With special colour filters, some ornamental stones and gemstones can be distinguished by colour changes when looking at them. The Chelsea filter and the ruby filter are preferred for this gemstone examination. They are particularly suitable for differentiating between different gemstones viewed together, for example for checking a gemstone lot. The stones can be rough or polished – the different colour reactions when viewed through the respective colour filter are decisive.
Dichromatic filter to differentiate between different gemstones viewed together, makes colour changes visible
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Add to cartColour filter for assessing cut and unpolished red and pink stones, makes color changes visible
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Add to cartMagnifying glasses: Working distance: 270-300 mm, eye relief: 56-74 mm, field of view diameter: 50 mm, magnification: 2.3x.
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Add to cartProfessionalgemstone refractometer with high-end equipment and quality LED lighting. For high-quality measurement of the refractive index and for checking the authenticity and quality of stones
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