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Grand Index Solution Enterprise Limited

China Manufacturer with main products: Gemological Instrument, Balance, Fiber Inspection Tools, PH-TDS Meter and Magnifier, Light Source, Refractometer, Precision Measurement and...

Home  >Products Catalog > Gemological instruments > Gem identification tool Chelsea Filter (GI-7300)

Gem identification tool Chelsea Filter (GI-7300)

Supply Ability: 5,000 Piece/Pieces per Month
Shipping: IN 3 days after receiving your payment
Payment Terms: T/T(Bank Transfer), Western Union, PayPal

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Place of Origin: HK in Hong Kong

Specifications

The Chelsea Filter is an essential device in 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. Testing stones is very simple, just hold the filter close to the eye with the stone or stones (stones can be examined simultaneously) receiving as much light as possible. Under these conditions, Emeralds (absorbing in the yellow green) usually appear distinctly red or pinkish in colour, the actual tint varying from merely pinkish in the case of pale stones, to a rich almost ruby red for better coloured specimens.

On the other hand, most imitations of the genuine stone (pastes, doublets, sou meralds) retain a green appearance.< XML:NAMESPACE PREFIX = ST1 />Chelsea is definitely a helpful tool in identifying certain red, blue and green stones.

Service Process

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    After paying a deposit, if the purchasing order is not completed because of unsatisfied ECVV services, ECVV will refund your deposit.

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