silver & gold bullion bars (ingots) and gold / quartz specimen

assay assayed banking bar bars bullion companies company currencies currency deposits fine fineness gold grade high industries industry ingot ingots investing market metal metals mine mines mining natural nugget nuggets ore ounce ounces pile placer poured precious price prices prospecting pure purity quartz raw refine refining rich riches risk savings shiny silver specimen specimens stacked stamped troy valuable value values vein wealth wealthy weight world