I have read the accounts on ruby in the archives, many of which say
that ruby cannot be scratched....only perhaps dented
More likely than a scratch you may have a percussion mark. Look at
it under 10X, if you see that the surface is still intact but there
is an odd reflection that seems to emanate from just below surface,
then that’s what you have, although scratches are indeed possible
too. It can be polished out but there are considerations. Since its a
cab and not faceted, polishing is easier. If you have clear access to
it you can use diamond abrasive belts and feather it into the
curvature of the stone. You could also pull the stone and dop it to
get more control.
there is a small "divot" (sp?) in one side of the top of the bezel?
Bad use of pusher? way to fix?
You can get a divot when you start the pushing at one point and roll
completely around the circumference uninterrupted. When metal bends
it stretches and the resultant ‘excess’ metal has to give somewhere,
hence divot. Instead, push in quadrants. That is, push a little bit
at north south west and east. Bring the bezel in a little at a time
at each point and the in between areas too. This allows the metal to
close in on the stone without the stretch being transmitted all
around, building up a ‘pucker’. It also makes it easier to keep the
stone centered. This is even more crucial when you do an oval. Start
at the ends and work your way evenly to the sides.
There will always be some distortion and tool marks. Get yourself
knife edge pumice wheels for your flexshaft. Pumice is safe for most
stones, but always try an inconspicuous spot first. With a little
practice you can run the wheel around the bezel edge and regain a
clean smooth look. Follow up with a soft white bristle brush and
A note about gauge. I see some people like to use a thin gauge bezel
strip. I assume because they think its easier to bend. My experience
suggests that thin, commercially made bezel strip tends to be
springy(particularly gold), which as you can imagine makes it a
tedious thing to run that bezel tight. I like a thicker material.
Properly prepped its easy to move and is much more forgiving of
inconsistencies in technique. It may even act as a cushion between
the tool and the stone, reducing the tendency to marking up the
stone. I also think a substantial bezel looks better. A hammer
handpiece is essential here. I’ve done it with chasing tools and
hammer but that’s tedious too.
Congrats on the milestone!!