The exceptional beauty, rarity and value of fancy colour diamonds continue to captivate collectors and jewellery enthusiasts alike, serving as an expression of refined taste and financial sophistication. 

The value of fancy colour diamonds has been relatively resilient amid market volatility, underscoring their dual purpose as a luxury product and a store of value, according to the Fancy Colour Diamonds Report released by the Natural Diamond Council (NDC), in partnership with Choron Group and the Fancy Color Research Foundation (FCRF).

Data from FCRF revealed that prices of fancy colour diamonds have grown at a compound annual rate of 5.7 per cent over the past two decades. In 2024, the wholesale value of these coveted gems entering the market reached an estimated US$4.5 billion. 

Demand is primarily fuelled by the gems’ scarcity, as indicated in record-breaking auction sales. Recent highlights include the Marie-Thérèse Pink, a 10.38-carat fancy purple-pink diamond linked to French royalty, which fetched around US$14 million at Christie’s New York on June 17, 2025; and the Mediterranean Blue, a 10.03-carat fancy vivid blue diamond, which achieved US$21.4 million at Sotheby’s Geneva on May 13, 2025.

The report also noted that red, pink, blue and green are currently the most sought-after hues. 

“Pinks have been the strongest-performing colour since 2005, followed by blues. As they exist in greater volumes than pinks and blues, yellows have a more commercial element to them,” it stated.

Leibish Polnauer, president of Leibish & Co, emphasised the significance of colour in determining a fancy colour diamond's worth.

“A diamond’s value is largely determined by its rarity, which includes factors like size, clarity and especially colour. When it comes to fancy colour diamonds, colour is the most important element. Collectors seek out unique pieces with exceptional hues, as even diamonds of the same colour can evoke entirely different emotions,” said Polnauer.