Gemological Instruments
A collection page of Otto Frei
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Products
33
Active ads
0
Depth
Click depth 1
Published
2022/08/18
About
Gem identification instruments and supplies: refractometers with 1.81 RI liquid, polariscopes, calcite and London dichroscopes, Chelsea and ruby filters, darkfield loupes, and GemOro Elite microscopes. Stone handling too: shovels and holder rings, diamond sieves, CZ master stone sets, parcel papers in Belgium white and Euro blue, plus appraisal books, memo books, and forms.