Black Tool Accessories Metal Chelsea Filter Lightweight For Jewelry
Color filters have many uses in gemology. The chelsea filter(CF) is
the most prominent of then.
Fable brand Chelsea Filter with:
1. With Excellent Spectralite Color Filter.
2. Fastness and Non-lackness.
3. With Leather Package.
To check if the color gem stone with dying color
The renowned CHELSEA FILTER is a must have for identifying colored
stones. While it was originally intended to rapidly differentiate
between genuine Emeralds and the pastes and doublets which resemble
them, it also is a valuable aid in identifying other colored
stones, as well. Designed to transmit only deep red and
yellow-green light, and the best results are obtained when stones
are examined under a strong electric light.
Chelsea filters are primarily used for spotting fakes added to
colored stone parcels and mixed in jewelry, and to differentiate
emerald from emerald look-alikes, it is also useful for checking
aquamarine and sapphires. With the filter emeralds usually appear
distinctly red or pinkish in color, while most imitations remain
green. In rare cases certain emeralds, most notably from South
Africa, may not show any pinkish color at all. A synthetic emerald will react the same as a genuine one.
Applications: Gemological Laboratory, Gemology school, Jewelry