In the jewellery and watchmaking trades, precious metals are a tricky thing to deal with, at all levels:
understanding alloys and prices
need for traceability
caring for the respect of alloy proportions
For a start, here is where one may find the reliable information on the price of gold and metals rate worldwide. Little by little, we aim to assist you with more information. In the meantime, feel free to write us back for any questions you may have.
In the USA: