Natural Black Spinel
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Our factory supply a great quantity natural black spinel, shapes: round, square, rectangle, trapezia, etc. Melting point of the black spinel exceed 1800¡ãC. Generally, natural black spinel can replace black cubic zirconia£¬because natural black spinel remain the same color in the great heat. |
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Natural black spinel square
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Natural black spinel trapezia |
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