Gem Cleaning Cloth

The Gem Cleaning Cloth is made from a lint free microfibre and has a stitched edge to prevent fraying.

Belomo Hand Lens

The hand lens has x10 achromatic triplet antireflection lens with a diameter of 21mm and a linear field of view 17mm with a focal distance of 28mm in black metal casing of very high manufacture. Made in Belarus.

Belomo Hand Lens 15x

The hand lens has 15x triplet loupe. Made by the Balarusian Optical Mechanical Association.

Belomo Hand Lens 20x

The hand lens is x20 quadruplet loupe. Made by the Balarusian Optical Mechanical Association.

Hand Lens

The Hand Lens (loupe) has 10x magnification with a viewing field of 20.5mm. It has a triplet aplanatic and achromatic lens to eliminate spherical and chromatic aberration when viewing gemstones and a rubber grip for added comfort.

Gem-A Conoscope Rod

A simple instrument used to observe interference figures in gemstones such as quartz, the Conoscope Rod is used in conjunction with a polariscope to determine whether the stone is uniaxial or biaxial. Strain-free spherical glass lens 59mm x 10mm x 10mm.

Tweezers

Tweezers are made from a satin finish stainless steel to help eliminate reflections inside a viewed gemstone and have a slide lock grip. The pincers are grooved to allow a gemstone girdle to sit safely without flicking out. They come in two sizes, a medium and fine point depending on whether you need them for larger stones (4mm and above) or smaller stones and diamonds (below 4mm).

Diamond Tweezer no lock

Tweezers are made from a satin finish stainless steel to help eliminate reflections inside a viewed gemstone, no lock grip. The pincers are grooved to allow a gemstone girdle to sit safely without flicking out. They are medium point for smaller stones and diamonds (below 4mm).

Dichroscope

The Dichroscope has a black powder coated aluminium barrel containing a train of transparent calcite prisms to split light into opposed rays and compare any pleochroic colours of a transparent gemstone.

London Dichro-loupe Gemax

Chelsea Filter

The Chelsea Filter has a transparent filter, which allows the transmission of both deep red (690nm) and yellow-green (570nm) wavelengths, housed in a white powder coated aluminium housing.

OPL Spectroscope (small)

This OPL Spectroscope is the diffraction grating kind providing a sharp spectra with relatively low intensity light. The diffraction grating is housed in a sandblasted finish aluminium case with powder coated black ends.

OPL Spectroscope (large)

Fixed slit & fixed focus, with a 600 lines per millimetre fine quality diffraction grating. OPL “Teaching” Diffraction Grating Spectroscope are similar to but larger than the Pocket model. This spectroscope is ideal for laboratory or classroom use. Constructed of stainless steel & black acetol, 104mm long, 25mm wide, weight 110 grams, packed in a distinctive black plastic tube.

OPL Book

A student friendly approach to spectroscopy, with detailed descriptions, photos, diagrams, practical examples, advice and just a touch of theory. As reviewed by Michael O’Donoghue in the October 2003 issue of “The Journal of Gemmology”. This little book has taken the gemmological world by storm and is now regarded as an essential part of a gemmology students library.

Acrylic Colour Filters

A set of 6x acrylic colour filters in Red, Yellow, Green, Light Blue, Dark Blue and a frosted “White” (diffuser). Insert a colour filter between the light source and the stone to enhance both visibility of features in stones and the observation of spectra. As an example, curved colour banding difficult to see in yellow Verneuil synthetic sapphire becomes more apparent when using the blue colour filter over the light source (the complementary colour to yellow). Coloured filters enhance features in coloured stones, whilst the frosted white filter may enhance features in colourless stones. In spectra, the colour filters can enhance lines that may otherwise be missed – examples can be found on pages 36 & 37 of A Student’s Guide to Spectroscopy by Colin Winter, 2nd edition, OPL Press.

Digital Gauge

The Digital Gauge measures 0-26.40mm (about 1 inch) in 1/100th of millimeter increments and is switched on or off at the hit of a button. It can also switch between imperial and metric measurements and has a zero reset button. The head is a ‘Leverage’ style allowing measurements to be taken in three ways, including measuring inner and outer diameters. It can be used with one hand and takes a 1.55v SR44 battery.

Coloured Pens

These pens are for use in plotting inclusions in Diamond Grading. Green for external features and red for internal features. They are sold as a set of two.

