the United Kingdom at the London Assay Office. All products are handcrafted. Normal everyday use and external agents may reduce the lustre of gemstones and gold surfaces. To maintain, use specific, non-abrasive products specially meant for cleaning jewellery. This item is made from at least 50% recycled or upcycled materials. We've partnered with Good On You — an independent agency that rates how brands perform in relation to their impact on the planet, people and animals, with a multi-criteria rating simplified to a five points scale. In order to be awarded our conscious label, larger brands need to score a minimum of four out of five ('Good'), while smaller brands must score at least three out of five ('It's a start'). This item comes from a brand rated four out of five ('Good') by Good on You. Please note, this is a brand-level rating and does not guarantee that this product is made with conscious materials. Made in the United States

Spinelli Kilcollin 18K White Gold Callisto Diamond Ring

18K rose gold Polished finish One band One 18K white gold connector charm Hallmarked in the United Kingdom at the London Assay Office Handcrafted in the United States We've partnered with Good On You — an independent agency that rates how brands perform in relation to their impact on the planet, people and animals, with a multi-criteria rating simplified to a five points scale. In order to be awarded our conscious label, larger brands need to score a minimum of four out of five ('Good'), while smaller brands must score at least three out of five ('It's A Start').This item comes from a brand rated three out of five ('It's A Start') by Good on You. Please note, this is a brand-level rating and does not guarantee that this product is made with conscious materials.

Spinelli Kilcollin 18K Rose Gold Adonis Ring

18K white goldPolished finishOne bandHallmarked in the United Kingdom at the London Assay OfficeHandcrafted in the United StatesConscious: We've partnered with Good On You — an ethical agency that rates how sustainably brands perform. This item comes from a brand that performs well in relation to their impact on the planet.

Spinelli Kilcollin 18K White Gold Half Round Ring

recycled 18K white gold polished finish two bands two recycled 18K yellow gold connector charms pavé setting round brilliant-cut white and black diamonds totalling 1.20 carats Hallmarked in the United Kingdom at the London Assay Office. All products are handcrafted. Normal everyday use and external agents may reduce the lustre of gemstones and gold surfaces. To maintain, use specific, non-abrasive products specially meant for cleaning jewellery. This item is made from at least 50% recycled or upcycled materials. We've partnered with Good On You — an independent agency that rates how brands perform in relation to their impact on the planet, people and animals, with a multi-criteria rating simplified to a five points scale. In order to be awarded our conscious label, larger brands need to score a minimum of four out of five ('Good'), while smaller brands must score at least three out of five ('It's a start'). This item comes from a brand rated four out of five ('Good') by Good on You. Please note, this is a brand-level rating and does not guarantee that this product is made with conscious materials. Made in the United States

Spinelli Kilcollin 18K White Gold Virgo Diamond Ring

recycled 18K yellow gold polished finish one band two recycled 18K yellow gold connector charms one recycled sterling silver connector charm Hallmarked in the United Kingdom at the London Assay Office. All products are handcrafted. This item is made from at least 50% recycled or upcycled materials. We've partnered with Good On You — an independent agency that rates how brands perform in relation to their impact on the planet, people and animals, with a multi-criteria rating simplified to a five points scale. In order to be awarded our conscious label, larger brands need to score a minimum of four out of five ('Good'), while smaller brands must score at least three out of five ('It's a start'). This item comes from a brand rated four out of five ('Good') by Good on You. Please note, this is a brand-level rating and does not guarantee that this product is made with conscious materials. Made in the United States

recycled 18K yellow gold polished finish one band one recycled 18K yellow gold annulet charm burnish setting round brilliant-cut white diamonds totalling 0.20 carat Hallmarked in the United Kingdom at the London Assay Office. All products are handcrafted. Normal everyday use and external agents may reduce the lustre of gemstones and gold surfaces. To maintain, use specific, non-abrasive products specially meant for cleaning jewellery. This item is made from at least 50% recycled or upcycled materials. We've partnered with Good On You — an independent agency that rates how brands perform in relation to their impact on the planet, people and animals, with a multi-criteria rating simplified to a five points scale. In order to be awarded our conscious label, larger brands need to score a minimum of four out of five ('Good'), while smaller brands must score at least three out of five ('It's a start'). This item comes from a brand rated four out of five ('Good') by Good on You. Please note, this is a brand-level rating and does not guarantee that this product is made with conscious materials. Made in the United States

Spinelli Kilcollin 18K Yellow Gold Ovio Diamond Ring

Sterling silverPolished finishOne bandOne sterling silver connector charmBurnish settingRound brilliant-cut black diamond totalling 0.20 caratHallmarked in the United Kingdom at the London Assay OfficeHandcrafted in the United StatesConscious: We've partnered with Good On You — an ethical agency that rates how sustainably brands perform. This item comes from a brand that performs well in relation to their impact on the planet.

Spinelli Kilcollin Sterling Silver Ovio Diamond Ring

Sterling silverPolished finishOne bandOne 18K blackened gold connector charmHallmarked in the United Kingdom at the London Assay OfficeHandcrafted in the United StatesConscious: We've partnered with Good On You — an ethical agency that rates how sustainably brands perform. This item comes from a brand that performs well in relation to their impact on the planet.

