9211 - 9213 - STREAK PLATES - WHITE 10 PACK (9211) or 12 PACK (9213)

These 1"x 2" unglazed porcelain tiles are ideal for streak testing minerals. The streak test is essential in mineral identification because it retains the color of the mineral. Package of 10. Grades 4+, Ages 9+. Geology is a required STEM subject.