Kazakhstan. Acanthite Crystals from the Chispas Mine in Sonora ; Acanthite on Quartz – La Sirena Mine, Guanajuato ; Agate Slice – Large 9″ Polished Slice from Brazil ; Albite – Large Skeletal Crystals with Mica Tourmaline – Chia Mine ... Stoneco Quarry, Lime City, Ohio ; Chalcedony – "GrapeAgate ...