Or is it still 14k. In other words does adding flux remove other metals and leave you with pure gold? Thank You
Answers (1)
Gold melts at almost 2,000 degrees F, so you need some serious equipment to generate that temperature and to contain the work without setting fire to the building. Figure about US$2,000 for a small setup, maybe more. To separate gold from base metals requires an assay furnace, which is not the same as a casting furnace. You will need some cuples, pronounced "kew-puls", made of portland cement or bone ash. The gold is melted in the cuple and the cuple will absorb up to its own weight in base metals.
You will need "De Re Metallica", the edition by Herbert Hoover, to get full instructions on the process. Most of that information can be looked up for free on the internet.
www.amazon.com/Re-Metallica-Georgius-Agricola/dp/161427746X/ref=sr_1_2