![](http://www.alamy.com/thumbs/6/A5968ED3-915F-4159-AB76-C57816D63819/DTF0RE.jpg)
Crystal, carving and treated blue topaz
An orange crystal, colourless carving of Queen Victoria's head and a heat-treated blue topaz gem of
Size: 1527px × 1940px
Photo credit: © Natural History Museum, London / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: birthstone, blue, carved, carving, collection, crystal, gem, gemstone, group, heat, mineral, nesosilicate, november, orange, orthosilicate, shot, silicate, studio, studioshot, topaz, treated, victoria