Exceptional Large Rare Tenebrescent Hackmanite Gemstone 3.79 cts.

$2,250.00 $3,000.00

Shipping to United States: Free

Gem: Hackmanite (Tenebrescent)
Weight: 3.79 cts.
Size: 20.20 x 7.06 mm.
Color: Colorless to Deep Purple
Clarity: I
Cut: Freeform
Locality: Afghanistan
Treatment: None

Here is a special gemstone! Hackmanite is a rare Sulfur rich form of Sodalite. The material from Afghanistan displays the rarest optical phenomenon called Tenebrescence. Tenebrescence is when the stone changes color through a photochemical reaction to UV radiation. With Hackmanite, the stones are colorless or near colorless and change to a deep purple in sunlight or under a UV light. The effect is reversible and if the stone is left in a dark place it will change back to near colorless. This process can happen indefinitely, but is destroyed by heating the stone. The first gem grade Hackmanite was discovered in Canada in 1991, so this is a relatively new gem mineral. Hackmanite also fluoresces a bright red/orange color, which will also cause a rapid Tenebrescent effect. These stones are quite rare and a spectacular gemological treasure! This stone is nearing 4 carats which is gigantic for the species! Enjoy!

Shipping from United States

Processing time

1-2 business days

Estimated shipping times

  • North America : 3 - 7 business days
  • Europe : 5 - 12 business days
  • Asia Pacific : 7 - 14 business days

I'll do my best to meet these shipping estimates, but can't guarantee them. Actual delivery time will depend on the shipping method you choose.

Customs and import taxes

Buyers are responsible for any customs and import taxes that may apply. I'm not responsible for delays due to customs.

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Returns & Exchanges

I gladly accept returns and exchanges

Just contact me within: 7 days of delivery

Ship items back to me within: 14 days of delivery

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But please contact me if you have any problems with your order.

The following items can't be returned or exchanged

Because of the nature of these items, unless they arrive damaged or defective, I can't accept returns for:

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Conditions of return

Buyers are responsible for return shipping costs. If the item is not returned in its original condition, the buyer is responsible for any loss in value.

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