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GEMSTONE ENCYCLOPEDIA

Ruby

Ruby is the red variety of corundum. Its rich red appearance makes it a recognised choice for statement rings, pendants and special-occasion jewellery. Hardness helps explain its r...

ColourRed
Mohs hardness9
Mineral familyCorundum (Al₂O₃)
BirthstoneJuly

What is Ruby?

Ruby is the red variety of corundum. Its rich red appearance makes it a recognised choice for statement rings, pendants and special-occasion jewellery. Hardness helps explain its resistance to scratching, but toughness, treatments and setting design still matter for everyday care.

History and cultural context

Red gemstones have featured in royal and ceremonial jewellery across different cultures. Ruby is commonly used to express affection and commitment, a tradition rather than a scientifically measurable property.

Colour and appearance

Red

Traditional meaning and symbolism

Often symbolises passion and commitment

Jewellery suitability

Choose the style and setting to suit the specific stone, treatment information and intended use.

Caring for Ruby

Rinse gently and inspect the setting. Treatments can change suitable cleaning methods, so confirm any disclosures before ultrasonic or steam cleaning.

Cleaning guidance

Rinse gently and inspect the setting. Treatments can change suitable cleaning methods, so confirm any disclosures before ultrasonic or steam cleaning.

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References and further reading

  • https://www.gia.edu/gem-encyclopedia

Traditional meanings are cultural associations, not proven medical benefits.

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