All you need to know about pink diamonds

Why are pink diamonds so rare?

Pink diamonds are extremely rare, accounting for less than 0.1 % of the world's diamond production. Unlike colourless diamonds, whose hue is determined by the presence of chemical impurities, the pink colour remains a scientific mystery. Experts believe that this unique hue results from structural deformation of the stone when it is formed under extreme pressure.

Historically, pink diamonds came mainly from the Argyle mine in Australia, which supplied around 90 % of the world's production. However, this mine ceased operations in 2020, making these stones even rarer and more precious. Other sources exist, notably in Brazil, India and Russia, but the quantities extracted remain very limited.

Criteria for the value of a pink diamond

Like all diamonds, pink diamonds are valued according to the criteria of the 4C :

• Colour (Color) The more intense and saturated the colour, the rarer and more precious the diamond. Shades range from pale pink to bright pink and even fuchsia.

• Purity (Clarity) Inclusions can affect the transparency of the stone, although colour is more important than purity in determining its value.

• Size (Cut) Expert cutting maximises the diamond's brilliance and depth of colour.

• Carat (Carat weight) The more voluminous the stone, the more exponentially its price rises, not least because of its rarity.

Pink diamonds in high jewellery

With the closure of the Argyle mine and the growing demand for these exceptional stones, pink diamonds are positioning themselves as an investment of choice. Their value continues to rise, attracting lovers of fine jewellery and discerning investors alike.

The biggest houses, such as Cartier, Boucheron or Tiffany & Coare regularly incorporating pink diamonds into their creations. Whether set as a solitaire on an engagement ring or combined with other precious stones in a necklace or earrings, they enhance each piece of jewellery with their brilliance and uniqueness.