Rough Blue Topaz
Assortment of blue topaz in its rough state prior to cutting. Although natural blue topaz does exist, the vast majority of such stones are colored artificially by subjecting white (colorless) topaz to irradiation and heat. This treatment is done prior to
Picture No
13626095
Media ID
43168090
Size
3851px x 2550px
(4.4MB)
Credit
Joel Arem /Science Source/ www.ardea.com
Category
NA
Availability
Available in UK only. No agents
Ardea Picture Library
Picture No
13626095
Contributor Ref
SCS-90075329
