Black Onyx 20mm Mushroom Shaped Crystal

This mushroom-shaped crystal carving is listed as Black Onyx 20mm Mushroom Shaped Crystal (shop SKU A205), and is sold at Namaste Bookshop near Union Square.

Onyx is a banded form of chalcedony; black onyx used in jewelry is often a dyed or uniformly dark chalcedony. In crystal traditions, black onyx is associated with protection and self-mastery. Those ideas belong to folklore and personal practice, not to any medical claim.

The title lists a size of 20 mm. Natural stones vary in color, clarity, and shape, so the piece you receive will have its own character even when the weight, grade, or size is listed.

• SKU: A205

You can see this one in person at Namaste Bookshop, 2 West 14th Street near Union Square in New York City, or order it online.