Fire Opal, a generic term for a precious opal with an orange-yellow, orange-red to reddish body color, transparent to translucent, and no color-changing effects. Sometimes called Mexican Fire Opal. It is an opal with a "flaming" body color, i.e., a red or yellow tint. Fire Opal has a long history and was prized by the natives as early as the Mayan and Aztec periods, who called this gemstone with its warm, attractive orange-red hue "the bird of paradise".
❤️ [Fire Opal]
English name: Pyrophane, Fire Opal
Alias: Mexican Fire Opal
Chemical Name: Hydrated Silicon Dioxide
Chemical formula: SiO2.nH2O
Chemical Classification: Silicate
Hardness: 5-6.5
Specific gravity: 1.920-2.38
Luster: glassy, resinous
Fracture: shell-like
Transparency: transparent - opaque
Refractive index: 1.370-1.460
[Color]
It is called "Fire Opal" because it has nothing to do with flames. In addition to the formation of the cause is "volcanic", fire opal color is also related to "fire", it is generally orange, orange-red, red, close to the color of the flame of the orange to red tones, better transparency of the opal, can be called "fire opal". Fire Opal".
[Value]
The degree of color and luster directly determines the value of fire opal, orange, bright orange, bright red opal can be classified as fire opal. The closer to the flame color the more collectible it is, with red being the most expensive, the redder the better, the corresponding orange is more precious than yellow. Top/grade fire opal color is as bright as a burning flame, and has a very high transparency. Volcanic fire opal color is very stable, not easy to change, with proper maintenance, fire opal color can be accompanied by a lifetime of bright colors.
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