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
ペリクレース（酸化マグネシウム，MgO）は、完全な劈開と鮮明なガラス〜ダイヤモンド光沢を持つ無色〜淡緑色または灰色の等軸結晶を形成する鉱物で、ドロマイト石灰岩の接触変成岩や一部の塩基性火成岩に産します。イタリアのプレダッツォ地域やヨーロッパ各地の石灰岩接触変成帯に天然産地があります。合成ペリクレースは工業用耐火材料として重要ですが、天然の宝石質透明結晶は極めて稀少なコレクター標本です。
On this page
Jewelry Use
Durability
4/10
Science FYI Family
Frequently Asked Questions
What is Periclase?
ペリクレース（酸化マグネシウム，MgO）は、完全な劈開と鮮明なガラス〜ダイヤモンド光沢を持つ無色〜淡緑色または灰色の等軸結晶を形成する鉱物で、ドロマイト石灰岩の接触変成岩や一部の塩基性火成岩に産します。イタリアのプレダッツォ地域やヨーロッパ各地の石灰岩接触変成帯に天然産地があります。合成ペリクレースは工業用耐火材料として重要ですが、天然の宝石質透明結晶は極めて稀少なコレクター標本です。
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.