Cash for Gold UK It's very easy to exchange your unwanted, antique, or broken gold jewellery, Sterling Silver or Diamonds into cash with Cash for Gold UK. All you need to do is contact us for our FREE GOLDPAK, and then we shall send you a secure, prepaid envelope. You can then use this envelope to mail us your jewellery with no hassle whatsoever. You can also ship us precious metals or diamonds using FedEx completely free!