Stone
Sapphire
Sapphire is corundum in colors other than red, with blue being its best-known variety. At 9 on the Mohs scale, sapphire is highly resistant to scratching and well suited to jewelry worn regularly.
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Sapphire belongs to the corundum mineral family, a crystalline aluminium oxide. Red corundum is known as ruby, while sapphire appears across a broad palette of other colours. Ranking 9 on the Mohs scale and combining excellent toughness with no cleavage, sapphire is particularly well suited to jewellery designed to be worn often.