This is a barbed Quatrefoil that stylizes a cross with its barbs, dividing the motif into 4 parts. Cardinal points North, South, East, and West, The Four Winds, The Four Seasons, Four Moon Phases; all groups of 4. The Tetrad is everywhere in Nature.

If you are unsure which stone might resonate with you the most, reference the next tab or click here.

While the word "mandala" means different things to different cultures and religions, its usage is quite common across them.  Intrinsic in the nature of a mandala is the expression of geometry as a universal language.
This language not only transcends cultures but also humanity itself.  Mandalas are occur in nature, from flowers to shells to fruits and vegetables.