Gem Round Brilliant Cut

Edgar Gidoni

6 Oct, 2021 12:19 AM

This is the tutorial on how to model a gemstone cut in the "Round Brilliant Cut" style. It is an interesting process, instructive and the result is beautiful.
You can download the 3D files here:
DIAMOND (Round Brilliant Cut)

The information about the cutting data and nomenclature of this art is taken from:
https://www.gemsociety.org/article/lapidary-fundamentals-gemstone-faceting/
Thanks to Mr. Donal Clark for all the wonderful information provided on his website.

1. Step 1: Preliminary Info...

   

   
   

   
   

2. Step 2: Pavilion Main Facets...

   

   
   

   
   

3. Step 3: ...And Girdle Foundation...

   

   
   

   
   

4. Step 4: Pavilion Brake Facets...

   

   
   

   
   

5. Step 5: More on Girdle...

   My mistake. In the 2nd image of the 2nd row is 1.5 mm instead 15 mm.

   

   
   

6. Step 6: Crown Main Facets...

   35° for the Crown main facets.

   

   
   

7. Step 7: Brake Facets...

   37.5° angle for the Brake facets

   

   
   

8. Step 8: Star Facets & Table...

   

   
   

9. Step 9: Finishing & Rendering...