To me, the most satisfying arrangement of stones always seems to be a cellular pattern.
All the words in the thesaurus to describe cellular help form the image of what stone possibly in it's essential nature is becoming, or in some distant past, has come from.
amoebic
anatomical
animate
basal
biological
biotic
elemental
essential
fundamental
inherent
integral
live
living
necessary
nuclear
original
plasmic
primary
prime
primitive
principal