so, I did a little checking.
I really enjoy "Mr. G",
as he is right there, with of all kinds of information!
Here's what I found:
Platonic solids are gemstones or crystals that are hand cut
and faceted into specific forms of energetic biogeometry.
Each shape signifies a different earth element,
and meditational meaning.
These shapes are based on the fundamentals of our creation,
and the universal law of attraction.
There are five stones in each set.
Tetrahedron-fire, manifestation, solar plexus chakra.
Cube-earth, grounding, root chakra.
Octahedron- air, integration, heart chakra.
Dodecahedron- spirit/essence, Ascension, crown & third eye chakras.
Icosahedron-water, transcendence, sacral chakra.
Platonic solids encourage enhanced meditation, chakra cleansing,
emotional stability, mental clarity, and energetic awareness.