Two distinct minerals share the name: nephrite (amphibole group) and jadeite (pyroxene group)
Jade
Both jades are interlocking-fibre aggregates rather than single crystals, and that felted internal structure is why jade resists chipping and can be carved thin - toughness, which measures resistance to breaking, is not the same property as hardness, which measures resistance to scratching.
- Mineral family
Two distinct minerals share the name: nephrite (amphibole group) and jadeite (pyroxene group)
- Typical colours
Mid to deep greens, spinach through to pale grey-green and cream
- Hardness (Mohs)
Nephrite 6 - 6.5, jadeite 6.5 - 7 - both far tougher than that f
- Luster
Greasy to waxy, subtly resinous when polished
- Texture
Notably solid for its size, cool and slick to the touch, with a compact surface broken by paler veining and cloudy patches.
Caring for it
Wipe with a soft damp cloth and dry at once. Avoid acids, bleach and prolonged soaking, which can attack the surface polish, and take pieces off before applying oils or lotions.