Amethyst Pyrite and Galena from Bulagaria

Amethyst with Pyrite and Galena from Chala Mine, Bulgaria.
 
 Prismatic crystals with magnificent colors unlike many pieces from this provenance!
 Top Amethyst which deserves its place in the best collections or showcases !
 
 Size: 21cm by 16.5cm by 6.5cm for 2kg319
 Chemical formula: SiO2
 Crystal system: Trigonal
 Hardness Mohs scale: 7
 
 Definition: It is a variety of purple quartz , found throughout the world ( Amethyst from Brazil, Uruguay, Africa, Mexico, Bulgaria, France …). This pronounced purple color is due to silicon dioxide . It is found in a very translucent to very dark format. We will find amethyst as an element of choice in jewelry and classified as a fine stone according to the quality of the crystals . It is found in various forms: Geodes of Amethysts , Druses or clusters of Crystals , Crystal , pebbles raw or polished, Spheres or Eggs , sometimes also in slices .