GEM TESTERS


Instruments measuring the THERMAL CONDUCTIVITY and the REFLECTIVITY property of Gemstones

The Gemtek instruments measures the THERMAL CONDUCTION of gemstones using a heated probe.

The Daneng Gemsensor measures the REFLECTIVITY property of gemstones using an infrared probe.

Generally, a gemstone is not positively identified by just one test alone and the instruments below should not be considered

as being able to do so, although it may be possible at times, especially with diamonds.

The identification of a gemstone is generally a process of eliminating possible stones down to one specific.

The instruments below, and especially the combination of the GEMTEK GEMMOLOGIST, the DANENG GEMSENSOR and a gemstone colour chart, can be very helpful in such a process.

GEMTEK Diamond Detector - Desk Model;

It has an ON/OFF switch & light, test point for the probe and a ready/test light.

It is very basic and simple to operate.  No special training is required.

Step by step instructions are displayed on the front panel.

Stones can be very quickly tested, even whilst set in jewellery, and;

if the test is negative, then the stone can NOT be a Diamond,

if the test is positive, then it is MOST LIKELY a Diamond.

It comes with an 18Volt, 1Amp, DC power supply.

GEMTEK Diamond Detector - Pocket Model;

It is very basic and simple. It can test stones whilst in their settings.  

It has an ON/OFF switch & light, a test light and a retractable testing probe.

It operates on three 9V button batteries (not supplied).

There is a connection for plugging in a re-charger, but must only be used if re-chargeable batteries are installed.

Options:

Re-chargeable 9V Ni-Cad batteries.

A 27V Ni-Cad battery charger.

GEMTEK GEMMOLOGIST;

The GEMMOLOGIST can be very helpful in order to determine what a

stone is likely or not likely to be, even if set in jewellery.  

It may at times positively identify a gemstone, especially diamonds.

It comes with an 18Volt 1Amp transformer for 220-240V power supply.

Options:  

A Sterling Silver test/reference plate set with gemstones.

It is used to ensure that the GEMMOLOGIST is properly calibrated to the

supplied list of test values for various gemstones. (see bottom of page).

To test if you need the GEMMOLOGIST…;  What stone is this?

View video here:  or here:       To view the answer, click here:

DANENG GEMSENSOR;

The GEMSENSOR can be used for testing stones already set in jewellery which is an advantage as many of the test normally used require the stone to be un-set.

It comes in a carry case: 230 x 185 x 45mm.

The GEMSENSOR operates on a 9V button battery (not included).


(If both the GEMSENSOR and the GEMMOLOGIST place a stone tested in the same gem family group, then the colour chart may enable a definite identification.)

Sterling Silver Test/Reference Plate;

It is set with: Sapphire - Citrine - Emerald - Cubic Zirconia with each stone, and the Silver plate itself, producing different readings on the GEMMOLOGIST.

The readings cover the whole scale range with the Silver Plate producing the lowest (similiar to Diamond) and the Cubic Zirconia the highest reading.

The plate have various size holes on it where small unset stones can be placed and held stable whilst testing.  Although it is desirable to keep the GEMMOLOGIST calibrated according to the supplied chart of readings for various gemstones, stones can be tested by simply comparing test results with results taken from KNOWN stones, like the ones on the plate.

Tip: Reduce or increase page size: Ctrl- or Ctrl+

$$$ SALE Click Here

10971.1 web.wmv The  Testing : The Gemtek Gemmologist - Testing Stones WMV  web.wmv The  Instrument : The Gemtec Gemmologist - The Instrument MP4 web.mp4 The Gemtek Gemmologist - The Instrument WMV web.wmv The  Procedure : The Gemtek Gemmologist - Temperature_Test Procedure_Test Plates WMV web.wmv PayPal: Add Gemtek Gemmologist to cart

