Unglazed porcelain tiles for streak testing of rocks and minerals. Package of 10 plates, each 1" x 2".
Product Number: SB14187M
Thick 1/4" glass plates for hardness testing of rocks and minerals. Package of 10 glass plates, each 1" x 2".
Product Number: SB14188M
Black Streak Plates
These 1" x 2" unglazed black porcelain tiles are ideal for streak testing of light colored minerals. The streak test is essential in mineral identification because it allows the color of the mineral to be obtained. Package of 10.
Product Number: SB26433M
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