Spirit Sun" and "Context Cut" are trademarked names. The angles are
slightly different for each type of colored stone material. With
diamonds, the angles are very specific, and the cuts are patented.
The cuts themselves are very basic, and one of the first things that
a cutter will learn to do. I have been using a stone similar to the
"Spirit Sun", but with 13 concave facets on the pavilion and 13
facets on the crown. Richard Homer has been cutting these for me for
years, under the trademarked name of "Vortex Cut." The "Spirit Sun"
cut uses 16 facets on the pavilion and 16 facets on the crown. Many
years ago, I was sued for using this cut in my work, and I won. You
can cut stones like these, you can cut variations of this cut, but
you cannot call them "Spirit Sun" or "Context Cut."
16639 Raven Rock Rd.
Sabillasville, MD 21780