Quartz, var. Amethyst, Cristobalite
Posted by: Raymond McDougall on 08.20.2021 | Filed under:

Quartz, var. Amethyst, Cristobalite

Specimen # 201092
Mineral: Quartz, var. Amethyst, Cristobalite
Location: Rio Grande do Sul, Brazil
Size: 5.5 x 3.3 x 2.2 cm

Description

This parallel-growth amethyst crystal features an ivory ball of cristobalite. The amethyst itself is primarily a termination, with the remainder being bounded by angular, tapering striated contact faces. In very good condition, minor chipping. The cristobalite is a glistening ball. A fine cristobalite specimen from the John S. White quartz collection.


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