Object Record

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Collection Speer Collection
Catalog Number 1999.0001.0937
Object Name Doughnut Stone
Description A whole perforated groundstone ring, also known as a doughnut stone in Southern California archaeology. The object's date is the Late Prehistoric [1300-800 years ago] and is associated with discoidals and cogstones. This bifacial stone was shaped by construction, rather than use. It is circular in shape. The stone material is a possibly gabbro with garnet inclusions. It is coarse grained.

The stone has a deep soil residue throughout. The stone ventral side is flat with a convex curve to the edges. This surface appears to be pecked. The stone dorsal side has a sloping rise that is convex to the edges. There is a loss on about 1/3 of the surface that appears to be an older break. The stone is otherwise whole. The perforation in the center is biconical and there are concentric ridges on both sides of the perforation perhaps indicating that the tool used to create the hole was uneven or applied unevenly. Wear marks on the perimeter sides appear as pecking. The stone appears to be ground on all exterior surfaces.

Length - 1.732", Width - 1.732", Depth/Thickness - 0.826", Weight 2.398 oz
Provenance Vallecito Valley: Vallecito is "little valley," in the Spanish name translation. It is also the site of the historic Butterfield Stage Station. Vallecito (sometimes, Vallecitos) has been a campsite oasis for thousands of years, beginning with the Kumeyaay/Diegueño Indians.
Date Late Prehistoric (1300-800 YA)
Material Gabbroic
Culture Kumeyaay / Diegueño
Place of Origin CA, SDi
Caption Gabbro Doughnut Stone--view A, pecked ventral side with perforation.