The name diamond derives from the Latin meaning adiamenten unbeatable. The quality of the diamonds is different: one part use for jewelry purposes, and other technical. Diamonds were discovered in space in the composition of a meteorite.
Diamond has a simple chemical composition – C (crystallized carbon).There are characteristic diamond shine, driven by performance  hardness and exceptional play of color associated with decomposition of light. Refraction of light depends also on the quality of polishing of diamonds.The color of diamonds jewelry is different – different shades colorless sky blue, yellow, green, pink, red, brown and others. The diamond jewelry color is determined , defective centers in the crystal lattice-tion, the action of natural radioactive radiation, etc..