RI Fluid (1.81)

The Gem-Master 1.81 Refractive Index liquid contains 10 grams (3.2mls) of liquid. It's safer than other liquids on the market because of the protective stopper on the bottle that prevents spillage. The labels are in full accordance with current international health and safety regulations.

Leather Zip Case

The Leather Zip Case is made from black reinforced leather to protect its contents and has many elastic compartments and an internal pouch to hold a basic set of gemmological tools. It comes with a full length zip and wrist strap and is embossed with the GAA logo.

Student Gem Kit

This kit contains many of the essential hand tools you will use throughout your gemological studies and will need in the field. Included are the Gem Cleaning Cloth, Belomo 10x hand lens, lock-in Tweezers (medium point), Dichroscope, large OPL Spectroscope, and Leather Zip Case.*

Diamond Grading Kit

This kit contains the essential items needed to complete the Practical Diamond Grading course and well after for grading and assessing diamonds. It contains Tweezers, Belomo hand lens, Cleaning Cloth, Digital Gauge, Red and Green Pencils and Leather Zip Case.

Base Light for Folding Polariscope

Ideal for travelling, use with the folding polariscope.

Folding polariscope

Ideal for travelling, folding polariscope. Can also use with microscope.

Polariscope

Gemax Polariscope (table)
*Full visible light spectrum (400nm-700nm)
*A CONOSCOPE is included
*With a table glass (40mm diameter) over the lower polarizer
*1x 15W replacement bulb
*Size 8cm(w) x 12cm(l) x 14cm(h)

Portable LED Polariscope

Poloriscope (Handle) * NEW * * In-Bulit Light Source
* Yellow LED Light
* No external flash light needed * Power : 2 x CR2032 Battery

Refractometer

Refractometer with in-built light source. Hard Cube Zirconia measuring prism, high quality optical scratch proof glass. Aluminum alloy table which is 45mm thick. By advanced optic system, shadow edge is straight and sharp, easy to read. Internally installed the narrow band witch (monochromatic) light. Two ways of inputing the voltage: AA batteries and DC3V direct current supply (AC100—240V).

Scale range: 1.35-1.81.
Accuracy: ±0.003.
Refractometer size: 140mm * 90mm * 40mm

UV Light Box

UV Light Cabinet (LW-365nm / SW-254nm).

Features both UV short wave and long wave light and comes with a chamber for viewing.

Values of the Refractive Index and Specific Gravity of Commercially Known Gemstones

The GAA has provided this A4, colour, eight page, wire bound, laminated and durable brochure that is easy to use; it will prove an invaluable tool to all existing and budding Gemmologists. With tabulated categories such as ‘Gems listed in Alphabetical Order’, Gems listed in order of Increasing Refractive Index’ & ‘Gems listed in order of Increasing Specific Gravity’, it will be easy to find the information you require.

Jewellery Inspector

The Jewellery Inspector allows observation of fluorescence and phosphorescence from SW (short wave) and LW (long-wave) ultraviolet illumination. These observations can help a gemmologist determine whether a diamond or gem is synthetic, treated, or natural. The colour and intensity of the fluorescence provides a useful indicator. A common test is to determine whether the SW intensity is brighter than the LW, which is suggestive of a synthetic diamond.

With the large viewing area (of 50mm x 50mm) the Jewellery Inspector can also be used with a custom jewellery holder (supplied).

GemA Prac Book

Gem-A's practical gemmology handbook, printed in colour. All students of our Gemmology Diploma receive this essential companion for gemstone testing. It includes detailed information about all materials covered in the course, including expected tests results, inclusion photographs for natural and synthetic stones, and other useful gemmology tips.

Gemmology 3rd Edition Peter Read

This third edition has been completely revised to cover the latest methods of gem enhancement and identification, as well as the latest test instruments and laboratory techniques. Gemmology serves as an invaluable reference guide for gemmologists, professionals and students, and is an invaluable text for anyone in the gemmological profession. Also included are details of the Gemmological Association's Foundation Course together with advice on examination techniques.

Handbook of Gemmology by Dominy 3rd Edition

Covering all aspects of the science of gemmology and gem identification this innovative and interactive e-book consists of 1056 digital pages and over 1000 colour photographs, diagrams and illustrations featuring the photography of internationally renowned gemstone/mineral photographers Tino Hammid & Jeff Scovil.