Periclase
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Physical & Optical Properties
Category
Semi-Precious Gems
Mohs Hardness
5.5 – 6.0
Specific Gravity
3.7 – 3.9
Refractive Index
1.735 – 1.738
Crystal System
Isometric
Luster
Vitreous
Color
various
Mohs Hardness
| Mohs | Reference mineral | Periclase |
|---|---|---|
| 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 Periclase
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 Periclase
方镁石是一种简单的氧化镁矿物，以其纯白色至灰白色的外观和玻璃光泽著称，属于岩盐型立方晶系结构，晶体完美，解理明显。方镁石产于富镁的变质大理岩中，与钙硅石、透辉石等钙硅酸盐矿物共生，是天然形成温度极高、代表深部变质作用的矿物。由于折射率较高且硬度中等（莫氏5.5），透明的方镁石晶体偶被切磨为刻面宝石供矿物学研究和专业收藏，但在商业市场上几乎没有流通。方镁石在工业上是制造高温耐火材料的重要原料。
On this page
Jewelry Use
Durability
4/10
Science FYI Family
Frequently Asked Questions
What is Periclase?
方镁石是一种简单的氧化镁矿物，以其纯白色至灰白色的外观和玻璃光泽著称，属于岩盐型立方晶系结构，晶体完美，解理明显。方镁石产于富镁的变质大理岩中，与钙硅石、透辉石等钙硅酸盐矿物共生，是天然形成温度极高、代表深部变质作用的矿物。由于折射率较高且硬度中等（莫氏5.5），透明的方镁石晶体偶被切磨为刻面宝石供矿物学研究和专业收藏，但在商业市场上几乎没有流通。方镁石在工业上是制造高温耐火材料的重要原料。
What is the hardness of Periclase?
Periclase has a Mohs hardness of 5.5 to 6.0, making it moderate for use in jewelry.
What color is Periclase?
Periclase is primarily Various.
How much does Periclase cost?
Periclase falls into the Budget (< $50/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Periclase?
Periclase belongs to the Isometric crystal system.