Create beautiful polished stones with this wonderful Rock Tumbler and make jewelry keepsakes for friends, family and yourself. Start your tumbling with included rocks and slowly grind and polish your rocks through 4 steps, to a smooth gemlike quality. 8 oz of semi precious stones included. A great set for any junior geologist or anybody who wants to learn how crystals are made This enables you use pointed crystal base to create beautiful acicular (needle-shaped) crystals used to make crystal mobiles and crystalline figures. By using gemstone crystal base (alum), you can conduct an experiment making octahedral crystals Includes 68 page science guide for more information.
Ages 10 & Up