URL details: cigem.ca
URL title:
Gemology World – Canadian Institute of Gemmology
URL description:
Dedicated to research and advance in education in the field of gemmology. Gemlab Research & Technology. Gemological Books and Instruments. Professional Development.
URL keywords:
absorption, absorption spectra, accredited, accredited gemologist, adventurine quartz, agate, alexandrite, almandine, amazonite, amber, am
URL last crawled:
2022-06-12
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