Hackmanite
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Physical & Optical Properties
Category
Semi-Precious Gems
Mohs Hardness
5.5 – 6.0
Specific Gravity
2.27 – 2.33
Refractive Index
1.483 – 1.487
Crystal System
Isometric
Luster
Vitreous,Greasy
Cleavage
Poor
Fracture
Uneven
Color
various
Mohs Hardness
| Mohs | Reference mineral | Hackmanite |
|---|---|---|
| 1 | Talc | |
| 2 | Gypsum | |
| 3 | Calcite | |
| 4 | Fluorite | |
| 5 | Apatite | |
| 6 | Orthoclase | ● |
| 7 | Quartz | |
| 8 | Topaz | |
| 9 | Corundum | |
| 10 | Diamond |
Crystal System
Value & Market
Price Tier
Budget (< $50/ct)
Where to Buy Hackmanite
Blue Nile
Fine jewelry retailer
James Allen
Gemstone jewelry
Brilliant Earth
Ethically sourced gems
Amazon
Wide selection
Links may earn a commission at no extra cost to you.
About Hackmanite
变色方钠石（哈克曼石）是方钠石的一种特殊变体，以其令人惊叹的光致变色效应著称——在紫外线照射后会从白色或粉白色变为紫色至深紫色，离开紫外线后又逐渐褪回原色。这种可逆的颜色变化过程可无限重复，使其成为矿物界最奇特的光学现象之一。哈克曼石主要产于阿富汗、缅甸和加拿大，是矿物收藏界和宝石爱好者的珍爱品种。
On this page
Jewelry Use
Durability
4/10
Science FYI Family
Frequently Asked Questions
What is Hackmanite?
变色方钠石（哈克曼石）是方钠石的一种特殊变体，以其令人惊叹的光致变色效应著称——在紫外线照射后会从白色或粉白色变为紫色至深紫色，离开紫外线后又逐渐褪回原色。这种可逆的颜色变化过程可无限重复，使其成为矿物界最奇特的光学现象之一。哈克曼石主要产于阿富汗、缅甸和加拿大，是矿物收藏界和宝石爱好者的珍爱品种。
What is the hardness of Hackmanite?
Hackmanite has a Mohs hardness of 5.5 to 6.0, making it moderate for use in jewelry.
What color is Hackmanite?
Hackmanite is primarily Various.
How much does Hackmanite cost?
Hackmanite falls into the Budget (< $50/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Hackmanite?
Hackmanite belongs to the Isometric crystal system.