Petrified Wood (Fossilized Wood)
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Physical & Optical Properties
Category
Semi-Precious Gems
Mohs Hardness
6.5 – 7.0
Specific Gravity
2.58 – 2.91
Crystal System
Trigonal
Cleavage
None
Fracture
Uneven,Splintery
Color
various
Pleochroism
Absent
Mohs Hardness
| Mohs | Reference mineral | Petrified Wood (Fossilized Wood) |
|---|---|---|
| 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
Moderate ($50-500/ct)
Where to Buy Petrified Wood (Fossilized Wood)
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 Petrified Wood (Fossilized Wood)
珪化木（珪化化石木）は、有機物の木材が数百万年かけてシリカ（石英・玉髄・オパール）・酸化鉄などの鉱物に分子単位で置換されてできた化石で、元の細胞構造を保持したまま石のように硬化したものです。クリーム白・タン・鮮やかな赤・橙・黄・青・黒など、置換鉱物の種類によって多彩な色を示します。米国アリゾナ州化石森林国定公園・ドイツのケムニッツ・アメリカ西部のシンル累層などが世界的に著名な産地です。
On this page
Jewelry Use
Durability
6/10
Science FYI Family
Frequently Asked Questions
What is Petrified Wood (Fossilized Wood)?
珪化木（珪化化石木）は、有機物の木材が数百万年かけてシリカ（石英・玉髄・オパール）・酸化鉄などの鉱物に分子単位で置換されてできた化石で、元の細胞構造を保持したまま石のように硬化したものです。クリーム白・タン・鮮やかな赤・橙・黄・青・黒など、置換鉱物の種類によって多彩な色を示します。米国アリゾナ州化石森林国定公園・ドイツのケムニッツ・アメリカ西部のシンル累層などが世界的に著名な産地です。
What is the hardness of Petrified Wood (Fossilized Wood)?
Petrified Wood (Fossilized Wood) has a Mohs hardness of 6.5 to 7.0, making it moderate for use in jewelry.
What color is Petrified Wood (Fossilized Wood)?
Petrified Wood (Fossilized Wood) is primarily Various.
How much does Petrified Wood (Fossilized Wood) cost?
Petrified Wood (Fossilized Wood) falls into the Moderate ($50-500/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Petrified Wood (Fossilized Wood)?
Petrified Wood (Fossilized Wood) belongs to the Trigonal crystal system.