The mineral name of the sapphire window is corundum, which belongs to the corundum. In fact, the gem grade corundum in nature is called Ruby except for red. The rest of the other colors, such as blue, light blue, green, yellow, gray and colorless, are all called sapphires.

The mineral name of sapphire is corundum, which belongs to the corundum. In fact, the gem grade corundum in nature is called Ruby except for red. The rest of the other colors, such as blue, light blue, green, yellow, gray and colorless, are all called sapphires. The chemical composition of sapphire (AL2O3) is mainly composed of Fe, Ti, and color. Sapphire belongs to the three party crystal system and has a six square structure, as shown in the figure.

Lattice constants: a=b=4.758A, c=12.991A index: 0.008~0.010 1.762-1.770 birefringent optical negative uniaxial crystal [2], with two axis light gloss abnormal individual cases: bright glass luster and sub adamantine luster polychroism: colored sapphire has two colors, generally, dark blue / blue, blue / light blue blue, green, blue gray, yellow sapphire with golden yellow / orange / yellow, light yellow, light yellow or colorless, etc.. There are not many sapphire products in the world, mainly Burma, Sri Lanka, Thailand, Australia, Denmark, China, etc., but for gem quality, Burma and Sri Lanka are of the best quality. Thailand

Sapphire and ruby

Sapphire and ruby are sister stones each other. They are all corundum minerals, a Sapphire Pendant on earth other than diamonds.

The most hard natural mineral and the basic chemical composition are alumina. In addition to the starlight effect, only translucent or transparent and brightly colored corundum can be called a gem. Red and chrome containing corundum is red, so it is called ruby, and blue sapphire (Sapphire) is because sapphire contains trace amounts of titanium and iron. In fact, in addition to the red corundum, all other hue corundum is commercially known as Sapphire. So, sapphire (Sapphire) not only refers to the blue corundum, except it has a complete series of blue, and like the fireworks like the sunset yellow, pink, orange and purple and so on, the color line sapphire (Sapphire) is referred to as color sapphire (Sapphire).