Agate Amethyst Apatite Apophyllite Calcite Celestine Citrine Corund Fluorite Kyanite Lepidolite Malachite Obsidian Pyrite Quartz Quartzite Rose Quartz Selenite Tiger Eye Tourmaline

Arbitrary

10 mm 28 mm 29 mm 32 mm 33 mm 34 mm 37 mm 40 mm 47 mm 53 mm 77 mm 100 mm

Black gray Blue / light blue Brown / beige Green / light green Multicolor Orange Pink / fuchsia Purple / lilac White / transparent Yellow