1. Color diamonds are a kind of diamonds. Generally, diamonds are transparent, but color diamonds are diamonds other than transparent. Colored diamonds in the world, also known as color diamonds, are mainly caused by the color produced by the change of particles in colorless diamonds. Different changes produce different colors, so the more rare the color, the higher the value. The common colors of color diamonds are golden yellow, brown and green, while others such as pink, red and blue are rare.
2. Gem refers to the stone or mineral inlay that can meet the requirements of jewelry after polishing and polishing. This precious ore is beautiful in color, high in hardness, and does not change under the action of atmosphere and chemicals. It can be used as instrument bearings, abrasives, decorations, etc. It also refers to precious stones. They are bright in color, crystal clear in texture, bright in luster, hard and durable, and rare in occurrence.