ABOUT ARGYLE BLUE DIAMONDS
Most natural blue diamonds are rare, but the blue diamonds from the Argyle mine are the rarest of them all. A Blue diamond from the Argyle diamond mine is estimated to be around eight-five times rarer than a pink diamond from the Argyle mine. This fact alone makes a blue diamond from the Argyle mine a standout in any investor’s collection. The Argyle diamond mine sporadically yields blue, grey blue and violet diamonds. But it only yields one blue or violet diamond for every 25 million carats of rough produced.
Natural blue diamonds from other geographic locations are predictably Type IIB and contain the presence of boron. By contrast, the Argyle diamond mine is the only known source of Type IA hydrogen-rich blue, greyish blue and violet diamonds.
Blue diamonds are formed deep within the Earth’s mantle under intense heat and pressure. The process of their formation involves the incorporation of hydrogen or boron into the diamond’s carbon structure during crystallization. The presence of these elements affects the way light is absorbed and reflected within the diamond, resulting in the blue coloration.
Blue diamonds are primarily found in a few select locations around the world. The Cullinan mine in South Africa is known for producing notable blue diamonds, including the famous Hope Diamond. Other significant sources include mines in India and Brazil. Argyle blue diamonds, on the other hand, are extremely uncommon, because of their distinctive violet steel blue colour tones.