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About Ruby/Aqua 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 set that includes a Ruby Filter for discriminating among red stones such as Ruby, Spinel, Tourmaline, and Garnets, along with an Aqua Filter for differentiating blue gemstones, separating Aquamarine from Topaz and other blue gems.
