Orange Spiny Oyster Cross in a Sterling Silver Ring by Richard C. JimStunning Orange Spiny Oyster Sterling Silver Ring size 9. Set in solid sterling silver and genuine spiny oyster. This ring measures 1 5 8" x 1 5 8". Stamped and signed by artist by Richard C. Jim. Artist Information Richard C. Jim Navajo Artist Navajo silversmith, Richard C. Jim, has become known for his excellent repouss sterling silver jewelry. Repouss is a difficult technique where silver is pushed from behind to form a raised design. He accented