Alexandrite Diamond Platinum Ring

Featuring an extra fine purple sapphire, this sleek platinum ring is one of our favorites! The gem sapphire weighs 2.18 carats and has a bright vivid p...

A chic ring featuring a gem 3.42 carat spinel with a unique pinkish-violet color. Due to spinel’s high refractive index, the stone bright with excellent brilliance and scintillation....

A 10.50 carat tourmaline with a lively lime-green color takes center stage. It is accented by 0.50 carats of round and baguette-cut diamonds set around the tourmaline in a stylish pa...

A large and impressive spinel weighing 3.84 carats! It is a light pleasing violetish-blue color and is free from any eye visible inclusions. It is accented by 1.10 carats of round br...

A beautiful and large 9.27 carat Natural and Genuine Alexandrite accented with two bullet-shaped diamonds, weighing approximately 0.70 carats total...

Mystical Alexandrite Peek-a-boo Diamond Ring Embrace the enchantment of this timeless piece adorned with a mesmerizing array of diamonds. With a total carat weight of .65ctw, these ...

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 ...

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...