Please note all prices listed are based on cash prices and are exclusive of VAT. Prices for precious metal products are an estimate only and can vary slightly depending upon the metal price, the actual weight and the cutting tolerances which we are able to achieve. Bullion prices are based on 10gm.
Diamond and Gemstone Testers
Ensure the authenticity of your precious stones with our professional range of diamond and gemstone testers. Whether you’re working ith moissanite, diamonds or other semi precious gemstones, our testers deliver quick and accurate results you can trust.
We stock both advanced testing devices and compact, portable testers from leading brands such as Gemtrue and Presidium, trusted worldwide by jewellers. Shop the full range now.
Gemstone and Diamond Testers for Jewellers
In jewellery making, quality and authenticity are everything. That’s why our range of gemstone testers and diamond testers is designed to give you confidence in every stone you work with. From checking raw materials to authenticating finished jewellery, these testers provide reliable results in just seconds.
Our selection includes:
Diamond testers for instant verification of real diamonds.
Moissanite testers to differentiate between moissanite and diamonds.
Multi-gem testers capable of testing a wide variety of precious and semi-precious stones.
Experience reliable results with our diamond and gemstone testers
All of our gemstone testers and diamond testers are battery operated and built with jewellers in mind. Key features include large illuminated panels for a clear view, ergonomic touch grips for accurate handling, and portable designs ideal for both workshop use and on-the-go testing.
Simple to operate yet highly effective, these testers are suitable for both beginners and professionals.
Why choose a professional gemstone tester?
Accurately testing your gemstones helps ensure the value and authenticity of your jewellery pieces. Whether you’re buying raw stones, setting gemstones into jewellery, or offering customer assurance, our diamond and gemstone testers provide peace of mind by reducing the risk of working with imitation materials.
Shop diamond and gemstone testers at Cooksongold
All of our diamond and moissanite testers are industry approved and easy to use for both gemstone experts and beginners. For more information on any of our gemstone testers or diamond testing equipment, contact us today.
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International Stores
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© 2025 Cookson Precious Metals Ltd. VAT Registration No. GB161 8062 21. Registered in England no. 2775187. Registered Office: 59-83 Vittoria Street, Birmingham, B1 3NZ
Tel: 0345 100 1122 or 0121 200 2120 Fax: 0121 212 6456