1.25 Carat Old Cut Diamond and Ruby Oval Platinum Ring

The central collet set old cut diamond weighing approx. 2.5 cts to a calibre-cut ruby surround, plain hoop, mounted in white gold. Weight: 5.7 gr Finger size: 7

The three oval ruby set in vertical formation, within a rose-cut diamond border, mounted in silver and gold Size : 8 Weight : 7.2gr.

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. A bright and brilliant vintage round brilliant cut diamond, weighing one-and-a-quarter-carats, fills a vibrant royal blue frame of calibre-cut sapphires and burgundy red rubies in this classic Art Deco style 'jigsaw' or 'halo' ring, hand-fabricated in white gold in faithful emulation of 1920s-30s Art Deco style. Strikingly sparkling and stunning. The diamond is original to the period. The crown measures just shy of 1/2 inch, the tapered ring shank...

Ring in 14k white gold structure, mounted with extraordinary 4.37ct of high quality diamonds and 0.82ct of intense rubies. This particular ring has been created in Italy, totally han...