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[yak] Ultrasonic /safe for gems


#1
In just looked at the safety chart I typed and noted the format
was destroyed in transmission.  Sorry but I made it nice!

Try using tab stops instead of spaces, it’ll hold the formatting
with proportional fonts.

I just finished a chapter in my GIA colored stones course about
putting colored stones into ultrasonics. And just to think that
for the last 26 years I’ve been taking chances… I had no idea,
it’s just that every shop I ever worked in put pretty much all
colored stones in the cleaner… I guess we were all lucky to
not have damaged stones…

JE


#2

. I had no idea, it’s just that every shop I ever worked in put
pretty much all colored stones in the cleaner

Not my shop, all it took was one $1900.00 oiled ruby and a lost
customer.

Mark Parkinson