Synthetic gem siv lead ua
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Al2O3 99.999% kub daj champagen sapphire khoom corundum
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99.999% Al2O3 sapphire yeeb yuj liab ruby khoom gemstone
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Sapphire Corundum rau Gemstone Al2O3 Crystal Ruby Royal Blue
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Nto ua txoj kev ntawm titanium-doped sapphire siv lead ua laser rods
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Square Ti: Sapphire qhov rais qhov ntev 106 × 5.0mmt Doped Ti3 + lossis Cr3 + ruby khoom
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Lab-tsim rubies / rubies muag Ruby # 5 Al2O3
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Ruby khoom Artificial corundum rau lub pov haum oringinal khoom liab liab
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Pigeon ntshav ruby khoom doped Ti3 + Cr3 + rau lub pov haum saib iav