The solution was to buy a special bit of kit called an X-Ray Fluorescence machine of course!
The name is like something out of a sci-fi movie but here's what it basically does:
An XRF machine enables us to perform a non-destructive test on their jewellery to determine the exact purity of the gold. This will be especially useful if the jewellery was bought on holiday from Turkey for example, the Far East or anywhere else. Also it works perfectly for jewellery that is broken or not hallmarked. Using this machine we can determine if its 8,9,10,14,18,21 or 22 carat gold and the value difference is significant for the customer.
"We will be the only Jeweller in the country offering this degree of certainty so you can be sure you're getting the true value of your unwanted jewellery." - Peter Middleton, Managing director of Gold Reserves.
It doesn't have to be just gold either - we could test any metal items e.g. silver or platinum.