By Chisom Ibemere
Danburite is a calcium boron silicate mineral, It was given its name after Danbury, Connecticut, United States, where it was first discovered in 1839 by Charles Upham Shephard.
Danburite has a crystal symmetry and form which are similar to that of topaz; however, topaz is a calcium fluorine bearing nesosilicate. Its clarity, resilience, and strong dispersion qualifies it as a valuable stones for jewelry.
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Danburite has a Mohs hardness of 7 to 7.5 and a specific gravity of 3.0. It has an orthorhombic crystal form. It is basically colourless, like quartz, but may have pale yellow or yellowish-brown colour. It is found in contact metamorphic rocks. It is classified as sorosilicate in the Dana classification of minerals and the Strunz classification scheme lists it as a tectosilicate.
Danburite occurs in small prismatic crystals and has a colour range between white to light yellow and also a light shade of brown. Danburite of Very high quality is colorless and usually transparent. Most times, it occurs with a druzy coating of Quartz over it. It is attracted to Gem collectors due to its clarity and resilience.
Danburite has been found in these many locations like Russia, Mexico, Bolivia, Myanmar, Japan and Madagascar.
