Natural crystal agate stone gemstone 15 kinds of specimens alarm clock table shape geology teaching materialsProduct descriptionProduct name: 15 kinds of mineral teaching specimens.Product process: grinding and polishing.Stone size: The stone in the box is about 6~15mm, and the rectangular shape is about 2~5cm.Product color: as shown in the picture (in-kind shooting, if there is color difference, please refer to the actual product).Box size: about 110mm (the worker may have a slight deviation in measurement, please refer to the actual product).Product weight: about 45~50g Product material: crystal gem.Contains: 1x ore specimen box (15 types of ore).