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 Home / Gem Library / Natural Gemstones / Hambergite November 23, 2017  


Natural Hambergite
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There are 2 Hambergite(s) available at Multicolour.com


Hambergite is named after the Swedish Mineralogist, Axel Hamburg. It forms in flattened prismatic orthorhombic crystals with vitreous to dull luster. It is a brittle mineral with perfect cleavage in one direction and conchoidal to uneven fracture.


Known Facts
Color Key: Colorless, white, grayish white, yellowish white.
Refractive Index: 1.55 - 1.63
Chemical Composition: Be2 BO3 (OH,F)
Hardness: 7.5
Density: 2.35 - 2.37
Crystal Group: Orthorhombic
Ocurrence: Anjanabanoana, Madagascar; Molo, Myanmar; India; Czech Republic; California, U.S.A.; Langesundsfjord, Norway.

Hambergite was originally discovered in southern Norway but that material was not clean enough to be considered gem material. The most important current source is probably in Anjanabanoana, Madagascar. Recently, some nice material has also been unearthed in Molo, Myanmar, but most of the crystals are small.

Hambergite has the lowest known density of any gem with such a high birefringence (.072). These unique properties make it easy to identify. Stones have little fire any may resemble quartz but with the high birefringence, hambergite is nearly impossible to misidentify.

References:

R. Webster, 1994, Fifth edition, Gems Their Sources, Descriptions And Identification, Reed Educational and Professional Publishing Ltd.


Illustrations
Hambergite
Check our Top, Largest, Smallest or Latest Hambergite's.


Hambergite Stats/
Popularity Index: 15080hits
Total Items: 2items
Total Weight: CTS 2.58
Cheapest: USD 131.00
Most Expensive: USD 188.40
Largest: CTS 1.52
Smallest: CTS 1.06
Last Added: 12/28/16 09:23:30

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