16.75 Carat Sugarloaf Tanzanite Diamond Ring in 18 Karat White Gold

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...

A stunning cushion-cut brilliant tanzanite, weighing 7.49 carats, commands attention at the center of this contemporary ring. The tanzanite's vivid blue-purple color is both striking...

Tanzanite 2.88 carats with White Sapphire 1.89 carat Ring set in 18K White Gold Settings Width: 1.5 cm Length: 0.9 cm Ring Size: 52 Total Weight: 6.67 grams "We first opened door...