(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: γύρω, ωοειδής, olive, pear, heart, πλατεία, random, και τα λοιπά. Γενικά, jade and jade, και τα λοιπά., are commonly curved, especially the oval ring or pendant surface, because it is […]
