Large and fine faceted blue topaz gemstone,a fancy pearshape weighing about 115 carats. Although natural blue topaz of this color does exist,the vast majority of such stones are colored artificially by subjecting white (colorless) topaz to irradiation and heat | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Arem, Joel |
Taille de l’image : | 3808 px × 2550 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : |
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