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Material: Diamond

Diamond is the hardest and one of the most prized gemstones in the world. Formed deep within the earth from pure carbon under extreme pressure and heat, it is known for its exceptional brilliance and unique ability to refract light. A symbol of purity and eternity, it is often used for engagement rings, a symbol of love and high-end jewelry.

History and traditions

Discovered in India over 2 years ago, diamonds were once considered sacred stones, reserved for gods and kings. In the Middle Ages, they were believed to have protective properties. Since the 500th century, they have become the icon of engagement rings, thanks to iconic advertising campaigns such as “A Diamond is Forever.”

Technical properties

  • Hardness : 10 on the Mohs scale, the hardest material known.
  • Density : 3,5 g/cm³.
  • Refractive index : 2,42, giving it its exceptional brilliance.
  • Cleavage : perfect, meaning it can split easily along certain crystal directions.
  • Stability : resists wear, heat and common chemicals, but may be sensitive to impacts on its edges.

Working and formatting methods

The rough diamond requires careful work to reveal its beauty. The techniques used include:
  • Size : The diamond is faceted to maximize its brilliance and fire. Common shapes include brilliant (round), oval, princess, pear, and emerald.
  • Cleavage : traditional technique for dividing rough stone.
  • Polishing : to obtain a perfectly smooth and reflective surface.
The quality of the cut directly influences the value and brilliance of the diamond.

Maintenance and conservation

  • Clean regularly with warm water, mild soap and a soft-bristled brush.
  • Avoid contact with harsh chemicals, such as chlorine.
  • Store separately or in a pouch to avoid scratching other stones or jewelry, as its hardness can damage other materials.

Sustainability and ethical sourcing

  • Extraction : the main producers are Russia, Botswana, Canada and Australia.
  • Environmental impact : Mining can have significant consequences, but efforts are being made to limit its impact.
  • Ethical Sourcing : Diamonds certified by the Kimberley Process guarantee that they do not come from conflict zones. Lab-grown diamonds offer a sustainable and ethical alternative.

Uses in jewelry

Diamond is essential for:
  • Engagement rings : solitaire or pavé setting.
  • Necklaces and pendants : central stones or delicate inlays.
  • Earrings : creoles or studs.
  • Bracelets : ornate rushes or tennis styles with multiple diamonds.

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