Where This Rock Is From (place, type of locality, etc.)
Central Coast California, San Simeon Beach.
What This Rock Is
Igneous, obsidian with some type of external coating.
What I Like About This Rock
While the core of the rock appears to be solid obsidian. The external coating has striations that take on the appearance of petrified wood.
I was visiting Paso Robles, California and spent the day at the beach. I found several interesting and very different rocks. When I first picked this sample up I thought it was a piece of petrified wood. Then I noted that the purplish/black glassy core. It also has some rust colored bands on the exterior on several sides. Each facet of the angular rock presents an interesting and different appearance. It is a fun conversation piece.
- This rock is fun to handle and turn since all the sides present different facets.