There's a lot of opal to play with here. Chunky and voluptuous.
Deep blue color on one face, and blue/purple on the reverse interspersed with natural sandstone inclusions.
Body tone is N2 for the majority of the opal, tending semi translucent towards the edges.
Cut into a funky free shape double sided pendant stone and retain the sand as a feature on the back.
(Note: photos are a combination of dry and wet images)
Image #4 is a side view.