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Chelsea Filter – GemaxRs. 4,500.00
Some gemstones appear to change colour when viewed through the Chelsea Colour Filter. This colour change helps identify many gemstones, distinguishing ruby from paste; distinguishing garnet (though not all garnets) emerald and aquamarine from paste.
The Chelsea Filter also distinguishes many manmade stone such as cobalt-blue glass and blue synthetic spinel from natural blue stones.
Jadeite FilterRs. 3,000.00
Jadeite Filter is a very useful device in identifying colored stones. Similar to the Chelsea Filter with a slightly less saturated filter color making it easier to see the color of stones. It detects some of the dyed and treated stones and it accurately distinguishes the real nature of the gems from synthetic.