|Dimensions (mm)||6.7 x 4.8 x 3.3mm|
|Weight (carats)||0.54 carats|
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).
|Starts||16th Jan 2017 7:02pm PST|
|Ends||18th Jan 2017 7:00pm PST|
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