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

3 SHOWN · 282 TOTAL
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EGL Certified 2.15 Carat Princess Cut Diamond in 14K White Gold Engagement Ring – Assay Jewelers
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GIA 1.25 Carat Burma Ruby & Pave Diamond 18K White Gold Ring – Assay Jewelers
GIA Certified 4 Carat Colombian Minor Oil Emerald & Diamond Engagement Ring – Assay Jewelers

CERTIFIED NECKLACES

3 SHOWN · 43 TOTAL
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GIA Certified Type A Fei Cui Jadeite Jade Pierced Carving Yellow Gold Pendant – Assay Jewelers
GRS Certified 17.85 Carat Emerald & Diamond Filigree 14K Yellow Gold Necklace – Assay Jewelers
GRS Certified 4.13 Carat Heart Sapphire Diamond 18K White Gold Pendant Necklace – Assay Jewelers

CERTIFIED EARRINGS

3 SHOWN · 31 TOTAL
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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
Vintage Art Deco AGL Cert. 10 Carat Colombian Emerald Pear Drop Platinum Earrings – Assay Jewelers

CERTIFIED BRACELETS

3 SHOWN · 8 TOTAL
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GIA Cert. 2.65 Carat Yellow Diamond Center 18K Tennis Bracelet – Assay Jewelers
GIA Certified GUMP Signed Lavender Jadeite Jade 14K Gold Link Bracelet – Assay Jewelers
Vintage EGL Certified 2.01ct Brilliant Cut Diamond Bezel 18K Yellow Gold Bangle – Assay Jewelers
Certified
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Vintage AGL Certified No Heat Blue Sapphire and Old Euro Cut Diamond Ring in Platinum – Assay Jewelers
Certified
GIA Certified 3 Carat Total Radiant Cut Diamond Stud Earrings in 18K White Gold – Assay Jewelers
Certified
Vintage GRS Certified 2.47 Carat Royal Blue Sapphire & Diamond Platinum Ring – Assay Jewelers
Certified
GIA Certified Natural 3 Carat TW Fancy Yellow Diamond Radiant Cut Stud Earrings in 18K Gold – Assay Jewelers
Certified
GIA Certified 4 Carat Oval Cut No Oil Emerald and Diamond Halo Cocktail Ring in Platinum Setting – Assay Jewelers
Certified
AGL Certified 15 Carat Round Cut Colombian Emerald and Diamond Halo Ring – Assay Jewelers
Certified
GIA Certified 2.02 Carat Cushion Cut Fancy Greenish Yellow Diamond Ring – Assay Jewelers
Certified
GRS Certified 4.90 Carat Insignificant Oil Colombian Emerald & Trapezoid Cut Diamond 3-Stone Ring – Assay Jewelers
Certified
AGL Certified 28.29 Carat No Heat Purplish Pink Tourmaline & Diamond Ring – Assay Jewelers
Certified
GRS Certified Trilliant Cut Burma Ruby and Diamond Long Oval Shaped Toi Et Moi Ring in 18K White Gold – Assay Jewelers
Certified
GIA Certified Vintage No Heat 17 Carat Cushion Yellow Sapphire & Diamond Halo Floral Filigree Cocktail Ring – Assay Jewelers
Certified
Vintage AGL Certified 6.80 Carat No Heat Blue Sapphire and Diamond Platinum Ring – Assay Jewelers
Certified
GIA Certified Radiant Cut Fancy Dark Brown Pink Diamond and Diamond Halo Wide Frame Ring in 18K White Gold – Assay Jewelers
Certified
GIA Certified Oval Cut 2.14 Carat & 18K White Gold Wide Lab Grown Engagement Ring – Assay Jewelers
Certified
GIA Certified No Heat Star Ruby in Vintage Platinum and Diamond Ring Signed Dreicer & Co. – Assay Jewelers
GIA Certified Minor Oil Zambian Emerald & Trillion Diamond 3-Stone Ring in 18K – Assay Jewelers
Certified
GIA Certified Oval Blue Sapphire and Trillion Diamond 3 Stone Ring in 18K – Assay Jewelers
Certified
GIA Certified 13 Carat Colombian Emerald Men's Ring in 18K Gold With Princess Cut Diamonds – Assay Jewelers
Certified
GIA Certified No Heat Blue Sapphire & Trillion Cut Diamond 3-Stone Engagement Ring – Assay Jewelers
Certified
Certified 18K Gold Lavender Jade and Round Diamond Halo Ring – Assay Jewelers
Certified
IGI Certified 3.45 Carat Round Cut Diamond in Platinum Setting – Assay Jewelers
GIA Certified Pink Sapphire and Diamond Vintage 18K Gold Vertical Ring – Assay Jewelers
Certified
GIA Certified 25 Carat Cabochon Blue Sapphire & Diamond Halo Ring in Platinum – Assay Jewelers
Certified
GIA Certified No Heat Blue Sapphire 18k Gold Cable Chain Choker Necklace 15.5" – Assay Jewelers
Certified
Vintage GIA Certified 11.16 Carat Oval Orange Sapphire in 14K Rose Gold – Assay Jewelers
Certified
Art Deco AGL Certified No Heat 5.52 Carat Oval Cut Burma Ruby and Round Diamond Halo Ring – Assay Jewelers
Certified
7 Carat Fancy Intense Yellow Radiant Cut Diamond and Diamond Halo Ring | GIA Certified – Assay Jewelers
Certified
10.88 Carat Radiant Cut Fancy Yellow Diamond | GIA Certified – Assay Jewelers
Certified
Julius Cohen Signed AGL Certified 5.40 carat Emerald Minor Oil 18k Gold Ring – Assay Jewelers
GIA Certified Antique Cartier Salt Water Pearl Necklace with Original Box – Assay Jewelers
GIA Certified 4.09-carat White Opal and Diamond Halo in Platinum and Gold Ring – Assay Jewelers
Certified
GIA Certified 4.48 Carat Pear Shape, H/SI2, Diamond Ring – Assay Jewelers
Certified
GIA Certified 1.27 carat Emerald Cut Diamond Engagement Ring – Assay Jewelers
Certified
0.92 carat GIA certified Emerald Cut Diamond Engagement ring with Blue Sapphires – Assay Jewelers
Certified
GRS Certified 6.78 carat Colombian Emerald and Baguette Cut Diamond Ring – Assay Jewelers
Certified
GRS Certified 2.09 Carat Natural Emerald Set in 18k Solid Gold Ring – Assay Jewelers
Certified
GIA Certified 2.38 Carat Marquis-Cut, H Color, Si1 Clarity Diamond set in 18k white gold and diamond halo ring – Assay Jewelers
Certified
1 carat GIA certified Fancy Yellow Lozenge-cut Diamond Ring – Assay Jewelers
Certified
GRS Certified Chrysoberyl Cats Eye Mens Ring 14k White Gold Setting – Assay Jewelers
Certified
GIA certified Blue and Pink Sapphire Unisex Bezel Ring in 18k gold – Assay Jewelers
Certified
AGL Certified 7.36 Carat No Oil Cushion-Cut Colombian Emerald & Half Moon Cut Diamonds Ring – Assay Jewelers
Certified

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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