EB68AK9: The Fluorite crystal, on a Chalcopyrite matrix, although of simple forms, appears relatively complex by combining the basic outline of an octahedron with the staggered cubic forms that form "Aztec pyramid" growths. Especially noteworthy is the color zoning, light blue inside and strongly violet on the edges of the cubic faces.
Yaogangxian Mine, Yizhang, Chenzhou Prefecture, Hunan Province  China (2018)

Specimen size: 4.5 × 4 × 4 cm = 1.77” × 1.57” × 1.57”