Purple Quartz Hourglass Bannerstone, St. Clair CO, IL, ca 1000 BC
A Museum Quality Prehistoric Purple Quartz Hour Glass Bannerstone from St. Clair County, Illinois. Perfectly symmetrical with great color. Measures 3 1/8" length by 1 15/16" width. Ex Collection Byron Knoblock #86. Jackson Certificate of Authenticity rare Grade 10 (G10).