Colidcolor Moh's Hardness Test Kit 10 Piece Mineral Hardness Kit Include 10 Rock Mineral Specimens and 1 Unglazed Porcelain Streak Plates for Exploring Identifying Studying Geology and Earth Science

£21.42
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Colidcolor Moh's Hardness Test Kit 10 Piece Mineral Hardness Kit Include 10 Rock Mineral Specimens and 1 Unglazed Porcelain Streak Plates for Exploring Identifying Studying Geology and Earth Science£21.42

Colidcolor Moh's Hardness Test Kit 10 Piece Mineral Hardness Kit Include 10 Rock Mineral Specimens and 1 Unglazed Porcelain Streak Plates for Exploring Identifying Studying Geology and Earth Science

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