Ring with blue -green colors agatized opal wood

Classic sterling silver base ring Adjustable with oval shape of gorgeous light colors of petrified opalized wood..What a wonderful present!

Petrified wood forms after a tree trunk becomes covered by wet mud composed of fine sediments or volcanic ash. Water keeps the wood from decaying quickly, and the mud provides silica that gradually replaces the wood's cells with quartz, opal, or chalcedony (all are forms of silica)