Snowflake Obsidian
What is Snowflake Obsidian?
Snowflake Obsidian is a volcanic glass that contains inclusions of white or gray cristobalite, which create the "snowflake" patterns. It forms from rapidly cooled lava, preventing crystal growth and resulting in a glassy texture. The snowflake patterns are formed by the crystallization of cristobalite, a high-temperature polymorph of quartz, within the obsidian. This gemstone is often used for ornamental purposes and is believed by some to have metaphysical properties.
Optical Properties
- Refractive Index
- 1.48-1.51
- Birefringence
- None
- Pleochroism
- None
- Optical Character
- Isotropic
- Dispersion
- None
Discover Values
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Snowflake Obsidian before comparing listings or appraisals.
Size & Weight
Larger, intact specimens usually command higher prices.
Rarity & Demand
Scarce material or popular varieties sell at a premium.
Condition & Finish
Chips, repairs, and heavy wear lower value; clean prep helps.
Treatment & Provenance
Untreated specimens with documented locality are prized.
Quick Facts
Physical Properties
- Color
- Black with white or gray inclusions
- Hardness (Mohs)
- 5-5.5
- Rock tumbling
- With care
- Density
- 2.35-2.6 g/cm³
- Luster
- Vitreous to dull
- Crystal System
- Amorphous
Chemical Properties
- Chemical Formula
- SiO2 (with inclusions of cristobalite)
- Elements
- Si, O
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Snowflake Obsidian FAQs
How do I identify Snowflake Obsidian?
Snowflake Obsidian can be identified by its hardness of 5-5.5 on the Mohs scale, Black with white or gray inclusions color, Vitreous to dull luster, Amorphous crystal system. Look for these key characteristics when examining specimens.
What color is Snowflake Obsidian?
Snowflake Obsidian typically appears in Black with white or gray inclusions. Color can vary depending on impurities and formation conditions.
How hard is Snowflake Obsidian?
Snowflake Obsidian has a hardness of 5-5.5 on the Mohs scale. This gives it moderate hardness.