Collection of colored quartz stone specimens in a clear, hinged box. Rocks vary in size from 1/4" to 1". They are many colors and shapes. the clear storage box snaps open and is 2" x 1 1/2" x 3/4". Quartz is the most common mineral on earth and occurs in many shapes and colors. These quartz samples have been treated to enhance once clear quartz. Each box has approximately 50 pieces of colored quartz in it. For ages 5+.