Edwardian 3.30 CTW Alexandrite Diamond Platinum Scrolling Three Stone Ring GIA

Centering a cushion cut ruby weighing 1.12 carats - transparent medium purplish red in color Natural Burmese in origin and displaying no indications of heat treatment Prong set and f...

Centering an oval cut amethyst weighing approximately 6.45 carats - transparent medium purple Bezel set in yellow gold with a recessed navette shaped platinum-topped surround Bead se...

Centering an oval cut sapphire weighing 1.20 carats - transparent deep blue. Natural Burmese in origin with no indications of heat treatment. Set with talon prongs with a halo surrou...

Centering an elongated cushion cut sapphire weighing 4.05 carats - transparent light blue in color Natural Sri Lankan in origin with no indications of heat treatment Set with platin...

Ceylon Alexandrite and diamond coronet cluster ring. Set to centre with an oval old cut natural unenhanced Ceylon alexandrite in an open back claw setting with an approximate weight ...

This is a custom one of a kind Platinum and 18K Gold Ring. It is set with a beautiful Cushion Modified Brilliant Cut Natural Alexandrite with a GIA report. It is transparent with a ...

GIA .65ct Alexandrite & Diamond Ring in White Gold Introducing this beautiful color-changing ring crafted in 14kt white gold. The ring features a .65ct natural alexandrite, certifie...

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. Your Alexandrite search is over. The 4.04 carat Alexandrite is one of the most important gems in our collection. It's BGL certified and cushion. It exhibits a brilliant olive green body...