Just wondering what happens to the diamonds that get burned or
frosted when heated.
Plural? diamonds? More like it should be “diamond”. singular. Once
you’ve done this once, why would you make that mistake again?
OK, I’m overstating the case, as I too have burned more than one.
But seriously. All you have to do is be sure they’re properly clean,
and properly coated with a flux or similar protectant, and think
through a job so you know what you’re doing first, in terms of
avoiding overheating, and this should not be a common situation. It’s
avoidable, and costly when you don’t take the proper precautions to
avoid burning the stones. It’s not usually an “accident”, beyond the
first couple “learning experiences”. After that, it’s haste,
stupidity, carelessness, and the like, all of which perhaps SHOULD be
a bit painful…
Do you throw them away or use them? Also, can you repair a diamond
that is frosted from overheating? Would not these damaged diamonds
be good for practicing setting with or not? I am curious if they
are somehow recycled.
If they’re tiny, toss em, practice with em, make a diamond tipped
scriber or other tool with it, or save it as a reminder to clean your
diamonds before heating. If they’re big enough to justify spending a
bit of money to fix, they can be repolished. They loose a little
weight in the process, but not all that much. Not worth doing with
melee in most cases, but for larger stones, it’s routine. “larger” of
course, is a variable definition depending on which cutter you’re
talking to, and the original quality of the stone.
The main thing to know is that the damage is usually just the
surface being frosted. Inside, they’re generally unchanged unless you
quenched them and shattered them in the process.
You could us them for practice setting if you want, if they’re too
small to warrant repolishing. But for me, I’d guess there are better
stones to practice with. Try synthetic rubies, for example. Makes it
very easy to see just where the metal is, so learning to work cleanly
without flanges, fins, tool marks, etc, is easier than with stones
the same color as the metal (I’m thinking practice with pave methods
in this instance). Or practice with something fragile and cheap, like
glass rhinestones. When you’ve got the skill to set those securely,
but without breaking them, you’ll know that you’re not likely to be
breaking the more durable and costly stones.