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
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Vintage Art Deco AGL Cert. 10 Carat Colombian Emerald Pear Drop Platinum Earrings – Assay Jewelers
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CERTIFIED BRACELETS

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
Certified
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GIA Certified 26 Carat Sapphire Cabochon & Diamond Art Deco Dome 18K Ring – Assay Jewelers
Certified
AGL Certified 10.26 Carat Cushion Cut Pink Sapphire, Ruby, & Diamond Necklace – Assay Jewelers
Certified
GIA Certified 3.3 Carat Fancy Intense Yellow Flawless Round Diamond Ring – Assay Jewelers
Certified
GRS Certified 5.79 Carat Oval Royal Blue Sapphire and Diamond Halo Ring – Assay Jewelers
Certified
GIA Certified 6.47 Carat Green Tourmaline East-West Half Bezel 18K Ring – Assay Jewelers
Certified
GIA Certified 0.46 Carat Fancy Deep Orange Yellow Diamond Engagement Ring – Assay Jewelers
Certified
GIA Certified 3.81 Carat Detachable Two-Piece Toi Et Moi Ring in 18K White Gold – Assay Jewelers
Certified
Certified 5.16 Carat Fei Cui Type A Jadeite Jade and Diamond Cocktail Ring – Assay Jewelers
Certified
GIA Certified 1.46 Carat Colombian Emerald and Diamond Ring in 18K White Gold – Assay Jewelers
Certified
GIA Certified 0.81 Carat G/VS2 Round Cut Diamond Engagement Ring – Assay Jewelers
Certified
GIA Certified 1.39 Carat Radiant Cut Fancy Intense Yellowish Green Diamond Ring – Assay Jewelers
Certified
Vintage AGL Certified 11.28 Carat Colombian Emerald & Old Euro Cut Diamond Ring – Assay Jewelers
Certified
GIA Certified No Heat 3.50 Carat Pink/Purple Star Sapphire and Diamond Dome Ring – Assay Jewelers
Certified
GIA Certified 7.60 Carat No Heat Pink Spinel and Diamond Ring in Platinum – Assay Jewelers
Certified
GIA Certified 2.4 Carat No Heat Pink Sapphire & Briolette Diamond Platinum Ring – Assay Jewelers
Certified
Victorian Era Antique 3.5 Carat Citrine and Diamond GIA Certified in Silver/Gold Ring – Assay Jewelers
Certified
2.09 Carat Oval Cut Burma Ruby No Heat GRS Certified & Diamond Halo Platinum Ring – Assay Jewelers
Certified
GRS Certified 5.09 Carat Oval Burma Ruby & Diamond Halo Cluster Ring – Assay Jewelers
Certified
AGL Certified 9.55 Carat No Heat Burma Pink Sapphire Detachable Ring To Pendant – Assay Jewelers
Certified
GRS Certified 2.99 Oval Cut Burma Ruby & Diamond Halo Ring – Assay Jewelers
Certified
GIA Certified 1.33 Carat Emerald Cut D/VVS2 Diamond East West Band Ring – Assay Jewelers
Certified
AGL Certified 4.07 Carat No Heat Burma Sapphire & Half Moon Diamond Ring – Assay Jewelers
Certified
GIA Certified 4 Carat Colombian Minor Oil Emerald & Diamond Engagement Ring – Assay Jewelers
Certified
GIA Certified Fancy Pink 3.1 CTW Diamond Double Halo Ring – Assay Jewelers
Certified
GIA Certified 2.17 Carat TW Fancy Intense Orange Shield Mixed Cut Diamond Ring – Assay Jewelers
Certified
AGL Certified 1.76 Carat Burma Ruby Pigeon's Blood Red No Heat Classic Burma Ruby Ring – Assay Jewelers
Certified
AGL Certified 8 Carat No Heat Kashmir Sapphire, Burma Ruby, & Diamond Stack Ring – Assay Jewelers
Certified
GIA Certified 3.25 Carat No Heat Color Change Blue Sapphire Ring – Assay Jewelers
Certified
EGL Certified 1.05 Carat Fancy Vivid Yellow Diamond Pear Shape Ring – Assay Jewelers
Certified
GIA Certified 5 Carat D/VS1 Diamond Wedding Eternity Band Ring in 18K White Gold – Assay Jewelers
Certified
GIA Certified 8.46 Carat No Heat Blue Sapphire & Diamond Art Deco Style Ring – Assay Jewelers
Certified
AGL Certified 8.01 Carat No Oil Colombian Emerald Vintage Platinum Ring – Assay Jewelers
Certified
20 Carat Colombian Emerald GRS Certified Vivid Green 18K Earring & Ring Set – Assay Jewelers
Certified
7.60 Carat Colombian Emerald GRS Certified Cushion Cut Diamond Ring – Assay Jewelers
Certified
10 Carat Colombian Emerald GRS Certified Cushion Cut Diamond Earrings – Assay Jewelers
Certified
GRS Certified 8.04 Carat Minor Oil Colombian Emerald & Diamond Halo Ring – Assay Jewelers
Certified
GIA Certified 3 Carat Marquise & Pear Fancy Gray Diamond Drop Pendant Necklace – Assay Jewelers
Certified
GIA Certified 3.40 I/SI2 Pear Cut Diamond Solitaire 18K White Gold Ring – Assay Jewelers
Certified
GIA Certified 10.03 Carat Emerald Cut J/VS1 Diamond Platinum Three Stone Ring – Assay Jewelers
Certified
GRS Certified 2.66 Carat Minor Oil Colombian Emerald and Diamond Pave Ring – Assay Jewelers
Certified
AGL Certified 10.88 Carat Cushion Cut Pink Sapphire & Diamond Halo Ring – Assay Jewelers
Certified
GIA Certified 2.23 Carat Square Cut Blue Sapphire Men's Matte Finish 18K Ring – Assay Jewelers
Certified
EGL Certified 5.02 Carat Pear Diamond Pendant and Diamond Halo & Sapphire Detail – Assay Jewelers
Certified
GRS Certified 108 Carat Carved Pastel Green Emerald Regal Pendant Necklace – Assay Jewelers
Certified
GRS Certified 50.11 Carat Cushion No Heat Sri Lanka Blue Sapphire Ring – Assay Jewelers
Certified
EGL Certified 5.68 Carat Multi Cut White & Yellow Diamond Inverse Dangle Earring – Assay Jewelers
Certified
AGL Certified 5.31 Carat No Oil Emerald & Trillion Diamond 3 Stone Ring – Assay Jewelers
Certified
AGL Certified 13.81 Carat Ceylon No Heat Blue Sapphire Platinum Vintage 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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