Pietersite or Hawk’s-eye is the blue form of tiger’s-eye, both opaque polycrystalline forms of quartz. With a hardness of 6, excellent toughness and good stability, they are suitable for use in rings, pendants, earrings, bracelets, brooches and cufflink, although abrasion and wear may occur in rings and bracelets, although abrasion and wear may occur in rings and bracelets.
Hardness – resistance to scratching and wear
Stability – resistance to alteration by light, heat or chemicals
Toughness – resistance to fracture, cleavage or cracking
Please note you will receive the stones in the photograph