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Argyle mine diamonds

The Argyle Diamond Mine is a diamond mine located in the East Kimberley region in the remote north of Western Australia. Argyle is the largest diamond producer in the world by volume, although due to the low proportion of gem-quality diamonds it is set to close by 2020. It is the only known significant source of pink and red diamonds, producing over 90% of the world's supply.It additionally provides a large proportion of other naturally coloured diamonds, including champagne, cognac and rare blue diamonds.

Argyle Colour Diamond Intensity :

While the 4Cs (Color, Clarity, Cut and Carat) pertain to Argyle diamonds as much they do to other diamonds, the Argyle diamonds has devised their own system of grading color.


Pink diamonds have been almost exclusively found at the Argyle Diamond mine in the Kimberley region of Western Australia for the past three decades. Argyle pink diamonds are so rare that of every million carats of rough diamonds produced at the mine, a mere one carat is suitable for sale. For this reason, it is perhaps the most sought after diamond in the world, fetching up to 100 times the value of an equivalent white diamond. They are purchased, owned and loved by only a fortunate few.

Argyle pink diamonds are rare and highly collectable treasures, competitively sought after by investors, jewellers, celebrities and those simply seeking a truly irreplaceable heirloom. While it is understood that nitrogen gives yellow diamonds their colour, and boron gives blue diamonds theirs, we are still unsure of exactly what gives pink diamonds their rosy hue. It is believed that as pressure raises the diamond closer to the earth’s surface, the diamond’s structure becomes altered, thus giving it its unique tint. An unfortunate side-effect of this pressure means that more inclusions are often found within pink diamonds, although their colour helps to disguise these.

The pink diamonds are divided into four categories: PP (Purplish Pink), P (Pink), Pink Rosé (PR) and PC (Pink Champagne). Then, the diamonds are graded based on their color Intensity ranges from 1 (HIGH) to 9 (LOW).


Extremely rare and highly sought by collectors, blue diamonds are another coloured diamond found within the Argyle diamond mine. Their blue tint is due to a unique mix of less than one boron atom per million carbon atoms, giving them a clear, cool colour reminiscent of the ocean. Blue diamonds are highly sought the world over due to their scarcity. After two years of mining the Kimberley Argyle Diamond mine, there were just 250 carats of blue diamonds; barely enough to fill up a couple of teaspoons.

The blue diamonds are graded as BL1, BL2, BL3, BL4 and so on.


Champagne diamonds truly are something to celebrate. They come in a variety of brilliant shades, ranging from light champagne through to burnished and rich brown hues. Their gentle, earthy hues are becoming increasingly popular with collectors, connoisseurs and celebrities alike, yet they are still one of the most affordable coloured diamond choices. Approximately 80% of the diamonds produced by The Argyle diamond mine in Western Australia are champagne diamonds, all with unique colour and intensity variations.

Unlike the four C’s of colorless white diamonds, the strength of colour is the most important factor in determining value in champagne diamonds.

Argyle Diamonds has devised the C1,C2,C3,C4,C5,C6 & C7 colour scale to grade this type of diamond in particular.

Lighter and pink-tinted champagne diamonds are highly sought, as they sparkle and scintillate more readily than darker tones. Champagne diamonds are neutral and wear well with any outfit, making them popular for everyday jewellery pieces that can be passed through the generations.

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