"Hourglass" color zoning and hematite inclusions in amethyst / rock crystal

Weight: 9.56 g
Size 31.0 x 19.1 x 15.7 mm


Very well marked color zoning after rhombohedron faces in amethyst crystal.
Also containing tiny ribbons of red hematite inclusions in the colorless part of the crystal.
Fantastic sample for observation of uneven color distribution in gems!

Sample type: unpolished crystal
Origin: Bon Oudi, Tata Province, Morocco