Certified Gemstone Jewelry 

CERTIFIED COLLECTION Every Stone. Every Certificate

Every piece in this collection features a center stone or multiple stones independently certified by one of the world's leading gemological laboratories. GIA, GRS, Gübelin, SSEF, AGL, or equivalent. No exceptions. 

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AGL
GRS
SSEF
EGL
Gübelin

CERTIFIED RINGS

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EGL Certified 2.15 Carat Princess Cut Diamond in 14K White Gold Engagement Ring – Assay Jewelers
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Schlumberger For Tiffany & Co. No Heat 6 Carat Ruby and Diamond Ring – Assay Jewelers
GIA Cert. 3.93 Carat No Heat Ruby & Diamond Vintage Cocktail Ring – Assay Jewelers
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CERTIFIED NECKLACES

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GIA Certified Type A Fei Cui Jadeite Jade Pierced Carving Yellow Gold Pendant – Assay Jewelers
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GRS Certified 17.85 Carat Emerald & Diamond Filigree 14K Yellow Gold Necklace – Assay Jewelers
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GRS Certified 4.13 Carat Heart Sapphire Diamond 18K White Gold Pendant Necklace – Assay Jewelers
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CERTIFIED EARRINGS

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Gump's San Francisco Lavender Jade Link Bracelet and Earring Set – Assay Jewelers
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18K Gold Natural Colombian Emerald and Diamond Detachable Drop Earrings – Assay Jewelers
Mouawad Signed Vivid Cabochon Emeralds & Baguette Diamond Halo Clip On Earrings – Assay Jewelers
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CERTIFIED BRACELETS

