Nephrite

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Nephrite
Chemical composition Complex Ca Mg/Fe (calcium magnesium/iron) silicate
Crystal system Monoclinic
Habit Polycrystalline
Fracture Splintery
Hardness 6.5
Refractive index ±1.62
Specific gravity 2.90 - 3.20
Lustre Greasy to vitreous

Enhancements

Common enhancements to nephrite:

  • Fracture filling - wax - conceal cracks and fractures
  • Coatings - wax - to improve luster