Magnetite
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Physical & Optical Properties
Category
Semi-Precious Gems
Mohs Hardness
5.5 – 6.5
Specific Gravity
5.2
Refractive Index
2.42
Crystal System
Isometric
Luster
Metallic
Cleavage
Good
Fracture
Uneven,Irregular
Color
various
Mohs Hardness
| Mohs | Reference mineral | Magnetite |
|---|---|---|
| 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 Magnetite
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 Magnetite
磁铁矿是一种铁氧化物矿物（Fe₃O₄），在自然界中磁性最强，通常形成不透明黑色八面体晶体或粒状集合体，具有金属至亚金属光泽。磁铁矿是铁的重要工业矿石，但其强磁性和独特的金属外观也使其成为宝石和矿物收藏领域的特色品种。天然磁铁矿（称为磁石）自古便被用于制作指南针，是人类认识地磁的重要媒介。宝石级磁铁矿通常被磨制成弧面石或珠子，摩氏硬度5.5至6.5，比重较高（约5.2），质感沉重。重要产地包括瑞典（基律纳铁矿）、南非（芬施矿）、美国（纽约州）、挪威和俄罗斯。
On this page
Jewelry Use
Durability
4/10
Science FYI Family
Frequently Asked Questions
What is Magnetite?
磁铁矿是一种铁氧化物矿物（Fe₃O₄），在自然界中磁性最强，通常形成不透明黑色八面体晶体或粒状集合体，具有金属至亚金属光泽。磁铁矿是铁的重要工业矿石，但其强磁性和独特的金属外观也使其成为宝石和矿物收藏领域的特色品种。天然磁铁矿（称为磁石）自古便被用于制作指南针，是人类认识地磁的重要媒介。宝石级磁铁矿通常被磨制成弧面石或珠子，摩氏硬度5.5至6.5，比重较高（约5.2），质感沉重。重要产地包括瑞典（基律纳铁矿）、南非（芬施矿）、美国（纽约州）、挪威和俄罗斯。
What is the hardness of Magnetite?
Magnetite has a Mohs hardness of 5.5 to 6.5, making it moderate for use in jewelry.
What color is Magnetite?
Magnetite is primarily Various.
How much does Magnetite cost?
Magnetite falls into the Budget (< $50/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Magnetite?
Magnetite belongs to the Isometric crystal system.