- Sodalite (Var: Hackmanite), Winchite
- Koksha Valley (Kokscha; Kokcha), Badakhshan (Badakshan; Badahsan) Province, Afghanistan
- Small Cabinet, 8.8 x 6.8 x 4.0 cm
Hackmanite is the sodium-rich variety of sodalite and is very rare world-wide. This excellent combination specimen features a sharp, large, 3.5 x 3.5 cm, glassy and translucent, lavender hackmanite crystal set in pearlescent marble and crowned with a rich mass of lustrous, brown winchite. Winchite is an uncommon amphibole group mineral. The hackmanite is a more intense royal purple in daylight and has superb orange fluorescence and also has Sulfur-yellow phosphorescence. Outstanding combination material from the Koksha Valley of Afghanistan and the Ed David Collection.