Bidspirit auction | Natural History - Amethyst Crystal

Natural History - Amethyst Crystal Geode Cut Half Collection [6]. - Comprising six examples with this outer walls and the internal cavity filled with small lavender-coloured crystals. 338 grams total, 50-75 mm (2 - 3 in.). From Brazil.Ex Mineral Imports, London, UK.Gregory, Bottley & Lloyd (Gregory's). [6, No Reserve]