Testers & scales calibrated before despatch

Gem & precious metal testers, since 1986

Collections: Electronic diamond & gem testers

These testers vary from under £50.00 to over £500.00, yet there is no one machine that 100% guarantees you have a diamond; there is no machine that will light up with one 'guaranteed' name of a gemstone - such machines simply do not exist. Browse several articles explaining what these machines can, and can't, do, all beautifully-written in very clear English. 


  • QUICKTEST Diamond Tester
    Regular price
    £59.50
    Sale price
    £59.50
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  • Diamond Selector Diamond Testers, original Japanse CULTI
    Regular price
    £37.50
    Sale price
    £37.50
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  • Diamond Selector Diamond Testers, made in China
    Regular price
    £23.50
    Sale price
    £23.50
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  • Moissanite Tester
    Regular price
    £26.50
    Sale price
    £26.50
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  • Presidium Multi Tester III (model PMuT III)
    Regular price
    £342.00
    Sale price
    £342.00
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  • Moissanite tester by GemVue (Moissanite Plus)
    Regular price
    £49.50
    Sale price
    £49.50
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  • Multi tester for diamond, Moissanite, ruby, sapphire. Experior by Gemtrue
    Regular price
    £179.00
    Sale price
    £179.00
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  • Diamond - Moissanite tester by Presidium, model Adamas
    Regular price
    £322.80
    Sale price
    £322.80
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  • Standard Presidium Electronic Gem Tester (model PGT II)
    Regular price
    £238.99
    Sale price
    £238.99
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  • Handheld presidium gem tester +3x AAA batt (model PGI)
    Regular price
    £285.00
    Sale price
    £285.00
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  • Presidium Duo gem tester (model PDT-S7)
    Regular price
    £394.99
    Sale price
    £394.99
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  • Digital refractometer by Presidium (model Prim II)
    Regular price
    £279.00
    Sale price
    £279.00
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  • Set of Sample Diamond Imitations
    Regular price
    £222.00
    Sale price
    £222.00
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  • Calibration discs for Gemtest-PGI
    Regular price
    £19.50
    Sale price
    £19.50
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  • Probe for Gemtest-PGI
    Regular price
    £58.80
    Sale price
    £58.80
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  • Probe for Presidium gemtest-P2 and SOME gemtest-duo
    Regular price
    £58.80
    Sale price
    £58.80
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  • Probe for Presidium gemtest-P and SOME gemtest-duo
    Regular price
    £54.00
    Sale price
    £54.00
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  • Bottle of Isopropyl for cleaning stones
    Regular price
    £3.50
    Sale price
    £3.50
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  • Cz (cubic zirconia).
    Regular price
    £6.00
    Sale price
    £6.00
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  • Probes for Gemoro AGT electronic gold tester
    Probes for Gemoro AGT electronic gold tester
    Regular price
    £35.00
    Sale price
    £35.00
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