Platinum 6.58 Carat Sri Lankan Cornflower Blue Ceylon Sapphire and Diamond Ring

This ring is in 14K white gold. It features 1 oval-cut blue sapphire weighing 1.60. It also features 28 round cut diamonds weighing 1.14 carats. With a color grade (H) and clarity gr...

This ring is made in 18K white gold and features 1 cushion cut blue sapphire weighing 2.44 carats. Also, the ring features 64 round cut diamonds weighing 0.91 carat. With a color gra...

This ring is made in 14K white gold. It features 1 oval cut blue sapphire weighing 1.55 carats and 22 round cut diamonds weighing 0.51 carat. With a color grade (H) and clarity grade...

This ring is in 18K white gold. It features 1 oval-cut blue sapphire weighing 3.03. The stone is GIA certified with GIA 6183650942. It also features 14 round cut diamonds weighing 0....

This vibrant 3.10ct round cut natural "cornflower color" blue sapphire (GIA 2205722478 - Standard Heat Only) is accompanied with 0.58ct total weight pave-set natural round diamonds 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. This magnificent 6.16 carat weight cornflower blue sapphire fashion ring is a breathtaking and bold choice for any occasion. The sapphire is a stunning shade of blue and boasts exceptional clarity and brilliance, weighing in at 6.16 carats. It is set in luxurious 14K white gold and is surrounded by a halo of 90 round diamonds...

Raised Cushioned Princess & Grill Patina GIA Certified 4.52ct. Natural Blue Sapphire ring GIA Certified Report ID: 5161111589 11.16 X 5.69 X 5.07mm Full cut cushion brilliant C...

This one-of-a-kind ring features a natural, cushion-cut cornflower blue sapphire gemstone with a diamond halo in an 18K white gold setting. It weighs 6.3 grams and measures 17.5mmx13...