FT50F6: The crystal is complex, as it combines the basic octahedral with cubic steps creating an Aztec pyramid. Especially notable for the color zoning, light blue in its center and strongly violet on the edges of the cubic faces. The position of the crystal on the matrix of Quartz, Pyrite and Mica make this one really esthetic.
Yaogangxian Mine, Yizhang, Chenzhou Prefecture, Hunan Province  China (1999)

Specimen size: 7.3 × 6.3 × 6.3 cm = 2.87” × 2.48” × 2.48”