I did a little looking in the archives but I’m not entirely sure I’m
going to find my answer…by the way, hi, I’m new. ^_^; Both to the
list and to jewelry-making in general.
I have a wax design that I’d like to cast with the stone set in
beforehand. It is a clean, ‘white’ sapphire (it has a very faint
lavender cast to it). As far as I know, sapphire is durable enough to
not break in a casting, but that wasn’t my big concern. My instructor
mentioned, though, that the heat of processing and casting may
discolor the sapphire.
The difficulty is, though, the design of the ring would probably
make post-cast stone setting a bit difficult. I can live with it if
the stone changes color to something that doesn’t clash with blue,
green, or 14k yellow (the ring is also going to have a black opal in
it). Is there any way to predict what color the stone may turn? Or is
the temperature of the molten metal low enough that it won’t change?
–Marcy Osedo (Ponygirl)