(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: ラウンド, 楕円形, olive, pear, heart, 四角, random, 等. 一般的に, jade and jade, 等, are commonly curved, especially the oval ring or pendant surface, because it is […]
