Unique ring with abalone shell and tanzanites in 925 Sterling silver, size 18

Handmade, black rhodium-plated, unique ring made of 925 Sterling silver with an oval, non-calibrated cabochon, made of abalone shell and three tanzanites measuring approximately 3.5 mm each. The prongs and the settings of the tanzanites, as well as some accents of the setting, are gold-plated. The ring is approx. 26 mm high, the ring head measures approx. 27 mm in length and approx. 23 mm in width, the weight of the piece of jewellery is approx. 14 grams. With an inner dimension of around 18 mm, the ring corresponds to German size 58, the hallmark is located on the inside of the ring band.