A lovely little 10x8mm moss agate, set in sterling silver. 

The ring is a size K1/2 and is made from 1.5mm round wire. I've made the setting with a cut out back and as open as possible to allow the light through this beautiful stone. 

Although it looks like fern or moss inside the stone, it's actually mineral rather than organic - but to me if feels like carrying a bit of the forest magic with you.