(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: дөңгелек, oval, olive, pear, heart, square, random, т.б. Әдетте, jade and jade, т.б., are commonly curved, especially the oval ring or pendant surface, because it is […]
