I’ve recently encountered a problem with some purchased opal
triplets. Two different stones, two different rings, one customer.
The customer purchased a bezel set ring with a triplet ( the ring was
one which I had made and the triplet was purchased at a wholesale
show in Michigan a few years ago, I set it in the ring.) The opal
was clear and very colorful when I delivered it to the gallery from
which it was sold. The customer took the ring home, wore it for a
few days and then returned the ring for re-sizing. Rather than try
to stretch the ring two sizes, I removed the opal triplet, and put it
into a similar, but larger ring which I made. As I was re-setting
the stone, I noticed a crescent shape of “fog” below the cap of the
opal. This foggy area was not in the triplet when I set it in the
first ring. So, I replaced that opal triplet with another which was
similar in color.
A week after the customer picked up the ring, the gallery owner
called me and said that the customer thought she got water on the
stone and that a foggy crescent shape appeared on the opal. I have
no idea what would have caused this, nor why this happened to two
different stones . . .
Other than admiring opals, I know very little about them, and I know
nothing about how triplets are put together. I know they have three
layers: base, opal, and cap. Are they glued? What kind of glue is
used? Can these layers come apart and can water actually get inside?
Can I repair these stones? If not, how can I prevent this from
happening again (I have 6 more stones and all were purchased from the
same person at the same wholesale show.)
Thanks for ANY advice!!!