Nuummite
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Physical & Optical Properties
Category
Semi-Precious Gems
Mohs Hardness
5.5 – 6.0
Specific Gravity
3.18 – 3.37
Refractive Index
1.635 – 1.663
Crystal System
Orthorhombic
Cleavage
Perfect
Color
various
Birefringence
0.022
Mohs Hardness
| Mohs | Reference mineral | Nuummite |
|---|---|---|
| 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 Nuummite
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 Nuummite
努米特石（尊贵欧泊）是世界上已知最古老的岩石之一（约30亿年前），产自格陵兰岛（努米特地区，因而得名），是以硫化铁系矿物（主要为黄铁矿和磁黄铁矿）的细小晶体集合体与其他矿物共生形成的黑色火成岩集合体，内部金黄至绿色的叶片状矿物反射出独特的金属光泽游彩（schiller），宛如宇宙星空，使其成为极受收藏家追捧的宝石材料。努米特石通常不透明，切磨成蛋面宝石或雕件，展示最佳的内部光泽效果。格陵兰（伊利曼纳克地区）是唯一产地，产量有限，每年开采量受严格控制。摩氏硬度约6，价格适中。
On this page
Jewelry Use
Durability
4/10
Science FYI Family
Frequently Asked Questions
What is Nuummite?
努米特石（尊贵欧泊）是世界上已知最古老的岩石之一（约30亿年前），产自格陵兰岛（努米特地区，因而得名），是以硫化铁系矿物（主要为黄铁矿和磁黄铁矿）的细小晶体集合体与其他矿物共生形成的黑色火成岩集合体，内部金黄至绿色的叶片状矿物反射出独特的金属光泽游彩（schiller），宛如宇宙星空，使其成为极受收藏家追捧的宝石材料。努米特石通常不透明，切磨成蛋面宝石或雕件，展示最佳的内部光泽效果。格陵兰（伊利曼纳克地区）是唯一产地，产量有限，每年开采量受严格控制。摩氏硬度约6，价格适中。
What is the hardness of Nuummite?
Nuummite has a Mohs hardness of 5.5 to 6.0, making it moderate for use in jewelry.
What color is Nuummite?
Nuummite is primarily Various.
How much does Nuummite cost?
Nuummite falls into the Budget (< $50/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Nuummite?
Nuummite belongs to the Orthorhombic crystal system.