Mumble - tourmaline
Mumble - tourmaline

Mumble: Online Faceting Designs and Diagrams


"The Mumble" by Jeff Graham can be cut with or without a table and is well suited for medium to light colored quartz, tourmaline, topaz, or peridot. Experienced faceters can cut this gem design quickly, and it’s different and bright enough to attract attention and sell well, too.

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I wanted a design that would look different. Something where I could leave an apex on the crown if I wished. The Mumble cut looks good either way.

You can find cutting instructions for the Mumble here.

Cutting Remarks

Mumble - tourmaline
An approximately 2.20-ct, 8.8 x 6 mm (deep) cornered Mumble cut, top-color pastel green tourmaline, Afghanistan. Cut by Jeff Graham.

Although the Mumble looks good with or without a table, I think cutting a table is a good idea with lighter colored and larger stones.

The Mumble isn't hard to cut in larger stones, but the meets get difficult as the gem gets smaller on the crown.

This design cuts fast and works well in quartz, tourmaline, topaz, and peridot. I recommend cutting it in a medium-color material. Since this is a very bright design, it will overpower a lighter stone. (Still, I did cut the example shown above in a light pastel piece of tourmaline).

This is a "Money Cut." I've found this shape sells very well for those of you interested. It will set easily in most trillion mounts, yet looks different enough to catch the eye. I've sold every Mumble I've cut.

Enjoy cutting your own "Mumble."

Mumble - array
Random - Cosine - ISO

Detailed faceting instructions by Jeff Graham available at The Rock Peddler


Jeff R. Graham

The late Jeff Graham was a prolific faceter, creator of many original faceting designs, and the author of several highly-regarded instructional faceting books such as Gram Faceting Designs.

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