Danburite

Danburite is a lovely crystalline mineral which is usually either clear and colourless or a yellowy-brown.

Higher quality specimens are sometimes faceted for jewellery makers.

Showing the single result

Appearance, Uses and History

Danburite is pretty much exclusively used as a gemstone and a collectors stone.

Due to its clarity and hardness, it can be used as a faceted stone, as reasonably clear stones occur in fairly large sizes. The clear colourless stones are most popular for faceting. In some rare cases, Danburite can display chatoyancy.

It was named in 1839 after the town of Danbury, Connecticut, USA – however, there is no gem grade material found there.


Locales

A relatively rare crystal with good specimens found in Austria, Italy, Japan, Madagascar, Mexico, Myanmar, Russia, Switzerland and the USA.


Mineralogy

Chemistry
Calcium Boron Silicate mineral with the formula CaB2Si2O8
Colours and Variations
Clear/colourless, pale yellow, yellow brown, grey, pink, blue.
Streak
White
Luster
Vitreous, greasy
Fracture
Subconchoidal to uneven
Crystal habit
Prismatic crystals.
Mohs hardness
7.0 – 7.5
Specific Gravity
2.93 – 3.02
Easiest testing method
Common Treatments

Photos of Danburite

Danburite (Mexique) 6
Danburite (Mexique)
Danburite 2581

Danburite-rare08-2-71b
DanburiteMexique
Datolite-Danburite-Chalcopyrite-169724

Hazards and Warnings

Almost all rocks, minerals (and, frankly, almost all other substances on earth) can produce toxic dust when cutting, which can cause serious respiratory conditions including silicosis.

When cutting or polishing rocks, minerals, shells, etc, all work should be done wet to minimise the dust, and a suitable respirator or extraction system should be used.


Translations

Arabic:

  • دانبوريت

Hindi:

Portuguese:

Bengali:

Indonesian:

Punjabi:

  • ਡੈਨਬੂਰਾਈਟ

English:

Italian:

Russian:

  • Данбурит

French:

Japanese:

  • ダンブリ石

Spanish:

  • danburita

German:

  • Danburit

Korean:

Thai:

Gujurati:

Mandarin and Traditional Chinese:

Urdu:

  • ڈینبوریٹ

Further Reading / External Links