The dichroscope is an important pocket instrument used in the field of geology, and can be used to test transparent gemstones(crystals). Experienced geologists using pleochroism can successfully detect gemstones from other artificial stones using this instrument.


Calcite Dichroscope

There are two types of dichroscopes available: calcite and polarizing. Of the two, calcite gives better results and is widely used by experienced gemologists.

Polarizing Type

With this type of dichroscope, only one pleochroic color can be seen at a time. This makes the process time-consuming and difficult, though it is the most economical way to get results.

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  • dichroscope — ⇒DICHROSCOPE, subst. masc. PHYS. Appareil permettant d observer le phénomène de dichroïsme. Une lame de l hypersthène du Labrador (...) donne au dichroscope une image rouge hyacinthe et l autre bleu verdâtre, noir grisâtre, verdâtre ou brunâtre… …   Encyclopédie Universelle

  • Dichroscope — Di chro*scope, n. [Gr. di = di s twice + ? color + ? to view.] An instrument for examining the dichroism of crystals. [1913 Webster] …   The Collaborative International Dictionary of English

  • dichroscope — [dī′krə skōp΄] n. 〚< Gr dichroos (see DICHROISM)〛 an optical instrument used to study dichroic crystals, solutions, etc. * * * …   Universalium

  • dichroscope — [dī′krə skōp΄] n. [< Gr dichroos (see DICHROISM)] an optical instrument used to study dichroic crystals, solutions, etc …   English World dictionary

  • dichroscope — noun Date: 1857 an instrument for examining crystals for dichroism …   New Collegiate Dictionary

  • dichroscope — instrument for examining crystals for dichroism Scientific Instruments …   Phrontistery dictionary

  • dichroscope — di·chro·scope …   English syllables

  • dichroscope — /ˈdaɪkrəskoʊp/ (say duykruhskohp) noun an instrument for testing the dichroism (or pleochroism) of crystals. {Greek dichroos of two colours + scope} …   Australian-English dictionary

  • dichroscope — …   Useful english dictionary

  • International School of Gemology — The International School of Gemology (ISG), founded in 2004 by Robert James FGA, GG, started as an Allied Gem Tutorial centre for the Gemmological Association of Great Britain. The relatively new organization holds membership in the AGTA,… …   Wikipedia

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