GIA Color Change 8 Carat Alexandrite and White Diamond Baguette Ring in Platinum

Gorgeous 10.80 ct. color change alexandrite cushion with 0.25 ct. good quality white diamond princess cuts. Handmade in 18k yellow gold. Ring siz...

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

Beautiful 3.97 ct. purple spinel cushion with 0.30 ct. good quality, white, and bright diamond baguettes. Handmade in platinum. Ring size 6.25.

Gorgeous 5.20 ct. unheated greenish blue sapphire round and 1.00 ct. good quality white diamond round pave. Handmade in platinum. The depth of color and size in round shape is so s...

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...

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 .91ct Alexandrite & Diamond Ring in Platinum Introducing this beautiful ring crafted in 950pt platinum and featuring 1.04ctw diamonds. The sparkly diamonds are SI clarity and ne...

Simply Beautiful! Elegant and finely detailed Double Halo Platinum Ring. Centering a securely nestled Hand set, 1.54 Carat Cushion Alexandrite. Yellowish Green changing to Brownish Y...