Is the color of gems determined by stones? Genus components-titanium, vanadium, chromium, manganese, iron, cobalt, nickel, copper, and contain these? Is it stone color or gem color? Genus components-titanium, vanadium, chromium, manganese, iron, cobalt, nickel, copper, and contain these? Gems belonging to elements will have their own under the spectrometer? Absorption line at the same position. Will the gems of elements be different under the spectrometer? Absorption line at the same position. Do you know about this? , but? What does Cowan know? , but? Chapter 8 of the Jewelry Appraisal Law in Mr. Anderson's book, which is very detailed? Ming. Chapter 8 of the Jewelry Appraisal Law in Mr. Sen's book is very detailed. Ming.

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