|Color||Colorless, White, Gray, Brownish white, Straw yellow|
|Mohs scale hardness||7 - 7.5|
|Luster||Vitreous - Greasy|
|Diaphaneity||Transparent to translucent|
|Ultraviolet fluorescence||Fluorescent and thermoluminescent (red), Short UV=violet blue, Long UV=blue to blue-green|
Danburite is a crystalline mineral similar to topaz.
Its chemical formula is CaB2(SiO4)2. It has a Mohs hardness of 7 to 7.5 and a specific gravity of 3.0. The mineral has an orthorhombic crystal form. It is usually colourless, like quartz, but can be also either pale yellow, yellowish-brown, or pink. It typically occurs in contact metamorphic rocks.
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