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
バストネサイトはランタノイド類を抽出するための世界で最も重要な鉱石鉱物の一つである稀土類フッ化炭酸塩鉱物です。電気自動車・風力発電・電子機器に不可欠な希土類元素の供給源として現代産業において戦略的重要性が高い鉱物です。宝石用の黄橙色の透明結晶も稀に産出します。
On this page
Jewelry Use
Durability
3/10
Science FYI Family
Frequently Asked Questions
What is Bastnäsite?
バストネサイトはランタノイド類を抽出するための世界で最も重要な鉱石鉱物の一つである稀土類フッ化炭酸塩鉱物です。電気自動車・風力発電・電子機器に不可欠な希土類元素の供給源として現代産業において戦略的重要性が高い鉱物です。宝石用の黄橙色の透明結晶も稀に産出します。
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.