Magicians and alchemists have been trying to change base metal into gold for centuries. Now it is possible with a little magic!

Show small brass vial, a magic potion, and an brass box containing some black metal filings. The filings are put inside the vial & put the cork on top.

Shake the vial and pour out the contents inside, the metal filings have changed to GOLD filings!!
The gold filings are put back into the vial. Give it a shake and a gold NUGGET is produced from inside!
The vial may be examined as there is nothing for them to find.
Hand out the vial for inspection. Made by Viking.