Antique 18K Gold and Platinum 1.10 Carat Old Mine Cushion Diamond Solitaire Ring

A beautifully preserved antique solitaire, this late 19th-century ring centers around a romantic old mine cut diamond, its softly rounded cushion shape reflecting the charm and craftsmanship of the era. Set in an elegant combination of rich yellow gold and platinum, the diamond is held securely in an eight-claw prong basket—an iconic detail of the time that enhances both brilliance and presence. The finely ribbed gold shank adds a layer of subtle texture and refinement, making this piece a timeless expression of antique sophistication and enduring beauty.

Details:

Circa 1890

Old mine cut cushion diamond measuring approximately 6.4 x 6 mm

Estimated K color, VS clarity

Eight-claw prong platinum basket setting

Yellow gold shank, tested 17.49K

Intricate ribbed band design

Ring size 7

Total weight: 3.4 grams

Purchased in Europe