Crack open these real Moroccan geodes to discover how stones are formed! Kids of all ages will love the surprise of beautiful crystals hiding inside an unassuming rock.
These small hollow geodes are composed of various forms of quartz. The inner core is commonly the crystaline variety, while the outer skin is made up of microcrystaline quartz or agate. They are formed from volcanic gas balls which cooled and formed hard outer coatings. The inside is mostly hollow with many crystals that formed when the minerals and gases cooled.
Pieces vary in size, but approximately 5 x 5 x 5cm (1.9 x 1.9 x 1.9″)