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Blue sapphire, a variety of the mineral corundum, is known for its exceptional hardness and durability. Sapphires are second only to diamonds in hardness (9 on the Mohs scale), making them highly resistant to scratches. However, with time, they can still develop surface wear or fine abrasions as you can see above if exposed to prolonged friction, especially against materials of similar hardness (e.g., another sapphire or diamond). Despite their toughness, sapphires are not immune to chipping or
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