General information about the Site

This lapidary and jewelry design community forum is dedicated to the novice, more experienced, and expert lapidaries and jewelry designers.

Forum cabochon in the Spotlight

Bob ( bobby1 ) shared this unknown druzy

Forum Jewelry Design in the Spotlight

John shared this beautiful pair of amethyst cufflinks

Forum Jewelry Design in the Spotlight

Mick B shared this stunning opal shell carving

Intarsias / Composites / Bead Making in the Spotlight

Kent shared this really nice Imperial Jasper pendant

Lapidary Related and Forum Member Shop Links

Brian Ababurko Silversmithing Classes / Rock Rollers Club

Dons Lapidary Arts

Idaho Rock Shop

Rare Rocks and Gems

Coyote Rainbow


Rocky Treasures

Talking Rocks

Fine Gem Designs

Idaho Rockman

Fine Woodwork and Lapidary

Darkstar Jewelry

DLC Gems

Teton Art Gallery

Art Cut Gems

Woman With A Torch

Lapidary Buy and Sell (Facebook Group)

Lapidary (Facebook Group)

Lapidary Equipment Marketplace (Facebook Group)

Lapidary / Gemstone Community Forum
May 21, 2019, 10:58:53 pm
Welcome, Guest. Please login or register.

Login with username, password and session length
  Home Help Search Login Register  

Has anyone tried "faceting" a clear "thicker" rock pendant?

Pages: [1]   Go Down
Author Topic: Has anyone tried "faceting" a clear "thicker" rock pendant?  (Read 430 times)
« on: March 21, 2013, 02:29:49 pm »

I wonder if that would much, if any, it would make it light up?
Report Spam   Logged

Hero Member
Offline Offline

Posts: 4924

« Reply #1 on: March 21, 2013, 03:57:56 pm »

 Not really. the reason faceting works is because cutters and scientists have determined the " critical angle " for the bottom of a faceted stone to return the most light possible of the light entering the top of the stone . For quartz this angle is about 43 degrees  and other stone types are not far off . This is why the bottom of a facet stone , the pavillion is so steep , it has to be around 43 degrees or the light returned is less than the maximum , you would have to say it is poorly cut. You can cut  various facets on any clear stone and occasionally viewers will randomly get a good  light return  but the effect is largely psychological , the facets look expensive .
Report Spam   Logged

« Reply #2 on: March 21, 2013, 04:23:33 pm »

Thanks, my knowledgeable friend~
I may try a poor example...just for the heck of it.
Report Spam   Logged
Hero Member
Offline Offline

Posts: 4924

« Reply #3 on: March 21, 2013, 05:01:05 pm »

 I do variations on that theme . Start with a sort of triangle . Take a piece of clear stone and decide on a length for the [pendant and pick a front that is a flattish curve  when seen in cross section . Make the  back two angles that are a bit steeper so that on cross section you have a sort of triangle . Add curves to the bottom and top of the pendant to maximize on the angles from which you get good light return.
Report Spam   Logged

Pages: [1]   Go Up
Jump to:  

Bookmark this site! | Upgrade This Forum
SMF For Free - Create your own Forum | Buy traffic for your forum/website

Powered by SMF | SMF © 2016, Simple Machines
Privacy Policy