time:2022-11-03 source:sznbone Views:
Arcuate type
Also known as convex or plain body, its ornamental surface is a convex. According to the waist shape (the shape of the waist), it can be further divided into round, olive shaped, heart shaped, rectangular, square, cross shaped, cushion shaped, pituitary shaped, etc. According to its section type, it can be divided into five types: single convex, double convex, lentil convex, hollow convex and concave.
Faceted type
It is composed of a series of geometric planes that completely cover the surface of the gem. When polished at an appropriate angle, the gem can display four optical effects, including body color, brightness, fire color and shine. Faceted type can also be divided into diamond type, ladder type, rose type, scissors type (cross type) type and mixed type.
Bead type
It is commonly used for medium and low-grade gemstones, and can be used for different jewelry. It can also be divided into round bead, oval bead, oblate bead, cuboid bead and other types according to the shape.
Heterotype
It includes free type and random type, which can show the ever-changing natural shape of gemstones.