Selenite Crystal Bowl Black Tourmaline It forms in the cores

It forms in the cores of granite pegmatites as large shapeless masses

volcanic glass carrying a sheen of bubbles aligned as the lava set

champagne to near-black

and why strong sunlight can pale it

Selenite Crystal Bowl Black Tourmaline It forms in the coresA selenite bowl a shallow dish carved from a single piece of translucent white satin spar gypsum, the satin sheen pooling around its curve. A pale bowl for dry stones, rings, and small things. From Morocco. Selenite is gypsum hydrated calcium sulfate, Mohs 2, soft enough to mark with a fingernail. The bowl is carved from a single piece of satin spar, the fibres carrying a soft sheen that gathers around the curve. It is for dry things only never water