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

認證 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

認證項鍊

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

認證耳環

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
Save 12%

認證手鍊

3 SHOWN · 8 TOTAL
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GIA Cert. 2.65 Carat Yellow Diamond Center 18K Tennis Bracelet – Assay Jewelers
Save 3%
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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AGL認證 6.79 克拉輕微注油哥倫比亞祖母綠與鑽石 18K 金 Ring – Assay Jewelers
Certified
GIA認證30克拉圓形鑽石圈鏈手鍊,18K白金 – Assay Jewelers
Certified
GIA Certified 3.45 Carat F/VVS2 Emerald Cut Diamond Engagement 3 Stone Ring – Assay Jewelers
Certified
GIA Certified 5.09 Carat D Color VVS2 Clarity Emerald Cut Diamond 18K Ring – Assay Jewelers
Certified
GIA Certified 1.69 Carat Radiant Cut Fancy Brownish Pink Diamond Engagement Ring – Assay Jewelers
Certified
GIA Certified 6.53 Carat Fancy Pink-Brown & White Diamond Ring – Assay Jewelers
Certified
GIA 認證 4.10 克拉 Cushion H/VS1 鑽石旋繞訂婚 Ring – Assay Jewelers
Certified
GIA Certified Brazilian Alexandrite 0.90 Carat Pear Cut Green-Purple in 18K Ring – Assay Jewelers
Certified
GIA Certified 3.12 Carat Cushion Cut No Heat Sapphire & Diamond Ring – Assay Jewelers
Certified
GIA 與 IGI 認證 3 克拉天然彩鑽 Ring 鉑金與 18K 黃金 – Assay Jewelers
alt GIA認證 3 克拉圓形切割雙鑽石垂墜耳環 – Assay Jewelers
Certified
GRS Certified 1.37 Carat Burma Pigeon Blood Ruby & Diamond Ring in 18K Gold – Assay Jewelers
Certified
GIA Certified 1.05 Carat Fancy Yellow Diamond Pendant Necklace – Assay Jewelers
Certified
GIA Certified 10.78 Carat Heart Cut Pink Diamond Cluster Stud Earrings in 18k – Assay Jewelers
Certified
~16 Carat Cabochon Cut Burma Sapphire AGL Certified and Diamond 14K Earrings – Assay Jewelers
Certified
alt 天然 GIA 認證 2.02 克拉濃彩黃鑽心形鉑金項鍊 – Assay Jewelers
Certified
GIA Certified 1.01 Carat Fancy Bluish Gray Diamond Ring – Assay Jewelers
Certified
GIA認證14.68克拉A級翡翠Ring,鑲鑽,18K金 – Assay Jewelers
Certified
GIA認證 1.51 CTTW 華彩淡棕粉鑽內部無瑕 Ring – Assay Jewelers
Certified
GIA Certified 3.22 Carat Marquise Cut G/VS1 Halo Engagement 18K Ring – Assay Jewelers
Certified
GIA認證 1.52 克拉 Fancy 偏綠黃鑽石 水滴切割 雪花 Ring – Assay Jewelers
Certified
AGL Certified 30 Carat No Heat Ceylon Blue Star Sapphire & Diamond Halo Ring – Assay Jewelers
Certified
Victorian Era 3.82 Carat No Heat Sapphire and Diamond GRS Certified Brooch – Assay Jewelers
Certified
GIA認證 8 Carat 白蛋白石搭配橘色石榴石與海藍寶圍鑲 Ring – Assay Jewelers
Certified
8.64 克拉 AGL 認證錫蘭 Cushion 切割藍寶石與鑽石胸針 – Assay Jewelers
Certified
2.5 Carat GIA Certified Cushion-Cut Pink Sapphire and Diamond 18K Pendant – Assay Jewelers
Certified
Vintage GIA Certified 120 Carat Pear-Shape Pink Rubellite Tourmaline Necklace in 22k Yellow Gold – Assay Jewelers
Certified
GRS Certified 5.03 Carat Oval Cut Minor Oil Colombian Emerald Ring with Diamond Halo in 18K White Gold – Assay Jewelers
Certified
12.68 Carat Zoisite Green Tanzanite & Diamond Ring in Platinum 950 | IGI Certified – Assay Jewelers
Save 12%
GRS Certified 41.17 CTTW Sri Lanka No Heat Blue Sapphire Bracelet with Diamond & Ruby in 18K White Gold – Assay Jewelers
Certified
GIA & GRS Certified Natural Muzo Vivid Green Colombian Emerald Pendant Necklace with Diamonds in 18K Gold – Assay Jewelers
Certified
6.34 Carat No Heat Oval Cut Blue Sapphire and Diamond Halo 18K Ring GRS Certified – Assay Jewelers
Certified
Boucheron "Laperouse" 8.03 Carat Emerald Cut G VS1 GIA Certified Diamond Ring – Assay Jewelers
GIA Certified 5.25 Carat Oval Cut Blue Zircon & Diamond Bypass Ring Signed Richard Krementz – Assay Jewelers
Certified
36.40 Carat Ceylon Star Cabochon Sapphire and Diamond GRS Certified 18K Ring – Assay Jewelers
Certified
GIA Certified Hexagon Cut Pink Tourmaline with Diamond Halo Star Shape Ring in 18K White Gold – Assay Jewelers
Certified
GIA Certified 2.5 Carat Oval Cut Tsavorite and Diamond Overpass Crossover Ring | Signed Richard Krementz – Assay Jewelers
GIA Certified Rectangular Cut Blue-Green Indicolite Tourmaline and Diamond 18K Gold Ring – Assay Jewelers
Certified
GIA Certified 2.77 Carat Oval Cut Pink Sapphire Square Shape Ring in Half Bezel and Channel Setting – Assay Jewelers
Certified
AGL Certified 16.46 Carat Minor Oil Vivid Colombian Emerald and Diamond Halo Ring – Assay Jewelers
Certified
GIA Certified 1.24 Carat Radiant Cut Yellow (Y-Z) Diamond Engagement Ring in 18K White Gold – Assay Jewelers
Certified
AGL Certified 7.76 Carat No Heat Burma Oval Blue Sapphire Vintage Edwardian Ring in Platinum – Assay Jewelers
Certified
GRS Certified 13.89 Carat Chrysoberyl Cats Eye Mens 18K Yellow Gold Ring – Assay Jewelers
Certified
AGL Certified No Oil 2.54 Carat Colombian Emerald and Old French Cut Diamond Ring – Assay Jewelers
Certified
GIA Certified 0.51 Carat Round Cut Diamond 18K White Hidden Halo Engagement Ring – Assay Jewelers
Certified
GIA Certified 1.15 Carat Radiant Cut Fancy Intense Yellowish Green Diamond Ring With Pink/White Side Stones – Assay Jewelers
Certified
GRS Certified 6.35 Carat Oval Cut Royal Blue Sapphire with Diamonds in Platinum Ring – Assay Jewelers
Certified
GIA Certified Round Cut Fancy Pink-Purple Diamond Ring with Diamond Halo – 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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