Spinelli Kilcollin Sterling Silver Adonis Ring

recycled sterling silver polished finish two bands two recycled 18K yellow gold Hoorsenbuhs connector charms Hallmarked in the United Kingdom at the London Assay Office. All products are handcrafted. Normal everyday use and external agents may reduce the lustre of gemstones and gold surfaces. To maintain, use specific, non-abrasive products specially meant for cleaning jewellery. This item is made from at least 50% recycled or upcycled materials. We've partnered with Good On You — an independent agency that rates how brands perform in relation to their impact on the planet, people and animals, with a multi-criteria rating simplified to a five points scale. In order to be awarded our conscious label, larger brands need to score a minimum of four out of five ('Good'), while smaller brands must score at least three out of five ('It's a start'). This item comes from a brand rated four out of five ('Good') by Good on You. Please note, this is a brand-level rating and does not guarantee that this product is made with conscious materials. Made in the United States

Spinelli Kilcollin X Hoorsenbuhs Sterling Silver Virgo Ring

Sterling silver Polished finish One band Three 18K blackened gold connector charms Hallmarked in the United Kingdom at the London Assay Office Handmade in the United States We've partnered with Good On You — an independent agency that rates how brands perform in relation to their impact on the planet, people and animals, with a multi-criteria rating simplified to a five points scale. In order to be awarded our conscious label, larger brands need to score a minimum of four out of five ('Good'), while smaller brands must score at least three out of five ('It's A Start'). This item comes from a brand rated three out of five ('It's A Start') by Good on You. Please note, this is a brand-level rating and does not guarantee that this product is made with conscious materials.

Sterling silver Polished finish Three bands Four 18K yellow gold connector charms Pavé setting Round brilliant-cut black diamond Hallmarked in the United Kingdom at the London Assay Office Handcrafted in the United States Conscious: We've partnered with Good On You — an ethical agency that rates how sustainably brands perform. This item comes from a brand that performs well in relation to their impact on the planet.

recycled sterling silver polished finish double band three recycled 18K yellow gold annulet charms Hallmarked in the United Kingdom at the London Assay Office. All products are handcrafted. Normal everyday use and external agents may reduce the lustre of gemstones and gold surfaces. To maintain, use specific, non-abrasive products specially meant for cleaning jewellery. This item is made from at least 50% recycled or upcycled materials. We've partnered with Good On You — an independent agency that rates how brands perform in relation to their impact on the planet, people and animals, with a multi-criteria rating simplified to a five points scale. In order to be awarded our conscious label, larger brands need to score a minimum of four out of five ('Good'), while smaller brands must score at least three out of five ('It's a start'). This item comes from a brand rated four out of five ('Good') by Good on You. Please note, this is a brand-level rating and does not guarantee that this product is made with conscious materials. Made in the United States

Spinelli Kilcollin X Hoorsenbuhs Sterling Silver Phantom Ring

Material: 925 sterling silver. Closure: lobster-clasp fastening. Handmade in the USA. Designer color name: Silver.

Spinelli Kilcollin Serpens sterling silver bracelet

Material: 18kt yellow gold. Made in the USA.

Spinelli Kilcollin Micro Hoop Mini 18kt gold single earring

Material: sterling silver. Made in the USA. Closure: lobster-clasp fastening.

Spinelli Kilcollin Helio sterling silver bracelet

Material: 18kt yellow gold, 18kt rose gold, 925 sterling silver. Made in the USA. Stone I: diamonds, round-cut, pavé setting.

Spinelli Kilcollin Libra 18kt gold and sterling silver rings with diamonds

Material: 18kt yellow gold. Made in the USA. Stone I: diamonds, round-cut, bezel setting. Designer color name: Yg.

Spinelli Kilcollin Ovio 18kt gold ring with diamonds

Material: 18kt rose gold, 18kt yellow gold, 925 sterling silver. Made in the USA.

Spinelli Kilcollin Hyacinth 18kt gold and sterling silver ring

Material: 925 sterling silver, 18kt yellow gold. Made in the USA. Stone I: diamonds, round-cut, pavé setting. Designer color name: Mx.

Spinelli Kilcollin Sirius Max sterling silver and 18tk gold ring with black diamonds

Material: 18kt gold-plated sterling silver. Handmade in the USA. Stone I: black diamond, round-cut, bezel setting. Stone I carat weight (ct): 1.43. Closure: clasp fastening.

Spinelli Kilcollin Gravity Estrella 18kt gold-plated sterling silver necklace with diamonds

Material: 925 sterling silver. Handmade in the USA.

Spinelli Kilcollin Medium Fused Serpens sterling silver ring

Material: 18kt white gold. Made in the USA. Stone I carat weight (ct): diamonds.3ctw.

Spinelli Kilcollin Macro Hoop Mini 18kt white gold single earring with diamonds

Material: 925 sterling silver, 18kt yellow gold. Handmade in the USA.

Spinelli Kilcollin Virgo sterling silver and 18kt gold ring

Material: 18kt yellow gold, 925 sterling silver. Made in the USA. Designer color name: Silver.

Spinelli Kilcollin Sirius sterling silver and 18kt gold ring

Material: sterling silver, 18kt yellow gold. Made in the USA. Stone I: diamonds, 1.2ctw, prong setting, round-cut.

Spinelli Kilcollin Virgo Petite 18kt gold and sterling silver ring with diamonds

Material: 18kt yellow gold. Made in the USA. Designer color name: Yellow Gold.

Spinelli Kilcollin Helio Chain 18kt gold bracelet

Material: 18kt yellow gold. Made in the USA. Stone I carat weight (ct): sapphires.

Spinelli Kilcollin Macro Mini 18kt gold single earring with sapphires

Material: 18kt yellow gold, sterling silver, 18kt rose gold. Made in the USA.

Spinelli KilcollinSerpens 18kt gold and sterling silver necklace

Product Info

Spinelli Kilcollin Serpens 18kt gold and sterling silver necklace