Argyle Coloured Diamonds Review

Wednesday, 1 July 2020
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Argyle Coloured Diamonds Review

Argyle Coloured Diamonds Review

Argyle Mine Closure

The closure of the Argyle diamond in November 2020 has led to a significant reduction in supply of coloured diamonds.Let’s take a closer look at the diamonds available in this Argyle Coloured Diamonds Review .

What are the implications of the mine’s closure?

The Argyle Diamond Mine has been the most important source of pink diamonds with the mine producing 90 – 95% of the world output. They are rare as only one in every 10,000 diamonds has natural colour and can be legitimately called a coloured diamond.

What is the number 1 feature to buying a coloured diamond?

The number one criterion for buying a coloured diamond is the intensity of the colour along with the distribution of the colour throughout the stone. The more depth and intensity of the colour, the rarer the diamond, and consequently the more valuable. The second is the diamond size is measured in carats (It’s weight) and after colour this is the aspect that has the impact on price and value. To view our collection of diamond jewellery please click here. In the mining process larger stones are found far less frequently than smaller ones making the larger stones rarer and more valuable. Prices for larger stones increase exponentially in relation to their carat weight.

Other important things to consider when buying a coloured diamond

The clarity of a coloured diamond is far less important as any inclusions are masked by the colour and so do not affect the clearness of the stone. Because colour intensity is so important in all coloured diamonds, they primarily are cut to emphasise their colour. This contrasts with colourless diamonds that are cut to maximise sparkle or brilliance, which in some instances can detract from the natural colour of a coloured diamond. While coloured diamonds still exhibit brilliance, colour is the most important characteristic considered when they are being cut.  The usual criteria for white diamonds such as cut and clarity are not as important and often coloured diamonds will not be a traditional regular shape. This means that many coloured diamonds are cut into non-traditional shapes in order to enhance their natural colour.

Argyle Coloured Diamonds Review by Colour

The range of colours now available in diamonds has excited gemmologists and buyers since they became popular about 30 years ago. Diamonds have always been the ultimate symbol of love and the traditional solitaire engagement ring was what many young women dreamed of. Fortunately for women there are now new ways in which their partners can express their feelings and reignite their relationships!

Argyle Pink Diamonds

buy argyle pink diamondsPink Diamonds – Probably the most iconic of the coloured diamonds and found almost exclusively in the Argyle Diamond mine. As colour is the most important aspect of pink diamond, Argyle diamonds have their own system of grading colour. The pink diamonds are divided into four categories: PP (Purplish Pink), P (Pink), Pink Rosé (PR) and PC (Pink Champagne). Once the colour is establish the diamonds are graded based on their colour intensity. This ranges from 1 (the highest) to 9 (the lowest). Apart from the primary colour of the stone some pink diamonds can include a secondary colour of orange, purple or brown. To fully understand what you are buying please ensure you consult with a reputable Argyle diamond expert.

Argyle Red DiamondArgyle Red Diamonds

Red Diamonds – The rarest of all coloured diamonds and are considered the most value and commanding premium pricing. Red diamonds have no varying levels of intensity of colour with the most sought after being stones with the absence of secondary shades such as purple and orange. Gemmologists have been unable to determine the origin of the red diamonds colour and this adds to the fascination and desire to own one. Red diamonds are the only coloured diamond that is not graded using terms like Vivid, Intense or Fancy. The grading is based on whether there are other modifiers present in the stone and effect they have on the red colour. The presence of a purplish red overtone is regarded by many as the most appealing however, other modifiers are orange and brown, which are at the lower end of desirability and therefore value.

Argyle Yellow Diamonds

Argyle Yellow Diamonds

Yellow Diamonds – The standard colour grading scale for White diamonds ranges from D to Z, with D being a colourless diamond and Z exhibiting a noticeable yellow colour. If this scale were extended with the intensity of the yellow colour increasing then the scale would run to Fancy Vivid Yellow Diamond. The source of the yellow colour comes from the presence of Nitrogen in the stone. As with all natural things as the amount of Nitrogen varies the yellow colour ranges from a light to dark shade. A pure natural yellow diamond is referred to as Canary Yellow diamonds. Less pure stones can include shades of orange or brown in varying levels of intensity. Yellow diamonds are fairly common and as such can be more affordable than other coloured diamonds. For this reason there is a standard grading scale as follows; Faint, Very Light, Light, Fancy Light, Fancy, Fancy Intense, Fancy Vivid, Fancy Deep. Calculating the price of a yellow diamond is not straight forward, as a very small tint of brown will reduce a yellow diamond’s value. On the other hand the presence of green or orange tints can significantly increase the value. Even though there is a comprehensive scale it is still a difficult task to accurately grade each stone and as with any diamond purchase know and understand the seller.

Argyle Blue Diamonds

Argyle Diamond Colour ChartBlue Diamonds – The second rarest diamond after red diamonds, along with blue diamonds, accounting for less than 0.1% of total world coloured diamond production. The amazing blue colour is due to the presence of boron when the diamond was formed. Like yellow diamonds blue diamonds have a grading scale that starts at Faint Blue, Very Light Blue, Light Blue, Fancy Light Blue, Fancy Blue, Fancy Intense Blue, Fancy Deep Blue and Fancy Vivid Blue. In terms of assessing the value of a blue diamond being similar to a white diamond with value is based on its 4Cs (Cut, Colour, Clarity and Carat). The most important factor in assessing value is by far colour. Pure blue diamonds are very rare and generally magnificent; it is more likely the stone will have green-blue or gray-blue hues, although other colour combinations are certainly possible. Blue diamonds, because of the extremely limited supply make excellent investments for investors. 

