A short humorous introduction to geology and mineral properties & identification, including definitions and illustrations of hardness, fracture, cleavage, chemical reactivity, color, streak, and magnetism.
Gems & Gemmological Institute of Pakistan-Peshawar (GGIP) Hamid Usman Khattak (HUK) Accredited Gemologist from AIGS Bangkok, Thailand. Feel free to contact:0092-323-9521135 Video Rating: 5 / 5
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