Folding Dichroscope and CHELSEA FILTER

Two testers in one.

The dichroscope is a folding Dichroscope. The London Dichroscope is praised for its ease of use and simple assessment of dichroic and trichroic colours seen in rough or cut gemstones.

The Chelsea Filer is a Colour Filter and allows transmission of both deep red and yellow-green wavelengths of light. Useful for separating stones of a similar colour.