THE GAA SHOP
The Gemmological Association of Australia’s GAA Instrument and Bookshop provides equipment suitable for students, jewellers, gemmologists, valuers and the wider trade. We fully test and review all items to ensure they meet the Association’s high standards. You cannot do a good job without good tools and these tools are great!
Please download and complete the Shop Order Form to place your order.
Financial members of the Gemmological Association of Australia receive a 10% discount
Gem Cleaning Cloth
The Gem Cleaning Cloth is made from a lint free microfibre and has a stitched edge to prevent fraying.
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.
Belomo Hand Lens 10x
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.
Triplet Hand Lens 10x
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.
Tweezers Locking Type
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).
Tweezers No Lock (Diamond Type)
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 Calcite (Gemax)
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.
Dichroscope Calcite PT
Dichro-Loupe London Type (Gemax)
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 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.
Gauge Digital Square
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.
Gauge Digital Round
Scales Gemax i50
This mini scale is portable and durable at the same time. Powered by 4 AAA batteries. You can weigh your gemstones or small jewellery items with ease.
Capacity - 250 cts/Accuracy - 0.005 carats
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.
Polariscope (Folding Type)
Ideal for travelling, folding polariscope. Can also use with microscope.
Base Light for Folding Polariscope
Ideal for travelling, use with the folding polariscope.
Polariscope (Portable LED Type)
Poloriscope (Handle) * NEW * * In-Bulit Light Source
* Yellow LED Light
* No external flash light needed * Power : 2 x CR2032 Battery
Colour Filters (Acrylic Squares)
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.
Polariscope Gemax (White, Desktop Type)
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)
Polariscope PT (Black Desktop Type with 2 Light Sources)
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.
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.
Refractometer size: 140mm * 90mm * 40mm$600
Light Box UV
UV Light Cabinet (LW-365nm / SW-254nm).
Features both UV short wave and long wave light and comes with a chamber for viewing.
Gemetrix 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).
Fibre Optic Light Desktop
Pencil Torch (Full Spectra)
Can be used as a Spectroscope light source. Requires 2 x AAA batteries
Convoy LWUV 365nm
Three Way Light
OPL Book Spectroscope
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.
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.
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.
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.
Jade, A Gemologists Guide by Lotus Gemmology
While the literature on jade is vast, perhaps greater than any other gem, there is a distinct lack of a volume in English that treats jade as a gemological material. This book is designed to fill that gap, with extensive information on the history, sources, appraisal and identification of both treated and imitation jades. A must have for collectors, dealers, gemmologists, appraisers, curators and anyone else with an interest in this fascinating gem.
Jewellers Reference Guide Working with Gemstones
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.*
Practical 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.
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.not available
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.not available