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Product Number: SB14187M
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Unglazed porcelain tiles for streak testing of rocks and minerals. Package of 10 plates, each 1" x 2". More. |
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Product Number: SB14188M
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Thick 1/4" glass plates for hardness testing of rocks and minerals. Package of 10 glass plates, each 1" x 2". More. |
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Product Number: SB26433M
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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 th... More. |