Rainbow Obsidian Ring B Auralite 23 5mm and they are strung

5mm and they are strung on an elastic cord

The stone is approximately 10mm

pearly luster and grape-like crystal formations

Size: roughly 4 x 4

This ring is adjustable and will best fit sizes 5 - 8

Rainbow Obsidian Ring B Auralite 23 5mm and they are strungRainnbow obsidian is a type of obsidian that has a rainbow like appearance due to light reflecting off of mineral inclusions. It's a naturally occurring glass that's formed when lava cools quickly. How it's formed Lava from a volcanic eruption cools rapidly when it reaches the Earth's surface The rapid cooling prevents large mineral crystals from growing, resulting in a glassy structure Microscopic mineral inclusions, often magnetite nanoparticles,