Toroid.
The torus has also been used to illustrate certain concepts of the so-called "subtle energy" worlds. The toroidal form figures heavily into the esoteric study of sacred geometry...a meta-science that reveals how shape and form are primary underlying principles of manifestation.
Having this form of sacred geometry in your space is a perfect way to manifest expansion, growth and evolution.
Inspired by the divinity and sacredness of this design, I have used vibrant deep coloured inks on Archers watercolour paper and Japanese brushes to create a beautiful mandala. This greeting card is from original painting created just recently.
A perfect card for yourself or another.