Finally i bought Gem-A refractometer model no: REF0006. it has small scale therefore i feel very difficulty to read r-index . for cabochon doesnt work this , what shall i do ? i think i have lost my money !!!!!
Joined: Sun Oct 16, 2005 12:22 pm Posts: 21602 Location: San Francisco
Have you ever used a refractometer before? Are you sure you are using it properly? I own one of these GemAs. No problems and yes you can do spot readings with them.
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