Synthetic minerals[16 from 38] Silicon Monocrystalline bevel dark- grey with tarnish
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The name, a brief visual description:
Silicon
Monocrystalline bevel dark- grey with tarnish
Sample size:
Crystal. 3,6*3,6* 2,1 cm. 0,024 kg.
Place of sampling:
Krasnoyarsk factory of non-ferrous metals