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Very Rare 17.355 ct Tenebrescent & Fluorescent Hackmanite Rough
- SKU
- Dimensions (mm)
- 18.500 x 16.500 x 11.200mm
- Weight (cts)
- 86.775
- Treatment
- No Treatment
- Type
- Rough
- Colours
-
Discovered in Greenland in the late 1890’s, hackmanite is named for Finnish geologist Victor Hackman. It is a rare occurrence to find gem-grade hackmanite; at best, most crystals are translucent. Hackmanite is the light pink to pale violet variety of sodalite. It is a particularly unusual gem because it exhibits a special optical property known as “tenebrescence,” a type of reversible photochromism. This feature allows the gems to temporarily change color when exposed to different light forms. While hackmanite gems are usually pink to violet, the color quickly fades to gray or greenish-white in sunlight, and will slowly return to the original color after changing the light. Its tenebrescent property makes hackmanite a prized mineral for collectors.
Feel free to to “make an offer” on our other items :)
We Accept Payments through
- Paypal
- Direct Deposit
- Credit Cards
- SKU
- Dimensions (mm)
- 18.500 x 16.500 x 11.200 mm
- Weight (cts)
- 86.775
- Treatment
- No Treatment
- Type
- Rough
- Colours
-
Discovered in Greenland in the late 1890’s, hackmanite is named for Finnish geologist Victor Hackman. It is a rare occurrence to find gem-grade hackmanite; at best, most crystals are translucent. Hackmanite is the light pink to pale violet variety of sodalite. It is a particularly unusual gem because it exhibits a special optical property known as “tenebrescence,” a type of reversible photochromism. This feature allows the gems to temporarily change color when exposed to different light forms. While hackmanite gems are usually pink to violet, the color quickly fades to gray or greenish-white in sunlight, and will slowly return to the original color after changing the light. Its tenebrescent property makes hackmanite a prized mineral for collectors.
Feel free to to “make an offer” on our other items :)
We Accept Payments through
- Paypal
- Direct Deposit
- Credit Cards
| Shipping provider | Shipping to Thailand | Shipping to rest of world |
|---|---|---|
| FedEx | $35.00 / 2 days | $35.00 / 5 days |
|
Thailand
FedEx is discounted to $35.00 on orders with 2 or more items
Rest of the world
FedEx is discounted to $35.00 on orders with 2 or more items
|
||
| Express Shipping | $55.00 / 2 days | $55.00 / 5 days |
|
Thailand
Express Shipping is discounted to $55.00 on orders with 2 or more items
Rest of the world
Express Shipping is discounted to $55.00 on orders with 2 or more items
|
||
| Registered Shipping | $10.00 / 7 days | $10.00 / 21 days |
|
Thailand
Registered Shipping is discounted to $10.00 on orders with 2 or more items
Rest of the world
Registered Shipping is discounted to $10.00 on orders with 2 or more items
|
||
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PositiveGreat to do business with. Beautiful stone.
