The Kalo Shop modernist unisex ring

The Kalo Shop
modernist unisex ring
Chicago, Illinois
sterling silver, green hardstone
stamped marks
7.9 dwts
size: 8 1/2; face: 3/4"w x 7/16"h

Provenance:
The Paul & Terry Somerson Collection of 20th and 21st Century Metalwork and Jewelry
Condition Report: Light surface scratches, typical of age, use and polishing. Natural inclusions to the stone. Stamped: Sterling / Kalo.