VERY LARGE AND RARE HALF GEODE AMETHYST FORMATION RESEMBLING SOUTH AMERICA WITH CALCITE FORMATION ON METAL STAND

This is a stunning and unusual half geode, with a natural shape reminiscent of the map of South America. In this piece it is possible to see the layers of minerals in the order they naturally formed, from the rough basalt with traces of polished agate, to the amethyst crystals at the centre. The crystals in this formation vary in size and shape and are adorned with a very rare calcite formation with white quartz overlay. Calcite formations on amethyst are rare, owing to different formation temperatures required for the two minerals to occur. The frame of this beautiful piece is a polished border of agate and celadonite, which introduces hues of grey-blue, pinkred agate, and white quartz, resulting in a gorgeous natural combination of colours and shapes. On the polished front face, it’s also possible to appreciate the remains of further calcite. In the parts of the stone where agate is present within the basalt, these have been polished to create a beautiful tactile contrast between rough, smooth and sharp.