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Use a dichroscope to determine Dichroism and Pleochrosim of colored gems as an aid to identify them.
This instrument can often distinguish Doubly Refractive or Birefringent gems from those that are singly refractive. 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.
This product typically ships within 1 business day.