Foldable Chelsea Jadelite Filter for Gem, Emerald, Identification tools CLMG-7300 eTop
  • Foldable Chelsea Jadelite Filter for Gem, Emerald, Identification tools CLMG-7300 eTop
  • Foldable Chelsea Jadelite Filter for Gem, Emerald, Identification tools CLMG-7300 eTop
  • Foldable Chelsea Jadelite Filter for Gem, Emerald, Identification tools CLMG-7300 eTop
  • Foldable Chelsea Jadelite Filter for Gem, Emerald, Identification tools CLMG-7300 eTop
Цена: $22,90
В наличност
Марка: eTop
На склад: Hong Kong
Доставка: 14 + days
Код на продукта: CLMG-7300
Тегло: 0.000
Цена на едро:

Foldable Chelsea Jadelite Filter for Gem, Emerald, Identification tools CLMG-7300

It 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, soudEmeralds) retain a green appearance. Chelsea is definitely a helpful tool in identifying certain red, blue and green stones.

  

In rare cases certain emeralds, most notably from South Africa, may not show any pinkish color at all. A synthetic emerald react the same as a genuine one. Rubies (both genuine and synthetic) appear brilliant red under the filter. Synthetic blue spinel appear yellow-orange or pink while aquamarine and sapphires appear green or green-grey. With a Chelsea filter, a dichroscope, a spectroscope, and a 10x loupe, a good gemologist should be able to positively identify over 85% of the gemstones out there.

  

With Chelsea filters you can differentiate the genuine emeralds from the fake once, as well as checking the authenticity of aquamarine and sapphires with comfort and ease.

  

Features :

  • Offers a year of warranty  The most useful tools for a variety of gemstones 

  • Equipped with a Glass Filter which gives better clarity 

  • Reduces distortion and provides better protection from humidity 

  • Heavy Duty and very reliable and transportable 

  • Doesn't need to hold it closer to the stone,

  • even items in showcases can be examined providing they are lit by strong lights

 

Specifications 

  • Filter Diameter : 20mm

  • Body : Made of metal

 

 

How to use the Chelsea Filter:

Just hold the Chelsea Filter close to your eye, place your green (or blue) gems under a strong electric light. There is no need to hold the filter close to a stone, even items in showcases can be examined providing they are lit by strong lights.

 

The results are as follows:

 

Type of Stone or Gemstone
Colour Shown through Filteror Apparent Color
   

Natural Emeralds

Pinkish-red

Synthetic Emeralds

More intense red

Emerald Simulants

Green

Synthetic Green Spinel

Green

Peridot

Green

Green Sapphire

Green

Green Tourmaline

Green

Chrome Green Tourmaline

Red or pink

Demantoid Garnet and
Green Zircon

Red but with a negative reading on the refractometer since no total internal reflection occurs

Aquamarine, Blue Topaz 
and Zircon

Green

Lapis Lazuli

Weak brownish-red

Cobalt Glass

Deep red

Natural Blue Spinel

Red

Synthetic Dark Blue Spinel

Red

Natural Cobalt Blue Spinel

Red

Synthetic Light Blue Spinel

Pink-orange

Blue Sapphire

Dark green (almost black)

Blue-Purple Color Change Sapphire

Usually appears red

Most treated Jade

Reddish

Natural Jade

Green

The Chelsea filter is one of the most useful tools for a variety of gemstones. With a Chelsea filter, a dichroscope, a spectroscope, and a 10x loupe, a good gemologist should be able to positively identify over 85% of the gemstones out there.

 

 

 

 

Set includes :

  • 1 x Chelsea Filter

  • 1 x Synthetic Leather Carry Case

  • Standard Packaging Box

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