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Focal mix, mother-of-pearl shell (dyed), mixed colors, 38x11mm-57x22mm leaf, Mohs hardness 3-1/2. Sold per pkg of 20. - Fire Mountain Gems and Beads
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provides comparison of total color difference in test of focal position... | Download Scientific Diagram
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Amazon.com: Focal Bundle: 1 Pair of Focal IS690 2-Way 6x9” Component Kit and 1 Pair of Focal IC165 2-Way 6.5” Coaxial Kit : Electronics
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