Tantalite
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Physical & Optical Properties
Category
Semi-Precious Gems
Mohs Hardness
6.0 – 6.5
Specific Gravity
5.18 – 8.2
Refractive Index
2.19 – 2.457
Crystal System
Orthorhombic
Luster
Submetallic
Cleavage
Distinct
Fracture
Sub-Conchoidal
Color
various
Birefringence
0.083
Pleochroism
Sometimes strong
Mohs Hardness
| Mohs | Reference mineral | Tantalite |
|---|---|---|
| 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
Moderate ($50-500/ct)
Where to Buy Tantalite
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 Tantalite
钽铁矿是一种铁锰钽氧化物矿物，呈深棕色至黑色，以其极高密度和金属光泽至半金属光泽著称。宝石级钽铁矿较为罕见，但由于其独特的深色和高折射率，有时被切割成收藏级刻面宝石。钽铁矿是提取钽元素的重要矿石，产自巴西、刚果民主共和国（主要产地）、澳大利亚和加拿大的花岗伟晶岩中。
On this page
Jewelry Use
Durability
5/10
Science FYI Family
Frequently Asked Questions
What is Tantalite?
钽铁矿是一种铁锰钽氧化物矿物，呈深棕色至黑色，以其极高密度和金属光泽至半金属光泽著称。宝石级钽铁矿较为罕见，但由于其独特的深色和高折射率，有时被切割成收藏级刻面宝石。钽铁矿是提取钽元素的重要矿石，产自巴西、刚果民主共和国（主要产地）、澳大利亚和加拿大的花岗伟晶岩中。
What is the hardness of Tantalite?
Tantalite has a Mohs hardness of 6.0 to 6.5, making it moderate for use in jewelry.
What color is Tantalite?
Tantalite is primarily Various.
How much does Tantalite cost?
Tantalite falls into the Moderate ($50-500/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Tantalite?
Tantalite belongs to the Orthorhombic crystal system.