A small cabinet specimen of lustrous gemmy blue crystals of Willemite, from the Tsumeb Mine, Namibia. Crystals of hexagonal barrel shaped Willemite measuring to 4mm, are pleasingly contrasted on the white pearly lustered Dolomite. The reverse of the specimen is covered in a sparkling botryoidal druse of Willemite, also coloured blue with underlying red-brown Dolomite apparent.