Vintage Hopi sterling silver and Holley Blue Chalcedony ring by Hopi silversmith-Ryan Kuyvaya. Holley blue Chalcedony is from Holley, Oregon and the main mine is played out. The size and intensity of color of the stone is exceptional, the chalcedony does have some tiny black inclusions and is translucent. The ring is a size 8 and the stone is in great conditions with no noticeable scratches or abrasions. If this chalcedony stone had bandings or patterned designs is would be called agate. This is a rare American chalcedony- natural and untreated in anyway. The Holley chalcedony measures 22 mm by 15 mm. We can size the ring up, or down 2 sizes for purchaser at no charge. Rings sized by us may still be returned, rings sized elsewhere may not be returned.