Ludlamite
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Physical & Optical Properties
Category
Semi-Precious Gems
Mohs Hardness
3.0 – 4.0
Specific Gravity
3.1 – 3.2
Refractive Index
1.653 – 1.693
Crystal System
Monoclinic
Luster
Vitreous
Cleavage
Perfect
Fracture
Uneven
Color
various
Birefringence
0.04
Pleochroism
Nil
Mohs Hardness
| Mohs | Reference mineral | Ludlamite |
|---|---|---|
| 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 Ludlamite
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 Ludlamite
ラドラマイトは、鮮やかなアップルグリーン色の水酸化第一鉄リン酸塩鉱物で、モノクリニック系の板状・プリズム状結晶として産し、ガラス光沢を呈します。天然のリン酸鉄鉱物の中で最も美しい色調の一つを持ち、ボリビア・ドイツ・チェコ・米国アイダホ州などが産地として知られています。透明な切り石はコレクター向けに極めて希少であり、色彩と透明度の美しさから高く評価されています。
On this page
Jewelry Use
Durability
2/10
Science FYI Family
Frequently Asked Questions
What is Ludlamite?
ラドラマイトは、鮮やかなアップルグリーン色の水酸化第一鉄リン酸塩鉱物で、モノクリニック系の板状・プリズム状結晶として産し、ガラス光沢を呈します。天然のリン酸鉄鉱物の中で最も美しい色調の一つを持ち、ボリビア・ドイツ・チェコ・米国アイダホ州などが産地として知られています。透明な切り石はコレクター向けに極めて希少であり、色彩と透明度の美しさから高く評価されています。
What is the hardness of Ludlamite?
Ludlamite has a Mohs hardness of 3.0 to 4.0, making it relatively soft for use in jewelry.
What color is Ludlamite?
Ludlamite is primarily Various.
How much does Ludlamite cost?
Ludlamite falls into the Budget (< $50/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Ludlamite?
Ludlamite belongs to the Monoclinic crystal system.