Benitoite,a barium titanium silicate mineral,occurs in crystals suitable for cutting uniquely in San Benito County,California. The mineral itself is extremely rare,and all the cut stones in existence probably would not fill an 8 ounce glass. Most cut gems are under one carat,and stones over 2-3 carats are seldom produced. These gems weigh about 1 carat each | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Arem, Joel |
Bildgröße: | 3845 px × 2550 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: |
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