These are as you might expect - simply chunks of crystalline minerals that have been hewn directly from the ground, without recourse to polishing or embellishment. Gnenerally these are from what are known as massive deposits - i.e. minerals that have no well-defined crystalline structure.
Rough
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17F061
Silicon: raw chunk (USA - Silicon Valley)
This is a raw chunk of Silicon, which has been processed for use in the electronics industry. This is an amazing metalloid, which is unusual in that...
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£6.00
Displaying 43 to 45 (of 45 Products)