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About Tanzanite Filter/Dichroscope Filter
Characterization and identification of Gems by the use of color filters has always been an appealing approach because of its affordable simplicity and the ease of examining multiple specimens. Featured here is a combination Color Filter and "luggage tag-style" Dichroscope Filter (facsimile shown in 2nd photo) which allows one to distinguish genuine Tanzanite from all of its imitations, such as blue synthetic Forsterite.
