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Digital Refractometers

This topic contains 3 replies, has 3 voices, and was last updated by Profile photo of gemsbymark gemsbymark 2 weeks ago.

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  • #233511
    Profile photo of adam333
    adam333
    Participant

    Does anyone have experience with digital refractometers? RE their accuracy and best brand? I am needing one to complete the IGS Gemmology course.

    #234031
    Profile photo of gemsbymark
    gemsbymark
    Participant

    Even GIA only requires the same type of refractometer that’s been used since the 1880s. They are just in newer cases these days and you really should learn to use it, to see shade cutoffs and learn to calculate birefringence. High tech toys are nice…but the industry standard is the standard RI Liquid and Hemi cylinder Refractometer. Good luck with your tests.

    #234150
    Profile photo of dlosee-2-2-2
    dlosee-2-2-2
    Participant

    I failed the test and the hardest part was the refractometer. I’m taking the test again and am determined to conquer the refractometer, have new fluid and batteries so hope that helps.

    #234171
    Profile photo of gemsbymark
    gemsbymark
    Participant

    Do you have a monochromatic light source in addition to your white light?

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