Flower/Fireworks Obsidian Rough Chunk! Big Diggins Agate Birdseye Rhyolite tends to be

Birdseye Rhyolite tends to be pretty solid and takes an excellent polish

and spiral shells

It could also be a nice collectors piece for an aspiring rockhounding child (pebble pup)

Measurements (inches - longest - approx):  6

approx 410 million years ago

Flower/Fireworks Obsidian Rough Chunk! Big Diggins Agate Birdseye Rhyolite tends to beFireworks Obsidian also goes by the name of Flower Obsidian. It is a very rare form of natural volcanic glass Obsidian found in Mexico. It has a very high mineral content, which gives this material its gorgeous pattern and colors! It often has chrysanthemum like flowering with a black or pink backdrop. It can take a decent polish, but with the impurities giving it this crazy display, it can often be fractured and pitted and may need to be stabilized