Chelsea Filter
This filter is designed to transmit only deep red and yellow-green light (best obtained under strong electric light).
Just hold the filter close to your eye and look at the stones. Multiple stones can be viewed at once.
It is helpful with identifying certain red, blue and green stones.
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.
If you want to know more products, please visit our website www (dot) .
Send product request
Other supplier products
Fiber optic connector cleaners ST2-001 | Model: ST2-001 Description: Fiber optic connector cleaners utilize a specially formulated dry cloth for thorough and efficient cleaning of fibe... | |
Bechn Type Polariscope -T | Polariscopes are used to quickly and easily check if gemstones are single or double refracting. It Is very useful in identifying Moissanite and de... | |
Pocket digital refractometer PDR28S | Guarantee: Offer 1 years warranty Features: MODEL:PDR28S SCALES:SALINITY,REFRACTIVE INDEX RANGE:SALINITY 0-28% REFRACTIVE INDEX 1.3330-1.3900 ... | |
4 in 1 Soil Moisture Meter PHS0012 | 4 in 1 Soil Survey Tester can test pH Value of soil, Moisture,Temperature(°C & °F) and Environment Sunlight Intensity by using a probe... | |
0-32% Brix Beer Brewing Refractometer RSG-100ATC | This hand-held optical refractometer measures the density of sugars in the solution and gives you an instant gravity readings at any point during t... |
Same products
Xenon Arc Chamber | Seller: Xi’an LIB Environmental Simulation Industry | LIB xenon lamp testchamber can be used for aging tests such as color fastness and cracking of coa... | |
Water Spray Test Chamber | Seller: Xi’an LIB Environmental Simulation Industry | LIB Water Spray Test Chamberis used for the ingress protection tests involves immersing the equip... | |
Salt Spray Chamber | Seller: Xi’an LIB Environmental Simulation Industry | LIB salt spray chamber simulates the salt fog marine climate, is used in the salt spray corrosion... | |
Salt Fog And So2 Corrosion Chamber | Seller: Xi’an LIB Environmental Simulation Industry | LIB salt fog machineand SO2 corrosion chamber generates the different environment conditions that... | |
Reach-In Environmental Chamber | Seller: Xi’an LIB Environmental Simulation Industry | LIB reach in stability chamberssimulate different environmental conditions such as high temperatu... |