Understanding Australian Blue Diamonds. The Rarest of Blue Diamonds.
The Australian pink diamond mine sporadically yields blue, grey blue and violet diamonds. In fact, these certified Australian diamonds can be considered the rarest of all diamonds on the planet. To put that into perspective, for every 25 million carats of rough diamonds unearthed from the Australian pink diamond mine, only a single polished blue or violet stone is produced.
In the 30 years the Australian pink diamond mine known as the Argyle has been operating, just under 112 carats of violet-blue rare diamonds have been certified by the Argyle’s inhouse graders. That represents approximately 1% of the mine’s individually laser inscribed production.
(Jan 2005 – Oct 2019)
Natural Blue, Greyish-Blue, Violet, and Violet-Blue Diamonds
Most natural blue diamonds are rare, but the diamonds from the Australian pink diamond mine are the rarest of all. It is estimated that for every 1.00 carat of certified Australian pink diamond inscribed diamonds, there are 350 carats of natural diamonds on the market. When you consider this diamond in general is 25 times rarer than a pink diamond, this fact alone makes a blue diamond a stand out in any investor’s collection.
Blue and violet diamonds are typically Type IIb due to the presence of boron within the diamond’s structure. However, the Western Australian pink diamond mine is the only known source of Type Ia hydrogen-rich blue, greyish-blue and blue-violet diamonds in addition to the uniquely vibrant cornflower hues.