Transparent or opaque? These are crystals of the antimony ore stibnite (antimony sulphide). While they are grey and opaque to our eyes, they are actually transparent to infra-red light.
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Details
Creative#:
TOP10860538
Source:
達志影像
Authorization Type:
RM
Release Information:
須由TPG 完整授權
Model Release:
No
Property Release:
No
Right to Privacy:
No
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