8.30 Carat Oval Blue Sapphire & Trillion Cut 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 ...

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 ...

8.30 Carat Oval Tanzanite and Diamond Ring in Platinum Tanzanite and Diamond Ring features an 8.30 carat Deep Blue-Purple Oval Tanzanite in the center, surrounded by Marquise, Pear,...

8.37 carat Oval Blue Sapphire with eight Oval Diamonds 2.66 carats set in a handmade Platinum ring

7.43 carat Oval Blue Sapphire with ten Old Miner Diamonds 4.10 carats set in a Platinum ring

Absolutely breathtaking sapphire and diamond ring. The brilliant blue stone against the bright white diamonds really catches the viewers eye. Exquisite detail work combined with the incredible, untreated sapphire stone, makes this ring a true treasure. The gorgeous 3.10 carat oval mixed cut sapphire...