BEADNOVA Gemstone Rock Collection Kit for Kids Geology Science Learning with Magnifier Reading Glass (Pack of 20pcs) A MUST ROCK COLLECTION: This unique & educational rock collection of polished gemstones is a must for the beginner or seasoned gemstone collector, and Perfect for young science enthusiasts, especially those with an interest in geology. SIZE RANGE: The Size Range of Rock Samples is between 3/8 - 1/2 inch; Kindly Note: All stones are unique and natural may vary from the one shown in the picture. A WIDE VARIETY OF GEMSTONE ROCKS: Comes with 20pcs different Gemstone Rocks (includes 20pcs of those gemstones: Carnelian, Howlite, Aventurine, Hematite, Lapis, Amazonite, Pyrite, Citrine, Amethyst, Tiger Eye, Garnet, Mookaite, Indian Agate, Botswana Agate, White Howlite, Rock Quartz, Apricot Agate, Rose Quartz, Leopardskin Jasper, Blue Lace Agate, Turritella Agate, Yellow Aventurine, Dalmatian Jasper, Orange Calcite) PACKAGE INCLUDES: 20pcs Rock Specimens + 1pc Magnifier (Which can observe, learn to test, classify and identify different kinds of rocks, educational and fun) with box packing PERFECT GIFT FOR YOUR KIDS: Great gift for kids (Age 5+), for stone collectors, geology studies, desktop decoration; Challenge your children' imaginations and keep them active