You should always buy pink, or for that matter any coloured, diamonds from a vendor that has high resolution photos available. There can be a lot of variation in the colours even with a specific GIA colour grade.

According to FCRF, pink diamonds are growing in value more than any other colour, with values rising 116 percent between 2010 and 2019, despite a 0.9 per cent dip between Q4 2019 and Q4 2020. The vast majority of the pink Argyle diamonds unearthed are very small and fall under the category of melee goods.”

The Argyle Mine In the past 11 years especially, many of the pink diamond prices have increased by 367%, making them a hard and stable investment, and one that clearly shows strong growth.

As a result of their extreme popularity and considering how rare these diamonds are, the value for natural pink diamonds continues to increase. Similar to all other fancy colored diamonds, the larger the carat weight and better the cut, color, and clarity the more expensive the stones will be.

A diamond tender is an auction hosted by major mining companies as a way to sell their rough and polished diamonds, as opposed to diamonds sold through direct negotiations or sightholder systems (a sightholder is one of 93 companies on the De Beers Global Sightholder Sales (DBGSS) list of authorized bulk purchasers of …

Despite this, the increasing operation cost and a stagnant diamond market, are forcing Argyle mines to close by 2020. Another reason for the closure is that the mines are so deep now that further excavation is unviable. The pink diamond market is lucrative, but it is no longer a sustainable enterprise for the group.

Reason for the closure The diamonds mined in Argyle are of average to low quality. Despite this, the increasing operation cost and a stagnant diamond market, are forcing Argyle mines to close by 2020. Another reason for the closure is that the mines are so deep now that further excavation is unviable.

As expensive as “regular” pink diamonds are, certified Argyle pink diamonds are even more expensive. While a 1 carat fancy pink (not a round) could go for roughly $140,000 to $180,000—depending on the quality of the color—a similar Argyle stone would easily fetch over $200,000.

Interest in Argyle pink diamonds certainly expands beyond the activity surrounding tenders. Over the past five years, GIA’s laboratory has produced custom monograph reports for exceptional diamonds, colored gemstones, pearls, and jewelry pieces. One such monograph was created in 2010 for the Majestic Pink Diamond Bracelet.

While most of the diamonds tendered over the years have been pink and purplish pink, a few reds (and even other colors such as blue, violet, orange, and yellow) are occasionally offered. The first tender, consisting of 33 diamonds, took place in Antwerp in 1985.

Argyle Diamonds Ltd. was formed by the parent company CRA Ltd., later Rio Tinto Ltd., to develop the mine and market the product. This mine became one of the world’s largest sources of diamonds (Bevan and Downes, 2004), including a small production of valuable pink to red stones (figure 1).

Over the past three decades, more than one thousand pink diamonds from Rio Tinto’s Argyle mine in Western Australia have been offered for sale at annual invitation-only events known as tenders. These diamonds, selected from the mine’s large annual production of rough, are cut and polished at the company’s factory in Perth for the tenders.