I just weighed a half teaspoon of high purity gold dust and it
weighed right at 20 grams. At today’s gold price that figures out to
be about $914.
It would be worthwhile sending it to your refiner. There would be
assay and refining charges, but there would still be money left. That
is if it is in fact gold. It may be simply concentrates from the pan,
which would contain some gold but would also have a lot of other
material. Gold panners call it black sand. Much of the black sand is
removeable with a magnet. The rest can be carefully washed away from
the gold. What you want to do is get rid of everything which isn’t
yellow. If you do have gold there you may be able to melt it into a
ball which you can then often roll and draw into useable form I use
it often for bezels and accents.
Jerry in Kodiak