Flower Obsidian is a form of natural volcanic glass that goes by many names! Of those is Flower Obsidian, Starry Night Obsidian, and Firecracker Obsidian! It often has Flower like formations of white or pink, and may need stablized before cabbing, as it can have some fracturing. Though, in the rough or cut, it is generally perfectly stable as is! Flower Obsidian is mined in Mexico!
Measurements (inches - longest - approx): 3.5 x 2.6 x .23
The last photo has been taken dry so that you may see any defects. The other photos have been taken wet to simulate a polish.