Agate Tower Large larimar Obsidian is a naturally occurring

Obsidian is a naturally occurring volcanic glass

The fractured-and-healed look creates natural

The rock industry leaves the naming to the miners and lapidary shops who classify most calcites with with waves and lines as "onyx"

Amethyst was considered a precious gem until the 18th century when large deposits were discovered in South America

Agate Tower Large larimar Obsidian is a naturally occurringA banded variety of Chalcedony, a Quartz mineral, with pink, brown, and gray layers. This piece is polished into a tower. You will receive the exact item pictured. Dimensions: 4. 25 L X 1. 5 W X 4 H inches Weight: 0. 82 pounds