I love opals, so I also have to love the tape!
This is not meant to be rude just a statement of fact.
I am talking about Australian opals.
If you protect your opal with tape you know little about opals.
OPAL SETTING 101
Store your unset opals in distilled water, they do not like to dry
Never set an opal in a closed back setting, it is called a “con job”
(aka fraud) in Australia.
First the piece should be fully polished and cleaned before setting.
Opals should be set in fine silver or 22kt or fine gold.
Although I did know a Japanese gentleman who hammer set his opals in
18 kt, and with the greatest respect well called him a Phreak. If you
can do that move to the next post.
After setting clean up setting marks as for turquoise or malachite.
here it is, a gem (pun intended) from a friend who is an opal miner,
cutter and setter.
here is the believe it or not
a set opal can be polished in it’s setting, it will take as much
heat as your hand.
when the piece gets hot stop and wait.
opals can take some mild heat but not thermal shock.
put your tape away and go take some polishing classes.