| A cupel or cupelling hearth in which precious metals are melted for trial and refinement. |
| Lead cube contains any precious values and is ready for cupelling. |
| Gold and silver bullion that remains in a cupelling furnace after the lead has been oxidized and skimmed off. |
| The fire assay begins by combining your sample with pure silver and pure lead in a process called cupelling. |
| If these larger cupels are not at hand the larger buttons will have to be reduced in size by a scorification before cupelling. |
