From Sherlovaja Gora, Transbaikal Region, Russia
Aggregate of lustrous colourless to light blue Topaz xls up to 2.5 cm.
Yellow colour is caused by iron oxide. Typical sample of one of the 
most famous Topaz localities in Russia
Dimensions 5.5 x 5 x 2.5 cm ; Largest crystal 2.5 cm
Weight 100g