aqqindex:

Unknown Bath
oxane:

Azurite + Malachite by thierry tillier 
Laurion , Grèce Découverte 2003 7 x 4 x 3 cm ex collection J. Evlard
02:45
biscodeja-vu:

Common shapes observed in the onset of studies of sound and cymatics- Hans Jenny was among the first to reveal the intricate geometry found in sound structure when attuned to specific frequencies.