Blue Onyx 20mm Mushroom Shaped Crystal

This mushroom-shaped crystal carving is listed as Blue Onyx 20mm Mushroom Shaped Crystal (shop SKU A260), and is sold at Namaste Bookshop near Union Square.

Onyx is a banded form of chalcedony, often cut as a solid dark stone for jewelry. In crystal traditions, 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: A260

See it at Namaste Bookshop, 2 West 14th Street near Union Square in New York City, or order online.