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Product Origin:China
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Description:Features: 1) Reality color up glass bead 2) Color: red, green, yellow, purple 3) Shape: irregular (screen species) 4) Size: 0.8-1.5mm, 1.5-2mm, 2-3mm, 5) Refraction index: 1.30-1.50 6) Specific gravity: 2.50g/cm3 7) Micro hardness:>635kg/mm2 8) M intension:>6