Item Information

Dimensions (mm) 6.7 x 4.8 x 3.3mm
Weight (carats) 0.54 carats
Certified Gemstone



This is a natural untreated heckmanite mined in Burma. Hackmanite is usually opaque however this beautiful gem is transparent.

Hardenss 5 to 6

Hackmanite is an important variety of sodalite exhibiting tenebrescence. Conversely, hackmanite from Afghanistan and the Myanmar Republic (Burma) starts off creamy white but develops a violet to pink-red colour in sunlight. If left in a dark environment for some time, the violet will fade again. Tenebrescence is accelerated by the use of longwave or, particularly, shortwave ultraviolet light. Much sodalite will also fluoresce a patchy orange under UV light. (See also photochromism).

12h 52m 24s

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Pricing & Details

Bid Increment $1.00
Starting Bid $65.00
Auction ID 298333
Watchers 4 watching
Viewed 1,366 times
Starts 22nd Oct 2016 8:02pm PDT
Ends 24th Oct 2016 8:00pm PDT

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