Description: Geology Science Kit Collection - 20 mineral and crystal samples Each sample is identified on the collection index sheet Samples measure approximately 4 cm in length Includes: Feldspar / Unakite / Rhyolite / Quartz / Snowflake Obsidian / Kaigao Stone / Kaolin / Siltstone / Picture Jasper / Jade Conch / Iron Quartzite / Inlaid Stone / Wood Grain Stone / Red Ochre / Mica / Lithium Mica / Dumortierite / Manganepidote Perfect for the young science enthusiasts and geological study Package Includes: 20Pcs Crystal & Mineral Collection with Box