Dichroscope and "Chelsea Filter", folding More sophisticated diamond gauges I like it not having

I like it not having an extra inset lens

OVERALL SIZE

carats or grains)

DETAIL / MAGNIFICATION

Dichroscope and "Chelsea Filter", folding More sophisticated diamond gauges I like it not havingSummary Two testers in one. The dichroscope is the same as ref. dichroscope, folding. Instructions are not included with this item. The Chelsea Filer is the same as ref. chfilt (except that our ref. chfilt is the original English filter, as designed at the Chelsea College of Science and Technology in 1934; this version was designed in China more recently). Instructions not included with this item. Is it easy to use? Yes. Limitations & Disclaimer All