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1) Chelsea (Jadeite) Filter:

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. Just hold the filter close to the eye with the stone or stones (for a number of stones can be examined at one time) 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, soude Emeralds) retain a green appearance. 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 will 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.

This Chelsea color filter has a glass filter which gives better clarity, reduces distortion and provide better protection from humidity. 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.

Specifications:

• Filter Diameter: 20mm
• Body: Made of metal

Accessory included:

Leather Carry Pouch

Warranty: 2 years warranty (24 months)

2) Jeweler's Loupe 10x Triplet Magnifier Lens :

Made with precision, HEAVY DUTY, HIGH QUALITY and one of the most important tools used to inspect gemstones and other jewelry. With its special OPTICAL GLASS with 10x powerful magnification lenses, objects appear to be larger and reveal tiny details that couldn't seen with normal vision even the very smallest detail into sharp focus such as tiny crystals, trace minerals, grain surfaces, and microfossils. It comes with a Cushioned Sturdy storage case for protection and ease of carrying anywhere.

Usage & Applications:
It can be used in a number of different industries, notably in jewelry trade, photography, printing, laboratories, etc. Used for many soldering applications to inspect a printed circuit board with small surface components on it, to carefully analyze how ink lays on paper while register film separations to one another, to check registration of colors, estimate dot-gain, and diagnose issues with roller pressure and chemistry based on the shape of individual dots and rosettes, and to review, edit or analyze negatives and slides on a light table, for viewing the ground glass image to aid focussing, for a real close-up inspection of Gems, Diamonds and Minerals, circuit board films, reading fine prints, stamps, jewelry and coins, photos, aid to collectors, scientists, hobbyists, and antiques or any other small intricate items.

Features:

• Uses OPTICAL GLASS
• With 10x magnification
• Size: Diameter 21mm and 18mm available
• Useful tool for a variety of gemstones
• Reliable and transportable
• Durable & built to last long, indeed a value for your money device
• Complete with FREE sturdy carrying case with cushioned compartments that fits the device perfectly, an added protection for the device.

Accessory included:

• Sturdy leather carrying case with cushioned compartments

Warranty: 2 years warranty

Photos below show 3 options: Black, White and Gold color, please leave a message at check out to let us know which size you prefer. If you don't mention which one you want, we will ship a random one.

3) Diffraction Spectroscope

Handheld spectroscope allows you to read a gemstone's spectral signature. How to use: view the colour of a gemstone, either by shining a light (pen-torch) through the stone into the spectroscope if the stone is transparent, or by viewing its reflected light if the stone is opaque. What you see: a spectrum (rainbow) which might be interrupted with black or white lines, it is the pattern of these lines you must learn to recognize. For the gemmologist: best at detecting iron and chromium. Exactly what i needed!------a feedback from a GIA student

Features: Heavy-duty and lightweight with its aluminum construction Precise, Easy and very convenient to use Durable, built to last long A top quality instrument giving a brilliant spectrum. Specifications: Length: 55mm Diameter: 18 mm Material:Calcite, Aluminum (Heavy Duty) Made in one part, same type like GIA's spectroscope Inside Instruction: Diffraction Type Accessory included: Leather Carry Pouch Warranty: 2 years warranty (24 months)

We also have prism type spectroscope, please copy item number 320403244106 to your ebay search bar to check it out, the new page has explanation of the difference between diffraction spectroscope and prism spectroscope