Corundum var sapphire.
Pennycross, W of Loch Scridain, Isle of Mull, Soctland, UK.
Crystal in background is 1 mm across. 37 mm specimen hosts many others, to 4 mm. (Author: Ru Smith)
Dimensiones: | 800 x 610 |
Tamaño fichero: | 46.33 kbytes |
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