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Menu of Gem Cutting Services.

Cutting a new Carnelian cabochon and
Drilling for a center Diamond

This piece is a pretty classic example of a ring with a cabochon which was worn for many years until the stone was broken. They took it to their local jeweler to see if a new stone could be made. The jeweler sent it to us.

The stone is a Carnelian which also needed to be drilled to re-set the diamond in the center of the stone.

Shows a ring with dark red Carnelian cabochon which has a chip in it.

Ring with broken Carnelian cabochon

When you click on the photo you can see a big chip out of the right side of the stone.

An arrow telling users to click on the photo to make it larger.

This shows the same stone which has been removed from the ring.

Broken cabochon removed from the ring

It is best to remove the stone from the ring to get an accurate measurement of the size of the stone and also the exact size of the center hole which we need to make in the new stone.

Shows a slab of reddish-orange Carnelian rough material sitting next to the broken Carnelian cabochon.

Finding a piece of rough
Carnelian to match

Here I have selected a piece of rough Carnelian material. I always try for an exact match. If I am not able to match the color exactly, the lean in the direction of a nicer color.

See examples of rough Carnelian material on our Carnelian page.

This shows an oval orangy-red colored Carnelian cabochon with a diamond mounted in a gold tube sitting next to it.

The new Carnelian cabochon
with the hole drilled

Here you can see the finished Carnelian stone which we have drilled for the gold tube with the Diamond.

Shows the finished stone with the Diamond in the stone now sitting in the ring.

The new Carnelian stone re-set into the ring

Here I have set the stone into the ring and the tube into the stone.

I goldsmith will need to afix the tube and the stone securely into the ring. We don't do that part.

→ Take me back to examples of Cabochons we have cut and Drilled . . .


Denton Anderson,
Gemologist & Gem Cutter
click photo for Video

Photo of Denton the gem cutter.

Graduate Gemologist, GIA, GG
Over 20 years of experience.