- Origin: Brazil
- Size: H161cm W33cm D26cm
- Description: Two stunning amethyst geodes with hollow concave forms. Very rare bright violet colour and unusual white calcite crystals formation.
- Additional information: Amethyst, a variety of the silica mineral quartz that is valued as a semiprecious gem for its violet colour. Its physical properties are those of quartz, but it contains more iron oxide than any other variety of quartz.