Agate 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 | Agate 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 Agate 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 Agate Opal
瑪瑙オパールは、瑪瑙と普通オパールが緻密に共生した移行的な素材で、縞模様の玉髄と半不透明なオパールの特性を兼ね備えた石です。独特の縞とオパールの乳白色光沢が組み合わさり、装飾用途に独自の美しさを提供します。コレクターの間でその希少な複合的性質が評価されています。
On this page
Jewelry Use
Durability
4/10
Science FYI Family
Frequently Asked Questions
What is Agate Opal?
瑪瑙オパールは、瑪瑙と普通オパールが緻密に共生した移行的な素材で、縞模様の玉髄と半不透明なオパールの特性を兼ね備えた石です。独特の縞とオパールの乳白色光沢が組み合わさり、装飾用途に独自の美しさを提供します。コレクターの間でその希少な複合的性質が評価されています。
What is the hardness of Agate Opal?
Agate Opal has a Mohs hardness of 5.5 to 6.5, making it moderate for use in jewelry.
What color is Agate Opal?
Agate Opal is primarily White.
How much does Agate Opal cost?
Agate Opal falls into the Budget (< $50/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Agate Opal?
Agate Opal belongs to the Amorphous crystal system.