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Mounting a diamond on onyx?


#1

Hi all, I have a question on the best way to mount a diamond on onyx.
I think the last stone was epoxied in the onyx would this be the only
way of doing it.

Thanks
Gary


#2

Hi Gary, I’ve seen diamonds on onyx where the diamonds are bead set
in a (usually) white gold piece of trim which is itself diamond shaped
or triangular. This piece trim has a tube attached to the back of it
which fits in a hole that is drilled in the onyx. The dia/trim piece
is then secured from the backside by spreading the tube to form a
rivit or the tube is purchased with threads and a screw tightens it to
the onyx. The trim/tubes and screws are available from Stuller page
281 in their new findings book. I have occasionally used epoxy to
secure these settings if they are loose (turning) and cannot be
tightened by the screw or rivit. The epoxy is a temporary fix.

Good Luck! Sharon


#3

Don’t do it! Glueing in a diamond would be a BAAAAD idea. Usually,
an onyx will be drilled, and a sort of ‘mushroom shaped’ TUBE put in
the hole. Bottom end of tube is spread like a rivet under the onyx,
and the diamond set in top metal surface however you would like. David
Barzilay, Lord of the Rings Take a look at some old men’s rings.


#4
  Hi all, I have a question on the best way to mount a diamond on
onyx. I think the last stone was epoxied in the onyx would this be
the only way of doing it. 

Epoxy works, but a more elegant solution is to rivet the diamond’s
setting to the onyx. Then (I’m assuming the onyx is flat backed),
when you set the onyx in a closed-backed bezel, the rivet will be
invisible.

Beth


#5
Hi all, I have a question on the best way to mount a diamond on
onyx. I think the last stone was epoxied in the onyx would this be
the only way of doing 

Gary, use a tube setting. If the diamond is small, most of the
suppliers, Stuller for example, have the settings. If it is larger,
you will need to make your own. Never epoxy the stone in. It will
not say as you may have found out, and the epoxy changes the optics
of the stone causing it to look dull and lifeless. This goes for any
faceted stone. One more thing, the tube setting should be open in
the back to allow cleaning of the stone.

Don


#6

We use setting plates. Cut the onyx so the setting plate can be
riveted inside and the stone is set in the setting plate.


#7

Most onyx cabs we deal with that have a stone or emblem mounted, have
a hole drilled thru the onyx, and the diamond bezel set, mounted on a
tube the hole diameter and “cold riveted” or capped underneath to hold

good luck, gianna


#8

Gary, The reason the “last” stone was probably lost probably had to
do with using epoxy or some other adhesive. It just won’t last. You
really need to drill a hole in the onyx so that a bezel or prong
setting with a pin or tube soldered to the bottom of the setting can
pass through the onyx and then be soldered or mechanically affixed to
the setting below the onyx. The above has to be adapted to whatever
the design of the piece is. Joel Schwalb @Joel_Schwalb
www.schwalbstudio.com


#9

Dear Fazio the most simple and direct way to set a diamond in Onyx is
in a “tube setting”. when the tube is nicely polished, it looks also
like a diamond too! as a setter, that is just what I would like to see
in an Onyx nuttin’ else.
K.I.S…( Keep It Simple )! gerry, the cyber-setter!