Imperial topaz gem crystal from Pakistan

Imperial topaz gemstones
 
100% natural, jewelry-quality!
It deserves its place in the finest collections or showcases.
 
 
    Origin: Pakistan
    Size: 2.1cm by 1.5 cm by 1.2 cm for 8gr 
    Chemical Formula: Al2SiO4(F,OH)2
    Crystal system: Orthorhombic
    Hardness Mohs' scale: 8
 
 
Definition: Topaz is a mineral belonging to the silicate group.