Recalculation of the assessed value based on the benchmark of finely calssed chalcopyrite concentrate which is sourced from the world-class Shigar Valley Mine. What a beautiful gemstone this is – the material used is topaz with a touch of quartz and feldspar and it is great to see such stones without any polishing. Origin: The second one is Shigar Valley Mine in Pakistan. Weight: 187g Dimensions: 9x3 cm Origin: Shigar No heated no treated 100 % Natural