Tag: Black Prince’s Ruby

• Spinels: A Cheaper Alternative

  

  An Introduction Spinel has a lower hardness than both sapphire and ruby on the Mohs’ scale of hardness. Its uniqueness derives from its presentation in many colours, sharply pointed crystal shape, and natural sparkle. These characteristics make it similar to diamonds, due to both being in the cubic crystal system. They also are a major…

  Publication, Spinel

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