Datolite, Knowlton Lode, Caledonia Mine, Ontonogan County, Michigan Miniature 1.5 x 3 x 3.5 cm $60. Online 11/29
NSMW12436
Polished reddish gray datolite nodule with a bright white creamy edge. Nice color and excellent polish. No faults. Betty Kalaskie Collection #688.