Frequently Asked Questions | Goldanalytix
Here you find answers to the most frequently asked questions on all topics related to precious metal testing. The questions and answers are neatly arranged according to key topics - so you can find what you are looking for very quickly.
For jewellery, there are two main types of counterfeiting. One common form of jewellery counterfeiting is false hallmarks, i.e. sub-alloys in which a higher proportion of gold is stamped on than is actually present. The CaratScreenPen is the best device to measure the carat number of gold within seconds. Test acids or density scales can protect against this. The other form is the use of counterfeit materials, such as wolfram carbide jewellery with gold plating, or e.g. "Autobahngold", which often consists of gold-plated brass or stainless steel. Here, the GoldScreenPen can in some cases give important indications.