Nephrite
What is Nephrite?
Nephrite is a silicate mineral belonging to the amphibole group. It is a variety of jade, prized for its toughness and durability. It is typically found in massive form, exhibiting a fibrous or felted structure. Nephrite is known for its use in carvings, jewelry, and ornamental objects.
Optical Properties
- Refractive Index
- 1.600-1.630
- Birefringence
- 0.018
- Pleochroism
- Weak
- Optical Character
- biaxial (-)
- Dispersion
- 0.012
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Nephrite 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.
Nephrite Localities Map
See where Nephrite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
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Quick Facts
Physical Properties
- Color
- Green, white, gray, brown, black, yellow, and various shades in between. The color is often mottled or streaked.
- Hardness (Mohs)
- 6.0 - 6.5
- Density
- 2.90 - 3.03 g/cm³
- Streak
- White
Chemical Properties
- Chemical Formula
- Ca2(Mg, Fe)5Si8O22(OH)2
- Elements
- Calcium, Magnesium, Iron, Silicon, Oxygen, Hydrogen
Also Known As
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Nephrite FAQs
How do I identify Nephrite?
Nephrite can be identified by its hardness of 6.0 - 6.5 on the Mohs scale, Green color. Look for these key characteristics when examining specimens.
What color is Nephrite?
Nephrite typically appears in Green, white, gray, brown, black, yellow, and various shades in between. The color is often mottled or streaked.. Color can vary depending on impurities and formation conditions.
How hard is Nephrite?
Nephrite has a hardness of 6.0 - 6.5 on the Mohs scale. This gives it moderate hardness.