Pink Argyle Diamonds – The Rarest in the Diamond Family
Pink Argyle diamonds are a rare commodity and a breed apart in the diamond family. They were first discovered in India in the Kollur mines in the 16th century and were subsequently found in the 17th and 18th century in the Minas Gerais region of Brazil. However, at present, about 80% of the world’s production of pink diamonds are found in the Argyle Mine, Kimberley, Western Australia.
The reason behind the rarity and the high cost of pink diamonds from Argyle can be understood from the fact that of the 20 million annual carat output of the mine, only 0.1% are classified as pink diamonds.
Hence, the world largely depends on the production from the Argyle mines to meet its demand for this exclusive and rare type of pink diamonds. After the diamonds are cut and polished, the quantity becomes still smaller and hard to come by pushing up its exclusivity even further.
Numerous theories have been expounded on the origin of pink diamonds as distinct from the more common white and bright diamonds. The general hypothesis is that pink diamonds are formed due to the extreme and often violent pressures and fluctuation on the earth.
A different theory is given for Argyle pink diamonds. It is thought that a seismic shock pushed colourless diamonds to the surface thereby altering their molecular structure and turning them pink.
The Rio Tinto Group owns the Argyle Mine in Kimberley. They also have a controlling interest in the Diavik Diamond Mine in Canada and the Murowa Diamond Mine in Zimbabwe.
However, the Kimberley Argyle Mine is the world’s largest diamond producer by volume. It is the only commercially and economically viable producer of pink and red diamonds in the world as well as a large proportion of other naturally coloured diamonds such as cognac, champagne and the very rare blue diamonds.
It takes over a year and the collective efforts of many individuals to complete the process of bringing Argyle pink diamonds from almost billion-year-old rough stones to settings on exquisitely manufactured pink diamond rings.
The company employs Fair Trade Practices as laid down by the Responsible Jewellery Council of which Rio Tinto the owner of the Argyle Mine is a founding member. It is an assurance that every certified pink diamond from the mine is ethically sound and sustainable in addition to its beauty and rarity.
This attribute has led pink Argyle diamonds to be awarded the prestigious Butterfly Mark accreditation by Positive Luxury in 2017.
The uniqueness of pink diamonds from the Argyle mines lies in the certification programme initiated by the company in 2005 for its diamonds over 0.20 carats (twenty points) and for other gems over 0.15 carats (fifteen points) in 2009.
These diamonds are laser-inscribed with a unique identification and lot number which is visible only under high magnification. They also come with an Argyle Pink Diamonds Gem identification and Authenticity Document. All this is a guarantee from the company that every pink diamond produced at the Argyle mine has been in the care of trusted partners of the company.
It is tough to find a pink diamond produced outside the Argyle mines that can match it for brilliance, luminescence and intensity of colour.
Pink diamond rings are considered to be an investment for the future because of their value and uniqueness. Here is a buyer’s guide for pink diamond rings.
Choose a Reputed Store
Given the cost of pink diamonds, you cannot go wrong if you buy pink diamond rings or other jewellery from a reputed store. You can bank on Australian Diamond Company – ADC - store in Melbourne as they have been in this trade for over 30 years.
Sales people at the store will guide you on the cut, carat and colour as well as gradation of pink diamonds. They will also help you choose a perfect piece of pink diamond jewellery from the wide selection on offer. Other stores that you can safely depend on are Hardy Brothers in Brisbane, Perth and the Gold Coast and Jan Logan in Sydney.
Colour Range of Pink Diamonds
As stated in this resource page, colored diamonds are produced because of the defects in their crystalline structure. It affects how light is transmitted and absorbed by the stone and seen by the viewer.
The grading of pink diamonds range from faint and very light pink to progressively darker hues of intense pink and deep/dark pink. The quality of each stone is assessed based on hue, saturation and tone.
The first relates to the primary and secondary colours, saturation is related to the spread of the pink colour within the stone, and the last that is tone is the density of the colour. The darker and more intense the shade is, the higher will be the cost of pink diamonds.
These are some of the factors that should be taken into account when buying pink diamond jewellery.