- Thumbnail, 1.8 x 1.7 x 1.4 cm
- Rossing Mine, Arandis, Swakopmund District, Erongo Region, Namibia
A lovely thumbnail consisting of very fine acicular crystals of umber-yellow boltwoodite. The needles exhibit both a radial growth and a vertical cluster habit not unlike what you see in some palms, and are superb in both color and habit. Tim Blackwood Collection.