Hue & sparkle
Diamonds are your all-time favourite, but do you sometimes wish your favourite diamond had a hue or two like rubies or emeralds? If you do, take your pick from coloured diamonds, which are all the rge now. Coloured diamonds come in shades of blue, red and green and these gems are both rare and expensive. For centuries, these diamonds have been the prized collection of royalty because of their beauty and extreme rarity;the dramatic increase in their popularity in the consumer market in the last decade is unprecedented. The GIA (Gemological Institute of America)grades these diamonds on the basis of the 4 Cs of diamond value: colour, clarity, carat weight and cut.
The rarest and most valuable coloured diamonds are red, blue, pink and green. The most important factor when evaluating a coloured diamond is the intensity of the colour. Naturally-occurringcoloured diamonds, such as the Hope and Dresden, are very rare and therefore command top prices; diamonds that have been colour-altered by laboratory treatment are less rare, and therefore less valuable. The style of the cut can also influence colour. Mixed cuts can intensify yellow colour in diamonds. Natural pink diamonds are very rare and extremely valuable. Rio Tinto controls the market for pink diamonds from the Argyle mines in Australia. Investors and collectors alike prize them. The 59.6-carat fancy Pink Stardiamond sold at auction for $83,000,000 in November 2013.
Some of the most famous coloured diamonds in the world are:
The Steinmetz Diamond (59.60 carats)or the Pink Star is the finest pink diamond in the world. It was discovered in South Africa. It has been graded as Internally and Externally Flawless, an extremely rare and coveted grade clarity for pinks.
The Hope Diamond (45.52 carat) is arguably the most famous and the largest deep blue diamond in the world.It was originally known as the Tavernier Blue. The Diamond was also the inspiration for the fictional ‘Heart of the Ocean’ in the movie Titanic. It is now kept as an exhibit at the Smithsonian.
Dresden Green Diamond (41carat)was named after the Saxony capital in Germany.It is pear-shaped and the largest of the very rare natural green diamonds. Its green colour comes from natural irradiation.For most of its history, it has remained in Germany.
The Tiffany Yellow Diamond(128.54 carats)was discovered in 1878 in the Kimberley mine in South Africa. It was cut into a cushion shape with 82 facets—24 more than a traditional round brilliant—to maximise its brilliance.It currently resides in the permanent collection of Tiffany and Co.