3.63 Carat Cushion Cut Blue Sapphire and Diamond Ring in Platinum

This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry house with nearly 50 years of history serving elite collectors, retailers, and dealers across the country. As the founder shifts focus to new ventures, he’s releasing a final selection of investment-grade gemstone and diamond pieces—offered exclusively to 1stDibs buyers at exceptional, below-market prices. This is not a liquidation or sale—it’s a one-time opportunity to acquire legacy-level jewelry at true insider value. Each piece is final; once sold, it will not be restocked. This is a cocktail ring that showcases a 1.38 carat cushion cut tanzanite. It has diamonds around the gemstone totaling .57 carats. Designed in brightly polished platinum, this gorgeous ring...

This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry house with nearly 50 years of history serving elite collectors, retailers, and dealers ...

This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry house with nearly 50 years of history serving elite collectors, retailers, and dealers ...

This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry house with nearly 50 years of history serving elite collectors, retailers, and dealers ...

This ring is custom designed to prominently show the beauty of this magnificent gemstone. The vast majority of sapphires on the market are treated with heat to enhance their color. T...

A simply gorgeous Estate ring set in solid Platinum and featuring a *stunning* Unheated Blue Sapphire from Sri Lanka weighing an absolutely impressive 6.00ct. The beautifully made Es...

Indulge in the nostalgia and elegance of the 1990s with this exceptional vintage design swirl ring. Expertly crafted in 18K white gold, this ring showcases a stunning 2.78 carat vivi...

Blue sapphire and diamond Engagement ring beautifully handcrafted in platinum. The details are as follows: Blue sapphire weight : 3.28 carats Diamond weight : 1.06 carat ( GH colo...