gem filter

Gem Accessories Tool Metal Black Chelsea Filter Lightweight For Jewelry FCF-25 Specifications: 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. Technical Parameter material Optic glass Function To check if the color gem...

...Gem built-in Led jewelry Hand-Held refractometer Product description The Gem Refractometer is an important instrument which measures the refractive indices of stones. It has a pull out eyepiece and a high quality lens that gives clear focus and reading. Provides readings from 1.31 to 1.81. Supplied with polarizing filter, monochromatic filter...

... is diffracted into a star-shaped star Type: star filter Jewelry :It will make soft stars appear in the highlights of gems, glass or metal, making the picture shine. Flashing water drops:The shimmering water at the bottom of the water drops adds a touch of

.../N2 • Receiver sensitivity: -28 dBm • Wavelengths: US 1260-1280 nm, DS 1575-1580 nm • Wavelength blocking filter (WBF) • Flexible mapping between GEM Port and TCONT • SN/Password/SN+Password/Bi-directional authenticatio

... dBm • Wavelengths: US 1310 nm, DS 1490 nm • Wavelength blocking filter (WBF) of G.984.5 • Flexible mapping between GEM Port and TCONT • GPON: consistent with the SN or password authentication defined in G.984.3 • Bi-directional FEC • SR-DBA