(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: круглый, oval, olive, pear, heart, квадрат, random, и т. д.. В целом, jade and jade, и т. д., are commonly curved, especially the oval ring or pendant surface, because it is […]
