Topaz
Locality:Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
(https://www.mindat.org/loc-24345.html)
Formula:Al2(SiO4)(F,OH)2
Colour:Colourless, white, pale blue, light green, yellow, yellowish brown, or red
Lustre:Vitreous
Hardness:8
Specific Gravity:3.4 - 3.6
Crystal System:Orthorhombic
