Sphene
Titanite
What is Sphene?
Sphene, also known as Titanite, is a calcium titanium nesosilicate mineral. It is prized for its brilliance and fire, which is due to its high dispersion. Sphene crystals are often wedge-shaped and can exhibit a wide range of colors, including green, yellow, brown, and red. It is a gemstone that is relatively rare and sought after by collectors.
Optical Properties
- Refractive Index
- 1.843 - 2.050
- Birefringence
- 0.051 to 0.280
- Pleochroism
- Strong
- Optical Character
- Biaxial (+)
- Dispersion
- 0.051 (Very High)
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Sphene 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
- Yellow, green, brown, red, or black
- Hardness (Mohs)
- 5 - 5.5
- Rock tumbling
- With care
- Density
- 3.52 - 3.54 g/cm³
- Streak
- White
Chemical Properties
- Chemical Formula
- CaTiSiO5
- Elements
- Calcium, Titanium, Silicon, Oxygen
Also Known As
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Sphene FAQs
How do I identify Sphene?
Sphene can be identified by its hardness of 5 - 5.5 on the Mohs scale, Yellow color. Look for these key characteristics when examining specimens.
What color is Sphene?
Sphene typically appears in Yellow, green, brown, red, or black. Color can vary depending on impurities and formation conditions.
How hard is Sphene?
Sphene has a hardness of 5 - 5.5 on the Mohs scale. This gives it moderate hardness.