Agate / Crystal Geode

Concentric grey rings frame a drusy center like a very still pond.

This is an agate and crystal geode. A geode is a hollow rock lined with mineral crystals, and it forms when mineral-bearing water slowly deposits material inside a cavity over a very long time. Couple of oval faces with smooth bands of grey, white and lilac ringing a frosty, granular core. The outer edge is thin and dark with a glossy sheen. A tiny pale spot marks the rim of the right half. It is 5.5 inches wide, 4.5 deep and 4.25 high.

Ripples frozen mid-thought, and quite content to stay put.