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

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
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GIA Certified Vintage Coral and 14K Gold Filigree Bead Necklace Drop Pendant – Assay Jewelers
GIA Certified 5.36 Carat Emerald Cut Diamond East West Bezel Unisex Ring – Assay Jewelers
Certified Jadeite Jade A Platinum Stud Earrings – Assay Jewelers
GIA Certified 11 Carat Bubble Gum Pink Sapphire Bezel Set Solitaire Ring – Assay Jewelers
GIA Certified 10.52 Carat Fancy Light Yellow Diamond 18K Gold Bezel Stud Earring – Assay Jewelers
GIA Certified 3.86 Carat Yellow Diamond East West Ring 18K Gold – Assay Jewelers
Art Deco 4.05 Carat Ruby and Old Euro Diamond Halo Platinum Ring - AGL Certified – Assay Jewelers
AGL Certified 5.75 Carat Burma No Heat Cushion Blue Sapphire and Diamond Ring – Assay Jewelers
GIA Certified Brazilian Paraiba Tourmaline Cluster Ring – Assay Jewelers
GIA Certified 4.58 Carat Emerald Cut Indicolite Tourmaline Diamond Platinum Ring – Assay Jewelers
GIA Certified 1.10 Carat Fancy Light Pink Diamond Three Stone Ring – Assay Jewelers
AGL Certified 4.2 Carat Colombian Emerald 18K Gold Octagon Bezel Ring – Assay Jewelers
GIA Certified 6.76 Carat Pear Cut Diamond Stud Earrings – Assay Jewelers
Certified 11.69 Carat Colombian Emerald & Yellow Diamond Drop Earrings – Assay Jewelers
Certified 9.47 Carat Burma Ruby & Diamond Milgrain Chandelier Drop Earrings – Assay Jewelers
GIA Certified 6.82 Carat Pear Cut No Heat Blue Sapphire Drop Pendant Necklace – Assay Jewelers
GIA Certified 176 Carat Oval Morganite East West Bezel Pendant Necklace – Assay Jewelers
GIA Certified 3.38 Carat Colombian Emerald & Diamond Filigree Three Stone Ring – Assay Jewelers
GIA Certified 5.35 Carat Cushion Cut Burma Sapphire Vintage Ring – Assay Jewelers
GIA Certified 6.6 Carat Fancy Yellow Diamond 18K Gold Split Shank Ring – Assay Jewelers
AGL Certified No Heat Ceylon Pink Sapphire and Diamond Platinum Floral Brooch – Assay Jewelers
GIA Certified GUMP Signed Lavender Jadeite Jade 14K Gold Link Bracelet – Assay Jewelers
CGL Certified 4.12 Carat I/VS1 Diamond 14K White Gold Solitaire Engagement Ring – Assay Jewelers
GIA Certified Pink Natural Saltwater Conch Pearl & Diamond Platinum Brooch – Assay Jewelers
GIA Certified Cushion Cut Blue Topaz in 18K Gold Bezel Pendant Necklace – Assay Jewelers
Edwardian GIA Certified Saltwater Pearl & Old Euro Cut Diamond Necklace – Assay Jewelers
GIA Certified 10.40 Carat Red Zircon & Diamond Ballerina Cocktail Ring – Assay Jewelers
Vintage GIA Certified Lapis Lazuli 18K Gold Bead Necklace – Assay Jewelers
GIA Certified 4.3 Carat Colombian Emerald 18K Gold Button Sunburst Ring – Assay Jewelers
GIA Certified Gumps San Francisco Type A Lavender Jadeite Bead Necklace – Assay Jewelers
6.19 Carat No Oil Colombian Emerald Ring AGL Certified – Assay Jewelers
AGL Certified 3.98 Carat Colombian Emerald 18K Gold Platinum Mens Ring – Assay Jewelers
GIA Certified 2.91 Carat Colombian Emerald & Diamond Platinum Ring – Assay Jewelers
GIA Certified 2.31 Carat Pink Sapphire Oval & Diamond 3-Stone Ring – Assay Jewelers
GRS Certified 2.06 Carat Vivid Deep Blue Sapphire & Diamond Ring – Assay Jewelers
GRS Certified 4.93 Carat Emerald & Diamond 18K Gold Floral Cluster Cocktail Ring – Assay Jewelers
GIA Certified Fancy Brownish Greenish Yellow Diamond Stud Earrings & Ring Set – Assay Jewelers
GIA Certified Fancy Vivid Yellow Diamond Drop Earrings – Assay Jewelers
GIA Certified 7.6 Carat Color Change Star Sapphire & Diamond 14K Gold Men's Ring – Assay Jewelers
GRS Certified 7.15 Carat Vivid Blue Sapphire & Diamond 18K Ring – Assay Jewelers
54.31 Carat No Heat Burma Star Blue Sapphire and Diamond Ring AGL Certified – Assay Jewelers
GIA Certified 5.12 Carat Fancy Brownish Greenish Yellow Diamond Stud Earrings – Assay Jewelers
GIA Certified 8.39 Carat Fancy Intense Yellow Diamond 18K White Gold Halo Ring – Assay Jewelers
GIA Certified 5.03 Carat Fancy Yellow Heart-Shaped Diamond & Halo 18K Gold Ring – Assay Jewelers
GIA Certified 5.69 Carat Fancy Light Brown-Yellow Marquise Diamond Ring – Assay Jewelers
GIA Certified 6 Carat Fancy Light Yellow-Brown Diamond 18K White Gold Ring – Assay Jewelers
GIA Certified 18.61 Carat Pink Tourmaline & Floral Diamond Pendant Necklace – Assay Jewelers
GIA Certified 3 Carat No Heat Red Spinel & Diamond Cocktail Platinum 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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