Argyle Green Diamonds

Argyle Green DiamondsGreen Diamonds – Green diamond’ colour is the result of the exposure to radioactivity that the stone endured over millions of years. Although the green colour results from exposure to radioactivity, the stones are not radioactive so they do not pose a health risk to their owners. This exposure to radio activity is incredibly rare with the result that green diamonds are difficult to find. Green diamonds range from a light green to a rich, deep hue. The grading system runs from; Faint Green, Very Light Green, Light Green, Fancy Light Green, Fancy Green, Fancy Intense, Fancy Vivid and Fancy Deep. As with all coloured diamonds pure green diamonds are preferred, but most of the stones contain secondary hues including the following, yellow, blue, brown, and grey, or a combination of two or more colours. Green diamonds are the fifth rarest and consequently command high prices.

Argyle Black Diamonds

Argyle Black DiamondsBlack Diamonds – They are quite common and it should be noted that there are two main types of black diamonds, natural black diamonds and diamonds that have been artificially treated to become black. Black diamonds colour is due to the inclusion of graphite in the formation process. Black diamonds are characterised by having large numbers of inclusions being small blemishes which have less brilliance. These flaws interfere with the path of light through the diamond and affect a gemstone’s appearance. The huge number of inclusions colour the entire stone black, sufficient to be considered a gemstone. Black diamonds are considered the hardest of all coloured diamonds. The major use for black diamonds is for jewellery rather than as an investment. The stones tend to look best when paired with a contrasting colour metal like white gold or platinum. Examples of current types of jewellery include black diamond engagement rings, earrings, bracelets and other high-end jewellery. Unlike other coloured diamonds black diamonds are found in only one colour intensity: Fancy Black. Similar to white diamonds the 4Cs (cut, clarity, colour and carat) should all be considered when purchasing a black diamond gemstone. Take account of these factors to determine the quality of a black diamond. One point to consider is that the black colour is fully saturated throughout the stone. Due to the difference between natural stones and stones treated to become black be extremely careful that you get the quality and stone you are expecting.

Argyle Orange Diamonds

Argyle Orange DiamondsOrange Diamonds – Orange diamonds are similar to yellow diamonds in that the presence of nitrogen within the diamond is the main source of the orange colour. The difference is that in an orange diamond the stone absorbs hints of blue and yellow light, thus creating an orange colour. The colour intensity levels for orange diamonds range from, Faint Orange, Very Light Orange, Light Orange, Fancy Light Orange, Fancy, Fancy Intense Orange, Fancy Vivid Orange and Fancy Deep Orange. The deeper the colour the more desirable. A pure orange diamond, which has no other hues is considered among the rarest stones that exist and consequently extremely valuable. The presence of a secondary colour in the stone results in a dramatic reduction in price. The majority of stones have a secondary hue usually brown, yellow, and pink or combinations of two or more.

Argyle Purple Diamonds

Argyle Purple DiamondsPurple Diamonds – As with all coloured diamonds an impurity provides the purple colour and it is believed that large amounts of hydrogen and boron are present within the stone. These elements combine to give the stone its purple hue. Purple diamonds can be colour treated so be very careful if you are looking to purchase one and ensure your jeweller fully understands coloured diamond idiosyncrasies. Purple diamonds are graded as follows with the deepest colour intensity commanding the premium prices; Faint, Very Light, Light, Fancy Light, Fancy, Fancy Intense, Fancy Vivid, Fancy Deep. There are very few pure purple stones and most stones have a secondary colour with most common being pink, grey although stones exist with red and brown secondary colours.

Argyle Champagne Diamonds and Argyle Cognac Diamonds

Argyle Cognac Diamond - Argyle Champagne DiamondsBrown Diamonds Champagne and Cognac – Champagne and Cognac diamonds are naturally occurring diamonds, ranging in colour from a warm straw gold to a deep chocolate colour. They were originally known as brown diamonds and are considered lower coloured diamonds due to their relative abundance. Argyle Diamonds realised the intrinsic beauty in these colours and promoted Champagne and Cognac diamonds to the world. There is a grading system for Champagne and Cognac diamonds with a range from C1 to C6, where one is the lightest colour and six the most intense. Champagne diamonds graded C1 and C2 are light champagne, C3 and C4 medium champagne, and C5 and C6 dark champagne. Diamonds graded C7 are considered Cognac coloured, as they exhibit the most intense, deep brown colour. The main use for Champagne and Cognac diamonds is in jewellery and due to their abundance, they are very rarely purchased as an investment. They are included here as they are a coloured diamond.


This review is intended to provide good and relevant background information for diamond lovers and investors to understand the different options. For more information on the Argyle Mine Click Here. Please contact us if you have any interest in coloured diamonds for jewellery or investment and we will be happy to help and guide you to achieve your objective.

Author Bio.

Jill Hansen runs Anastasia’s Of Broome and is a highly recognised expert in both the fields of South Sea Pearls and Diamonds. Jill trained in seeding pearls in the Cook Islands by Japanese Pearl Technicians, and established a wholesale pearl business selling pearls all over the world. She pioneered the combination of pearls and diamonds to create Lust™ Pearls, a unique fusion of these two beautiful gemstones. Jill holds the prestigious recognition of being an Antwerp Diamond Broker for selecting and sourcing Diamonds direct from the diamond capital of the world, Antwerp. She is a diamond expert and is happy to use and impart her knowledge to help customers make informed decisions.


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