Hello again folks.
Thanks for all who answered my recent questions about gold melting/working, I am now set up and happily working with gold and silver.
I have a question about natural golds from around the world... as is well known gold occurs in many different geological ways and will often take into it's structure other minerals. So in some places you might find gold that is more yellow wheras in others a more richer orange colour, or white.
I have recently bought some natural panned river gold from Idaho in the USA and had fun melting down a small amount. It's colour was a very pleasant yellow, unlike the 24ct bullion gold I also melted. I was very pleased with it's workability and colour and made a nice pendant from it. Apparently the areas around Idaho were once covered with glaciers and all kinds of minerals could have been introduced to the gold when it was formed.
My question is: Does anyone know where I can find information on the internet about what minerals might be affecting the colour of this gold from Idaho? For example, if natural Tin was present then this would possible devalue the gold in this raw state? Or if it was something rare then it might add to it's value. Just wanted to know what was in this gold I am using.
I have a friend in Italy who can sometimes to those spectra-analysis tests but I am thinking the information is likely already out there?
anyone help me on this one? Thanks ;-) Heather