Translate

Thursday, June 15, 2023

Gemological Characterization Of Montana Sapphire From The Secondary Deposits

The insightful report by GIA researchers, Montana Bureau of Mines and Geology, and Earth's Treasury on gemological characterization of Montana sapphires from the secondary deposits at Rock Creek, Missouri River, and Dry Cottonwood Creek is a must read. I think the information will be useful for colored stone dealers, miners, gemologists, jewelry designers, and jewelers. Many thanks to Gems & Gemology.


Useful link:

No comments: