Nephrite is found in "Afghanistan" and possesses several physical and chemical properties, including:

Physical properties

• The shape is mass
  
• Silicate minerals group
  
• White scratching
• Hardness 6.5
• The color is cream / pale green / dark green
• Not radioactive
• Transparent to opaque
• The sparkle is matte / waxy

Chemical properties

• Refractive index 1.66 / 1.63
• The density is 2.9 / 3.4
• Mono tilt crystals system
• The chemical formula is pyroxene