Hi all
i was just checking the archives for some info on Opal tests, and
there were afew threads on the testing, one was by Don Rogers 2002,
i tried to google him but it seems it was sort of a dead end, i was
wondering if in simple terms there was a test for being able to tell
if what you are purchasing is a yellow opal or chalcedony, i know
hardness test is the way to go, i am just wondering ona practical
sense what would be a hardness test, scratching the stone with a
hard material like tool steel ? or? i know chalcedony does not want
to scratch that way, I had purchased a few peices of really nice
looking yellow golden opal, but I just don’t know for sure since the
price was low and the source was reputable, but had a nagging
question on the price. any one out there with a practical test for
me to perform at the bench? ??
thanks Hratch