PRASIOLITE, the green variety of quartz

VARIETY INFORMATION:

• VARIETY OF: Quartz , SiO 2 .
• USES: Gemstone and ornamental stone.
• COLOR: a pale lime-green
• INDEX OF REFRACTION: 1.544-1.553
• BIREFRINGENCE: 0.009
• HARDNESS: 7
• CLEAVAGE: none
• CRYSTAL SYSTEM: trigonal
• For natural prasiolite mineral specimens see our For Sale or Sold lists