(1) Curved surface type. Cabochon gems are also called plain or convex gemstones. The gemstone has a convex surface. According to the waist shape, it can be divided into: runden, Oval, Olive, pear, Herz, Quadrat, random, usw. Allgemein, jade and jade, usw., are commonly curved, especially the oval ring or pendant surface, because it is […]
