Mahogany Obsidian
A variety of Obsidian
What is Mahogany Obsidian?
Mahogany Obsidian is one of the most common varieties of this naturally occurring volcanic glass, recognizable by the mixture of black and brown Obsidian. Thanks to its properties, it is easily polished and sold in the form of tumbled stones. It is also used for cabochons and various carved objects and tools, such as knife blades.
Optical Properties
- Refractive Index
- 1.450-1.550
- Pleochroism
- None
- Optical Character
- Isotropic
- Dispersion
- 0.01
Discover Values
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Mahogany 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.
Mahogany Obsidian Localities Map
See where Mahogany Obsidian is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Health & Safety Information
- ⚠️Quartz, silica, crystalline silica and flint are non-toxic materials, but very fine dust containing quartz, known as respirable crystalline silicon (RCS), can cause serious and fatal lung disease. Lapidaries should exercise caution when cutting silica.
Quick Facts
Physical Properties
- Color
- Black, red, brown
- Hardness (Mohs)
- 5 - 5.5
- Density
- 2.35 - 2.6 g/cm³
- Streak
- Red-brown
- Luster
- Vitreous
Chemical Properties
- Chemical Formula
- SiO2
Identify Mahogany Obsidian Instantly
- Snap a photo, get instant results
- 6,700+ rocks, minerals & crystals
- Discover collecting spots near you
Mahogany Obsidian FAQs
How do I identify Mahogany Obsidian?
Mahogany Obsidian can be identified by its hardness of 5 - 5.5 on the Mohs scale, Black color, Vitreous luster. Look for these key characteristics when examining specimens.
What color is Mahogany Obsidian?
Mahogany Obsidian typically appears in Black, red, brown. Color can vary depending on impurities and formation conditions.
How hard is Mahogany Obsidian?
Mahogany Obsidian has a hardness of 5 - 5.5 on the Mohs scale. This gives it moderate hardness.