Purple Spinel Cushion and White Diamond Baguette Three Stone Ring in Platinum

Beautiful 2.24 ct. unheated purple spinel oval with 0.10 ct. good quality white diamond baguettes. Handmade in platinum. Ring size 5.5.

Gorgeous 8.03 ct. color change alexandrite with good quality, white, and bright diamond baguettes. The alexandrite goes from brownish green to yellow brown. Handmade 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 white gold, double prong set, 4.45 carat cushion cut purple spinel. The gem source is Sri Lanka; its transparency and luster are excellent. It has diamonds on the band and around the gemstone totaling 0.61 carats. Designed in brightly polished 14 K gold, this gorgeous ring...

3.72 carat Cushion Purple Sapphire with two Cushion Diamonds .97 carats set in a handmade Platinum ring