This Geology Testing Kit has all the tools you need to go hands-on and dig deeper into geology! Test mineral hardness, streak color, acid creation, and more with this set of nine testing items. The Geology Testing Kit includes: 1 durable, metal-framed 10-power hand lens 2 streak plates (white and black, each 2" x 2") 1 Sonlight resource: https://www.sonlight.com/products/geology-testing-kit