metamorphic
Jadeite and Nephrite (Jade)
Sodium Aluminum Silicate (Jadeite) / Calcium Magnesium Iron Silicate (Nephrite)
Hardness: 6.0–6.5 (Nephrite), 6.5–7.0 (Jadeite); Color: shades of green, black, lavender, white; Luster: vitreous to greasy; Crystal Structure: Monoclinic; Cleavage: splintery or fibrous fracture; Specific Gravity: 2.9–3.3.
- Hardness
- 6
- Color
- shades of green, black, lavender, white
- Luster
- vitreous to greasy
Identified More metamorphic →
Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness: 6.0–6.5 (Nephrite), 6.5–7.0 (Jadeite); Color: shades of green, black, lavender, white; Luster: vitreous to greasy; Crystal Structure: Monoclinic; Cleavage: splintery or fibrous fracture; Specific Gravity: 2.9–3.3.
Formation & geological history
Formed in high-pressure, low-temperature metamorphic environments, typically in subduction zones where oceanic plates meet continental plates. These stones are often found in serpentinite rocks.
Uses & applications
Primarily used for high-end jewelry (cabochons, beads), decorative figurines, or historical artifacts and ceremonial items.
Geological facts
Jade is known as the 'Stone of Heaven' in Chinese culture. It is exceptionally tough due to its interlocking fibrous structure, making it harder to break than diamond despite having a lower Mohs hardness.
Field identification & locations
Identify by its 'greasy' feel when polished and its cold temperature to the touch. It is often found as water-worn boulders in rivers near metamorphic belts. Burma (Myanmar) is the primary source of high-quality Jadeite.
More like this
