Rainbow Obsidian Ring B Bat This 11mm geode is set

This 11mm geode is set into an adjustable sterling silver vintage-style ring

Weight without stand:  13

Calcite is a common carbonate mineral that's made up of calcium

This ring is adjustable to most sizes

Rainbow Obsidian Ring B Bat This 11mm geode is setRainnbow 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,