Moss Opal
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Physical & Optical Properties
Category
Semi-Precious Gems
Mohs Hardness
5.5 – 6.5
Specific Gravity
1.98 – 2.5
Refractive Index
1.37 – 1.52
Crystal System
Amorphous
Cleavage
None
Fracture
Conchoidal,Splintery
Color
white
Pleochroism
Absent
Mohs Hardness
| Mohs | Reference mineral | Moss Opal |
|---|---|---|
| 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 Moss Opal
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 Moss Opal
モスオパールは、鉄酸化物・マンガン酸化物または緑泥石による苔状または樹状包有物を含むコモンオパールの一種で、不透明〜半透明の白色・灰色または無色のオパールマトリックス内に緑・褐色または黒色の植物的なパターンを作り出します。貴重オパールとは異なり遊色はほとんどなく、その魅力は石中に見られる自然的な景観や植物のようなパターンにあります。ネバダ（アメリカ）・メキシコ・ペルーが産地で、手頃な価格のカボションやコレクター向け彫刻品に使われます。
On this page
Jewelry Use
Durability
4/10
Science FYI Family
Frequently Asked Questions
What is Moss Opal?
モスオパールは、鉄酸化物・マンガン酸化物または緑泥石による苔状または樹状包有物を含むコモンオパールの一種で、不透明〜半透明の白色・灰色または無色のオパールマトリックス内に緑・褐色または黒色の植物的なパターンを作り出します。貴重オパールとは異なり遊色はほとんどなく、その魅力は石中に見られる自然的な景観や植物のようなパターンにあります。ネバダ（アメリカ）・メキシコ・ペルーが産地で、手頃な価格のカボションやコレクター向け彫刻品に使われます。
What is the hardness of Moss Opal?
Moss Opal has a Mohs hardness of 5.5 to 6.5, making it moderate for use in jewelry.
What color is Moss Opal?
Moss Opal is primarily White.
How much does Moss Opal cost?
Moss Opal falls into the Budget (< $50/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Moss Opal?
Moss Opal belongs to the Amorphous crystal system.