$350.00

African Ruby,Andamooka Matrix,Andamooka Opal,Andamooka,AusJade,Aussie Sapphire,Aussie,Australia,Australian Agate,Australian Banded Agate,Australian Black Sapphires,Australian Blue Sapphire,Australian Cabochon Blue Sapphire,Australian Cabochon Sapphire,Australian Chalcedony,Australian Chrysoprase,Australian Cut Sapphire,Australian Golden Sapphire,Australian Green Sapphire,Australian Jade,Australian Parti Coloured Sapphire,Australian Parti Sapphire,Australian Sapphire,Australian Yellow Sapphire,Australian,Black Onyx,Black,Blue Sapphire,Blue,Boulder Matrix,Boulder Opal Carving,Boulder Opal,Boulder,Burmese Ruby,Burmese,Cabochon Blue Sapphire,Cabochon Sapphire,Cabochon,Carved Boulder Opal,Carved Opal,Carved,Certificate,Ceylon Sapphires,Chalcedony,Chrysoprase,Coober Pedy Opal,Coober Pedy,Coral Bead,Coral Bracelet,Coral Carving,Coral Necklace,Coral,Corporate Gifts,Cost Price,Cost,Crystal Bead,Crystal Opal,Crystal,Cut and Polished Opal,Cut and Polished,Cut Opal,Cut Sapphire,Cut Turquoise,Cut,Dark,Deep Coloured,Deep,Display Stands,Display Tray,Doublet,Electroformed Jewellery,Emerald Cut Sapphire,Emerald,Faberge,Facetted gemstones,Facetted Sapphire,for sale,For Sale,Gems,Gemstone Certificate,Gemstones,Gold Jewellery,Golden,Green Agate,Green,Heart Shape Sapphire,Heart,Hematite,High Quality,High,Jewellery Boxes,Light,Lightning Ridge Black Opal,Lightning Ridge Opal,Lightning Ridge,Low,Madagascar Sapphire,Madagascar,Made in Australia,Markets and Fairs,Markets,Market Stall Holders,Market Stall Holders Supplier,Market and Fairs Supplier,Marquise Cut,Marquise Shape,Marquise,Medium Quality,Medium,Milky Opal,Milky,Mother of Pearl,Mozambique Sapphire,Mozambuiqe Ruby,Natural Australian Sapphire,Natural Sapphire,Natural Unheated Sapphire,Natural Untreated Sapphire,Natural,Opal Carving,Opal Doublet,Opal for sale,Opal Jewellery,Opal Jewellery,Opal Triplet,Opal Watches,Opaque,Orange Sapphire,Orange,Oval Cut,Oval Sapphire,Oval Shape,Oval,Pear Shape Sapphire,Pear Shape,Pear,Pink Sapphires,Pink,Pinkish,Plated Jewellery,Polished,Price,Purple,Purplish,Red on Black,Red,Reddestone Creek Sapphire,Reddestone Creek,Reddestone Sapphire,Rich Blue,Rose Quartz,Rough Australian Gemstones,Rough Australian Sapphire,Rough Australian Turquoise,Rough Boulder Opal,Rough Gemstones,Rough Opal,Rough Sapphire,Rough Topaz,Rough Turquoise,Rough,Round Sapphire,Round,Royal Blue,Rubies,Ruby,Safhir,Safhire,Safir,Saphire,Saphires,Sapphires,Shape,Silver Jewellery,Silver Plated,Silverform,Sri Lanka,Sri Lankan Sapphire,Swarovski Beads,Swarovski Crystal Beads,Swarovski Crystal,Swarovski,Thai Sapphire,Thai,Tiger Eye,Translucent,Transparent,Treated Matrix,Treated Opal Matrix,Triplet Opal,Triplet,Turquoise,Unheated,Untreated,Very Deep Blue,Very Deep,Very Light,White,wholesale price,wholesale,Yellow Sapphires,Yellow,Yellowish,

The Bargain Corner

 S y d n e y

A u s t r a l i a