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. 

GIA
AGL
GRS
SSEF
EGL
Gübelin

RINGS معتمدة

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

قلادات معتمدة

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

أقراط معتمدة

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
Save 12%
Vintage Art Deco AGL Cert. 10 Carat Colombian Emerald Pear Drop Platinum Earrings – Assay Jewelers
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أساور معتمدة

3 SHOWN · 8 TOTAL
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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
Save 20%
Vintage EGL Certified 2.01ct Brilliant Cut Diamond Bezel 18K Yellow Gold Bangle – Assay Jewelers
معتمد
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1.39 Carat GIA Certified Fancy Yellow Heart Cut Diamond Double Halo Ring – Assay Jewelers
معتمد
AGL Certified 15.78 Carat No Oil Emerald and Half Moon Cut Diamond Ring – Assay Jewelers
معتمد
GRS Certified 3.16 Carat Vivid Green Minor Oil Colombia Emerald and Diamond 18K Ring | GRS Appendix. – Assay Jewelers
معتمد
GRS Certified 18.16 Carat No Heat Mogok Burma Oval Cut Blue Sapphire and Diamond Ring – Assay Jewelers
معتمد
GIA Certified Oval Cut 9.5 Carat Natural Aquamarine Vintage Retro Ring – Assay Jewelers
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GIA Certified 2.79 Carat Fancy Light Yellow Radiant Cut Diamond 18K Gold Ring – Assay Jewelers
معتمد
GIA Certified Oval Cut 7 Carat Purplish Red Tourmaline Ring with Diamond Sides in 18K Gold – Assay Jewelers
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GIA Certified 46.45 Carat Emerald and Diamond Chandelier Necklace – Assay Jewelers
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GIA Certified 1.64 Carat Princess Cut Diamond In Tiffany Setting 18K White Gold Ring – Assay Jewelers
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GIA Certified 1.5 Carat Marquise Cut E/VS2 Diamond Horizontal Set Mens Pinky Ring – Assay Jewelers
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Vintage Tiffany & Co. Signed GIA Certified Natural Saltwater Pearl Two Strand Necklace – Assay Jewelers
Save 12%
GIA Certified 5.03 Carat J/VVS1 Round Cut Diamond Ring Half Moon Cut Side Stones – Assay Jewelers
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10.82 Carat No Heat Ceylon Blue Sapphire and Diamond Vintage Art Deco Platinum Ring | AGL & GIA Certified – Assay Jewelers
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GIA Certified 2.22 Carat Fancy Yellow-Green Radiant Cut Diamond 3 Stone Ring in 18K White Gold – Assay Jewelers
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Ring من الألماس قلب القطع، 18.95 قيراط، معتمد GIA، نوع II-A، خالٍ من العيوب داخليًا، بثلاثة أحجار – Assay Jewelers
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GIA Certified 50 Carat Fancy Yellow Diamond Necklace in 18K Gold – Assay Jewelers
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Magnificent GIA Certified 25 Carat Total Natural Fancy Yellow Diamond Necklace in 18K Gold – Assay Jewelers
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GIA Certified Fancy Yellow Cushion Cut Diamond with Pink and White Diamond Side Stones in Platinum 950 & 18K White Gold – Assay Jewelers
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AGL Certified 13.49 Carat Minor Oil Colombian Emerald & Diamond Halo Platinum Necklace – Assay Jewelers
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GRS Certified 51 carat Green Oval Cut Peridot with Diamond Halo in 18K Gold Cuban Chain Setting Pendant Necklace – Assay Jewelers
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GIA Certified 2 Carat Fancy Vivid Yellow Radiant Cut Diamond 3-Stone Ring With Half Moon Diamond Side Stones – Assay Jewelers
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GRS Certified 7.25 Carat No Heat Oval Cut Blue Sapphire Ring With Pink Diamond Sides – Assay Jewelers
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AGL Certified 16.68 Carat Cabochon Cut Ceylon Blue Sapphire Ring with Diamond Halo and Filigree Set 18K White Gold – Assay Jewelers
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2.72 Carat GRS Certified Minor Oil Muzo Green Colombian Emerald Necklace in 18k White Gold – Assay Jewelers
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GIA Certified 6.33 Carat Minor Oil Colombian Emerald Necklace in 18K White Gold – Assay Jewelers
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GIA Certified 1.01 Carat Round Cut Fancy Yellow Diamond Ring – Assay Jewelers
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GIA Certified 1.92 carat Brownish Greenish Yellow Marquise Cut Diamond Ring – Assay Jewelers
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GIA Certified 3.28 Carat Fancy Intense Yellow Shield Kite Cut Natural Diamond Pendant Necklace – Assay Jewelers
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GIA Certified 2.30 Carat Fancy Brownish Greenish Yellow Diamond Round Double Halo Ring – Assay Jewelers
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GIA Certified 1.12 carat Radiant Cut Fancy Light Green-Yellow Diamond and Diamond Halo Ring – Assay Jewelers
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GIA Certified 3.48 Carat Radiant Cut Light Pink Diamond Ring in 18K White Gold – Assay Jewelers
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GIA Certified 3.51 Carat Fancy Brownish Yellow Diamond Ring with Pink and White Diamond Halo – Assay Jewelers
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GIA Certified 2.35 Fancy Yellow Diamond Ring With 1.0 CTW Diamond Cluster in 18K White Gold – Assay Jewelers
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AGL Certified 17 Carat Octagonal Cut Minor Oil Colombian Emerald Ring – Assay Jewelers
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GIA Certified 3.32 Carat Fancy Intense Yellow Heart Cut Diamond Engagement Ring – Assay Jewelers
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GRS Certified 2.53 Carat Vivid Green Colombian Minor Oil Emerald & Diamond Bypass Ring – Assay Jewelers
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GIA Certified 6.07 Carat Radiant Cut Fancy Brownish Greenish Yellow Diamond Ring – Assay Jewelers
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GIA Certified Fancy Intense Yellow & Fancy Light Pink Diamond Toi Et Moi Ring in 18K White Gold – Assay Jewelers
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GIA Certified 3.10 Carat No Oil Muzo Colombian Emerald & Old Cut Diamond Ring – Assay Jewelers
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GIA Certified Oval Cut Fancy Orangy Pink & White Diamond Toi Et Moi 18K Ring – Assay Jewelers
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Vintage Art Deco Era GIA Certified Aquamarine and Old Euro Cut Diamond Necklace – Assay Jewelers
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25 Carat GRS Certified No Heat Cabochon Cut Blue Star Sapphire Ring With Trapezoid Cut Diamonds – Assay Jewelers
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GIA Certified 3.7 Carat TW Natural Diamond Latch Back Dangle-Drop Earrings in 18K – Assay Jewelers
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GIA Certified 5.02 Carat Cushion Cut Fancy Brown Yellow Diamond Ring in 18K Rose Gold & Detachable Bands – Assay Jewelers
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GIA Certified 6 Carat Emerald Cut No Heat Burma Blue Sapphire & Diamond Ring – Assay Jewelers
مُعْتَمَد
GIA Certified 7.51 Carat Total Pear Cut Diamond Drop Earrings in 18K White Gold – Assay Jewelers
معتمد
AGL Certified 10 Carat Cabochon Cut Minor Oil Emerald and Diamond Cluster Ring in 18K White Gold – Assay Jewelers
معتمد

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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