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GIA Cert. 2.65 Carat Yellow Diamond Center 18K Tennis Bracelet – Assay Jewelers
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GIA Certified GUMP Signed Lavender Jadeite Jade 14K Gold Link Bracelet – Assay Jewelers
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Vintage EGL Certified 2.01ct Brilliant Cut Diamond Bezel 18K Yellow Gold Bangle – Assay Jewelers
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GIA Cert. 2.65 Carat Yellow Diamond Center 18K Tennis Bracelet – Assay Jewelers
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Schlumberger For Tiffany & Co. No Heat 6 Carat Ruby and Diamond Ring – Assay Jewelers
GIA Cert. 3.93 Carat No Heat Ruby & Diamond Vintage Cocktail Ring – Assay Jewelers
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3.04 Carat Star No-Heat Burma Ruby & Sunburst Art Deco Ring – Assay Jewelers
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8.76 Carat Burma No Heat Star Ruby and Diamond Platinum Ring – Assay Jewelers
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Vintage GIA Cert. 2.3 Carat No Heat Burma Ruby & Diamond in Platinum Ring – Assay Jewelers
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Art Deco No Heat Burma Ruby and Diamond Brooch – Assay Jewelers
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Art Deco No Heat Burma Ruby and Diamond Brooch
$50,350.00 USD $57,501.00 USD
6.94 Carat Emerald Cut Ruby & Diamond 18K Black Bezel Gold Ring – Assay Jewelers
2.19 Carat No Heat Burma Ruby & Trapezoid Diamond 3 Stone Ring – Assay Jewelers
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Vintage 45 Carat No Heat Ruby, Diamond, and Pearl Cuff Choker Necklace – Assay Jewelers
155.48 Carat No-Heat Purple Star Ruby 18K Gold Bezel Pendant Necklace – Assay Jewelers
7.23 Carat No Heat Burma Star Ruby & Baguette Diamond Ballerina Ring in 18K Gold – Assay Jewelers
6.45 Carat No-Heat Burma Ruby Oval Cut & Round Diamond Halo Ring – Assay Jewelers
11 Carat Oval Cut Burma Pink Ruby & Diamond Cluster Dome Ring – Assay Jewelers
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7.25 Carat No Heat Cushion Cut Ruby & Diamond Halo Platinum 18K Gold Ring – Assay Jewelers
5.10 Carat No Heat Ceylon Pink Sapphire East West Floating Necklace – Assay Jewelers
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GRS Cert. 13.86 Carat No Heat Ruby Eiseman Signed Vintage Ring – Assay Jewelers
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Antique Victorian Ruby, Pearl, Diamond Gold/Silver Brooch – Assay Jewelers
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J.E. Caldwell & Co. 2.52 Carat No Heat Thai Ruby & Diamond Platinum Ring – Assay Jewelers
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Vintage Estate 6.01 Carat No Heat Star Ruby & Diamond Platinum Ring – Assay Jewelers
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Rare Vivid Red 5.81 Carat Oval Cut Siam Ruby & Diamond Halo Ring – Assay Jewelers
GIA Cert. 9.72 Carat No Heat Star Ruby & Diamond Platinum Cocktail Ring – Assay Jewelers
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Van Cleef & Arpels 8.85 Carat No Heat Oval Ruby in 18k Yellow Gold Ring – Assay Jewelers
GIA 8.89 Carat Oval Pyrope Almandine Garnet Six Prong 18K Yellow Gold Solitaire – Assay Jewelers
GIA Cert. 8.56 Carat Cushion Light Blue Sapphire 14K Gold Vintage Mens Ring – Assay Jewelers
Art Deco Old European Cut Vintage Engagement Ring 1.69ct G/VVS1 GIA – Assay Jewelers
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GIA Certified 3.25 Carat Oval Cut Natural Blue Sapphire & Platinum 3 Stone Ring – Assay Jewelers
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GIA Cert. 5.10 Carat Untreated Black Opal Diamond Halo Platinum Starburst Ring – Assay Jewelers
GIA Cert. 1.85 Carat Oval Blue Sapphire & Diamond 14K White Gold 3 Stone Ring – Assay Jewelers
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Gump's San Francisco Lavender Jade Link Bracelet and Earring Set – Assay Jewelers
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GIA 1.25CT Pear Cut Fancy Green Yellow Diamond 18K Tri-Colored Gold Bypass Ring – Assay Jewelers
Vintage No Heat 7 Carat Purplish Pink Star Sapphire Platinum Art Deco Ring – Assay Jewelers
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GIA Cert. 5.01 Carat Old Euro Cut Diamond Edwardian Antique Platinum Ring – Assay Jewelers
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GIA Certified 7.03 Carat Pear Cut F/SI2 Diamond Platinum 3 Stone Ring – Assay Jewelers
GIA 4.02 Carat Oval Cut Diamond E/VS2 Three Stone Half Moon Sidestone Ring – Assay Jewelers
GIA 6.16 Carat Emerald Cut Diamond and Trapezoid Three Stone Engagement Ring – Assay Jewelers
GIA Cert. 10.20 Carat Radiant Fancy Intense Yellow & Half Moon Cut Diamond Ring – Assay Jewelers
GIA Certified 1.07 Carat Square-Cut Emerald & Diamond 3 Stone Platinum Ring – Assay Jewelers
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2.0 Carat Long Radiant D/VS2 Diamond Hidden Halo Pave Engagement Ring – Assay Jewelers
GIA Certified Semi Mount Ring With Round Diamond Halo in Platinum – Assay Jewelers
GIA Cert. 7.40 Carat Purplish Red Star Ruby & Diamond Art Deco Ballerina Ring – Assay Jewelers
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GIA Certified 10 Carat No Heat Pink Star Sapphire White Gold Cocktail Ring – Assay Jewelers
Cartier Paris Art Deco Royal Blue 2.3 Carat No Heat Sapphire and Diamond Ring – Assay Jewelers
GRS Certified 1.03 Carat No Heat Ruby Diamond Art Deco Platinum Ring Vintage Era – Assay Jewelers
GIA Certified 1.56 Carat Long Emerald Cut Diamond Vintage Art Deco Platinum Ring – Assay Jewelers
GIA Certified 20.61 Carat Orange Opal 18K Gold Diamond Pendant Necklace – Assay Jewelers
GIA 4.02 Ct Colombian Emerald Solitaire Floating 18K Gold Pendant Necklace – Assay Jewelers
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GIA Cert. 8.5 Carat Morganite & Diamond 18k Rose Gold Cocktail Jacket Ring – Assay Jewelers

We carry certified diamonds, rubies sapphires, and emeralds, alongside rare fancy color diamonds and collector-grade colored stones. Every piece comes set in fine gold or platinum.

Browse by category — certified rings, necklaces, earrings, and bracelets — or use the filters above to narrow by gemstone, price, or style. If you're new to gemstone grading, our Collector's Corner blog covers what certifications mean and what to look for in a lab report.

For significant purchases, we share the full certificate before you commit. Contact us with the piece you're interested in and we'll send it directly.

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