This geology science collection includes:18 gem stones, 27 page Rock & Mineral book, 2 velvet pouches (colors vary), and a box.Teaches how to identify 18 different stones. Each stone is hand picked and is approximately .75-1 inch. Examples of stones: Turritella, Amazonite, Aventurine, Tiger eye, Red Tiger eye, Small geode, Leopard skin jasper, Sodalite, Snowflake Obsidian, Gold stone, Blue Howlite, Rose Quartz, Sodalite, Howlite, Amethyst tumbled, Amazonite, Red Jasper, Hematite, Quartz point, Pyrite, Pumice (Floating stone), Lodestone (magnetic!), Small Geode, Sculptured Copper, Amethyst Cluster, Unakite, Bull's eye Jasper and Arrowhead. Please notes: substitutions may be made based on availibility.Our Rock & Mineral book is full of brilliant photos and interesting facts. It is designed to introduce children of all ages to the wonders of minerals and crystals. Dancing Bear is proud to provide our customers with a 100% satisfaction guarantee. If you are not completely satisfied, we will gladly refund your money plus all shipping costs. Each kit is assembled in the USA.by our dedicated team in Eugene, Oregon. We also donate 10% of our profits to charities.