7 1/4" PHENOMENAL MUSEUM QUALITY QUARTZ CELT FOUND IN CALHOUN COUNTY ILLINOIS, EX BEN THOMPSON, EX FLOYD RITTER, MADE FROM THE MOST COLORFUL PIECE OF QUARTZ WE HAVE EVER SEEN, PICTURED NUMEROUS TIMES INCLUDING WHO'S WHO #5 PAGE 293; WHO'S WHO #6 PAGE 90;