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Use a dichroscope to determine Dichroism and Pleochrosim of transparent, colored gems as an aid to identify them. That is, viewing a pleochroic gem through the dichroscope will reveal the separating of the gem's single, outward color into two or more internal colors.
This instrument can also often distinguish Doubly Refractive or Birefringent gems from those that are singly refractive because such stones reveal only one color through the Dichroscope. That makes the Dichroscope especially helpful in separating colored Spinel and Garnets from other gems of similar color and properties, because Spinel and the Garnet family are among the few singly refractive gemstones.
We offer you the respected Gem-A brand out of the United Kingdom. Instructions included. Dimension is 1.7" long.
Instructions are visible in the extra photo above. Click on the thumbnail to enlarge.
This product typically ships within 1 business day.