Art Nouveau Onyx Signet Ring in 10k White Gold

This simple Art Nouveau–era (possibly Arts & Crafts) onyx signet ring has a clean, sculptural presence with incredible finger coverage. The flat oval onyx is set in a white gold full bezel and framed by a second white gold border in a smooth, high-polish finish, giving the ring bold contrast and a strong graphic look. Tapered dome shoulders flow gently into the bezel, keeping the overall design minimal yet undeniably elegant and wearable every day.

Materials: 10k white gold 
Inscription:  10K PSCO-P
Stone: 16.0 x 8 mm Black Onyx (stone has very light, difficult to see surface scratches, rhodium plating on mounting has worn off in some areas)
Dimensions: 18.3 x 10.6 mm / 3 - 1.5 mm wide shank / 4.6 mm high off finger
Weight: 2.4 grams
Ring Size: US 6.5 (shows as 6.25 on mandrel but fits like a 6.5)
Period: circa 1910