宝石款式（Gem style）.docVIP

宝石款式（Gem style） Gem style refers to the gem shape, it is rough gem after thinking of style, also known as cut or cut (type). In gem stone, the common gem cutting patterns can be divided into four categories: convex, faceted, bead and special-shaped. 1. convex type The convex type called arc type or size (commonly known as the round). The utility model is characterized in that the ornamental face is a convex surface (cambered surface). According to the waist shape of the convex gem (the external shape of the waist), the convex shape can be further divided into round, oval, olive, heart, rectangle, square, pad, cross, pituitary and so on. According to the shape of the convex stone, the convex shape can be divided into the following five types: (1) a single convex cut, cut top, cambered surface at the top and flat at the bottom; (2) the shape of the convex shape of the lentil is the same as the curvature of the upper and lower convex, and the height is relatively low, showing a lentil shape. Sometimes the opal stone cut; (3) double convex cut, similar to the shape of the convex cut of the lentil bean, but the upper convex is higher than the lower convex. Stars, precious stones, cats eye stones, moonstone, more with this cut type; (4) hollow convex cut, this cut is in the single convex shape on the basis of, from the bottom to dig a concave hollow. This cut is usually used for stones with low color depth and low transparency. After digging holes, the top is thinned to increase transparency and the color becomes brighter. Jade is often used in the second cut; (5) the concave cut cut is often used in combination with gem, the basic shape of single convex cut, just at the top of convex and concave down to dig a, the purpose is to a rather precious stone in the concave and bordered, such as star sapphire or opal. 2. faceted The faceted type called edge type and facets, the basic characteristics of gem by many small surface arranged according to certain rules of composition,