Pob zeb sapphire ua los ntawm cov khoom siv hluavtaws
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Peach liab dawb sapphire khoom Corundum gemstone rau nplhaib lossis saw caj dab
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Xim av daj violet sapphire Al2O3 khoom siv rau gemstone
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Sapphire ntsuab rau gemstone txiv ntseej ntsuab dag 99.999% Al2O3 hluavtaws
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99.999% Al2O3 sapphire muaj yeeb yuj liab ruby cov khoom siv pob zeb diamond
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Cov khoom siv Ruby Khoom siv dag corundum rau lub pov haum original Cov khoom siv liab dawb
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Pigeon ntshav ruby khoom doped Ti3 + Cr3 + rau lub pov haum saib iav