ore sapphire white background |
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| navigate by keyword : africa aggregate aluminum azurite background blue blur central cluster copper corundum crystal crystalline expensive gem gemmy gemstone geology glass glassy hexagonal hydrothermal little matrix mine mineral mineralogy namibia ore oxide pegmatite rare raw rock sample sapphire small specimen stone strontium sulphate treasure union valuable value white |
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| is a precious mineral of the corundum group with characteristic blue color, It is one of the four most important gems in the world and the most beautiful. |
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