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$121.00
Reserve Not Met
Current Bid
1
Bids
16/11/2024 09:45 pm
1
794
2

Rarest Hackmanite 1.42 ct UV Fluorescence Color change

SKU
Dimensions (mm)
8.980 x 8.910 x 4.560mm
Weight (cts)
1.420
Treatment
No Treatment
Shape
Trilliant
Type
Faceted
Clarity
SI
Colours

Terms and Conditions

Hackmanite is a rare mineral that belongs to the halide mineral group. It is a translucent to transparent mineral with a vitreous luster and typically exhibits a yellow to greenish-yellow color.

Hackmanite is known for its unique property called tenebrescence. This means that the mineral can display a different color under various lighting conditions. When exposed to shortwave ultraviolet (UV) light, Hackmanite can exhibit a deep purple or violet color. However, when the UV light is removed, it gradually fades back to its original yellow or greenish-yellow color. This phenomenon is known as reversible photochromism.

The tenebrescent behavior of Hackmanite is caused by the presence of trace amounts of sulfur (S) within the crystal structure. The sulfur ions can trap electrons, which are released when exposed to UV light, resulting in the purple color. This responsive characteristic has made Hackmanite a popular material in jewelry, especially when cut into gemstones.

Hackmanite was first discovered in Greenland in 1896 and was named after Axel Hackman, a Finnish mineralogist who extensively studied the mineral. It is also found in other locations around the world, including Afghanistan, Canada, Russia, and the United States.

In addition to its use in jewelry, Hackmanite is also of scientific interest due to its ability to store luminescent energy and its potential applications in technologies such as optical data storage and fluorescent lighting.

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Shipping Policy

We will usually ship within 1 business days after we receive the complete payment.

Thank you

Shipping provider Shipping to Thailand Shipping to rest of world
Standard Shipping - Tracked $8.00 / 20 days $18.00 / 21 days
Thailand
Standard Shipping - Tracked is discounted to $16.00 on orders with 2 or more items
Rest of the world
Standard Shipping - Tracked is discounted to $30.00 on orders with 2 or more items
FedEx $40.00 / 10 days $45.00 / 10 days
Thailand
FedEx is discounted to $40.00 on orders with 2 or more items
Rest of the world
FedEx is discounted to $45.00 on orders with 2 or more items

crysta1gems
crysta1gems
Certified Gemologist and Professional Lapidarist , Deals in Precious and Semi-Precious Gemstones and we had Mine Sources and our Prices is reasonable .
Bangkok, Thailand
Verified
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Bids History (1)

Reserve not met

vjuenke
Purchased from this seller previously
6 months ago
$120.00

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Shipping Details

Shipping:
$18.00 21 days via Standard Shipping - Tracked
Ships from:
Thailand

Payment Options

  • paypal

Overview

Listing Type : Standard
Product ID : 2426766
Starting Bid : $1
Starts : 2nd November 2024 10:45 pm PDT
Ends : 16th November 2024 09:45 pm PST
* All prices are in USD