Faceted oval gemstones cut from synthetic corundum. Pure corundum, aluminum oxide, is colorless, but small amounts of chemical impurities create myriad hues. The red variety of gem quality corundum has a specific name: ruby. All other gem corundums are termed sapphire. Massive, non-gem corundum is used as an abrasive. Corundum is produced synthetically in the laboratory by a variety of methods. The synthetic (man-made) material has optical and other properties nearly identical to natural corundum.
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Details
Creative#:
TOP22084448
Source:
達志影像
Authorization Type:
RM
Release Information:
須由TPG 完整授權
Model Release:
N/A
Property Release:
No
Right to Privacy:
No
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