Neptunite
A variety of Neptunite Group
What is Neptunite?
The discovery of neptunite is a relatively recent occurrence, dating back to just over a century ago. It's not one of the most common minerals by itself, but it mingles with Benitoite, the state gem of California. Almost all specimens of neptunite come from one area of California and occasionally Canada or Greenland.
Etymology & Origins
The mineral is named for Neptune, Roman god of the sea because of its association with aegirine from Àgir, the Scandinavian sea-god.
Healing Properties
Neptunite is said to be a shield that protects the user from negative forces and helps them to meet the challenges of everyday life. It is believed that it opens the Third Eye and Throat chakras for enhanced psychic abilities and communication with other realms. It is also believed to aid a person when speaking their truth, to enhance clarity and build confidence.
Optical Properties
- Refractive Index
- 1.692-1.734
- Birefringence
- 0.029-0.045
- Pleochroism
- Pale yellow, yellow-orange, orange to red-brown
- Optical Character
- Biaxial positive
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Neptunite 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.
Neptunite Localities Map
See where Neptunite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Associated Chakras
Quick Facts
Physical Properties
- Color
- Black
- Hardness (Mohs)
- 5 - 6
- Density
- 3.24 g/cm³
- Streak
- Cinnamon-brown
- Luster
- Vitreous
- Crystal System
- Monoclinic
Chemical Properties
- Chemical Formula
- Na2KLiFe2+2Ti2Si8O24
- Elements
- Fe, K, Li, Na, O, Si, Ti
Also Known As
Identify Neptunite Instantly
- Snap a photo, get instant results
- 6,700+ rocks, minerals & crystals
- Discover collecting spots near you
Neptunite FAQs
How do I identify Neptunite?
Neptunite can be identified by its hardness of 5 - 6 on the Mohs scale, Black color, Vitreous luster, Monoclinic crystal system. Look for these key characteristics when examining specimens.
What color is Neptunite?
Neptunite typically appears in Black. Color can vary depending on impurities and formation conditions.
How hard is Neptunite?
Neptunite has a hardness of 5 - 6 on the Mohs scale. This gives it moderate hardness.