Bars or coins are usually made of pure gold or known alloys. For precious metal jewellery, however, there are many different compositions of the most diverse materials, which can be challenging task.
The CaratScreenPen is our solution for testing the carat number of objects containing gold. It measures the carat number of gold within seconds.
If you want to know in detail what to look for in jewellery testing, you can take a close look at our gold test page.