Antique, white-gold goldsmith's ring with beautiful diamond/brilliant-cut diamond setting, approx. 1ct, Art Deco

Approx. Ø16.5mm, ring size 51, approx. 5.8g, 14K white gold, elaborately worked ring head approx. 18 x 17mm, central a beautiful brilliant-cut diamond of approx. Ø5.5mm, approx. 0.61ct, upper quality range, surrounded by further 8-cut brilliant-cut diamonds, estimated brilliant-cut diamond weight 1ct, millegrain decorations, beautiful and handmade ring from the Art Deco period.