Spinel is a historical gemstone species, its name comes from two sources: one is said to come from the Greek word "spark", describing its reddish fire-like color; the other is said to come from the Latin Spina, Spinells, that is, the tip of the thorns, because of its crystalline shape of cubic crystals, there is a sharp corner, so it is named after this. So this name.
Spinel is a mineral composed of magnesium-aluminum oxides, and because it contains magnesium, iron, zinc, manganese, and other elements, different spinels can have different colors.
❤️ [spinel]
Category：Magnesium aluminum oxide composition of the mineral
Luster: glassy to adamantine
Crystal system: isometric crystal system
Transparency: transparent to opaque
Disintegration: incomplete
Fracture: shell-like fracture
Hardness: 8
Specific gravity: 3.60, Zn-containing varieties up to 4.60
Special properties: starlight effect is rare, color change effect
Refractive index: 1.718 (+0.017, -0.008)
Optical character: homogeneous body
[Color].
The colors of spinel include red, orange-red, pink, purple-red, colorless, yellow, orange-yellow, brown, blue, green and purple.
[Origin].
The main origins of spinel are Matcha, Myanmar, Sri Lanka, Kenya, Nigeria, Tanzania, and Takkistan, Vietnam, the United States and Afghanistan.
[Buying and Selling Spinel
①Color
The common colors of spinel are colorless, pink, orange, red, blue, purple and black. The color is best in deep red, followed by purplish red, orange red, light red and blue, and the color is required to be pure and vivid.
In the purchase of observation and will be the same color spinel or a variety of colors row placed together to compare the brightness and saturation, the brighter the brightness, the higher the saturation of the spinel value is higher.
②Clarity
Spinel internal, there are often mineral inclusions appear, mainly some small spinel, magnetite, sometimes also rutile inclusions. Spinels with no visible inclusions are more valuable, and the more inclusions there are, the lower the value of the stone.
③Cutting
Gemstones are cut in a variety of shapes. Spinel is usually cut into cushion and oval shapes, and a good cut and proportional cut will show off the sparkle of spinel.
④Carat Weight
As with all gemstones, the larger the spinel, the more valuable it is. Of course, like any other gemstone, there is a carat premium. The larger the stone, the higher the price per carat, and for large carats, the price per carat rises dramatically.
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