Bastnäsite
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Physical & Optical Properties
Category
Semi-Precious Gems
Mohs Hardness
4.0 – 4.5
Specific Gravity
4.78 – 5.2
Refractive Index
1.72 – 1.82
Crystal System
Hexagonal
Luster
Vitreous,Pearly
Cleavage
Distinct,Poor
Fracture
Uneven
Color
various
Birefringence
0.1
Pleochroism
Weak
Mohs Hardness
| Mohs | Reference mineral | Bastnäsite |
|---|---|---|
| 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 Bastnäsite
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 Bastnäsite
氟碳铈矿是最重要的稀土矿石矿物之一，呈现出特征性的蜡黄色至橙黄色，具有树脂光泽。这种矿物是全球稀土元素的重要来源，中国内蒙古白云鄂博矿山是世界上最大的氟碳铈矿产地。在宝石界，氟碳铈矿主要以矿物标本形式受到收藏，因其含有稀土元素而具有特殊的科学价值。
On this page
Jewelry Use
Durability
3/10
Science FYI Family
Frequently Asked Questions
What is Bastnäsite?
氟碳铈矿是最重要的稀土矿石矿物之一，呈现出特征性的蜡黄色至橙黄色，具有树脂光泽。这种矿物是全球稀土元素的重要来源，中国内蒙古白云鄂博矿山是世界上最大的氟碳铈矿产地。在宝石界，氟碳铈矿主要以矿物标本形式受到收藏，因其含有稀土元素而具有特殊的科学价值。
What is the hardness of Bastnäsite?
Bastnäsite has a Mohs hardness of 4.0 to 4.5, making it relatively soft for use in jewelry.
What color is Bastnäsite?
Bastnäsite is primarily Various.
How much does Bastnäsite cost?
Bastnäsite falls into the Budget (< $50/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Bastnäsite?
Bastnäsite belongs to the Hexagonal crystal system.