Blue diamonds, which are extremely scarce have a presence of the rare metalloid boron.
Green diamonds, also very rare, indicate their exposure to radioactivity during their formation. The colour in the news,
Pink diamonds, are almost exclusively mined in the
Argyle mine
in Australia are a result of “the distortion of the internal structure
of the stone” according to John King of the GIA. These diamonds often
fetch record prices in top auction houses across the world. A cut above
all the rest are
Red Colour Diamonds with only a handful recovered and polished to perfection, the most notable of them being the
De Young Red and the
Moussaieff Red.
Black diamonds, which are also unfairly termed as Fancy Colour Diamonds
in the generic trade are generally treated for colour and are actually
found in abundance with price levels of £100-300 per carat. Natural
Black Diamonds are more uncommon but price levels are lower in
comparison to Yellows. In the same instance, with the advent of
technology, Yellow, Blue and Pink Diamonds can also be “lab grown” or
“Treated for colour” which result in severe price reductions. For eg, a
“Treated” Yellow Diamond can be easily sourced for £800-2000 for a one
carat stone. At
Marlows Diamonds, we do NOT recommend purchase of
any “treated or lab grown diamonds”, hence we do not normally stock any
form of treated diamond, unless specifically requested by a client.
Fancy Colour Diamonds, like White diamonds come in a variety of
clarities ranging from Flawless to I2 (being heavily marked) with prices
varying accordingly. Further,
Natural Fancy Colour Diamonds, in
addition to coming in their pure colour form (eg. Natural Fancy Yellow
or Natural Fancy Intense Yellow) also come in different mixed colour
attributes (eg. Natural Fancy Greenish Yellow), showing a mixture of
colours. Many coloured diamonds show some form of fluorescence due to
the presence of additional minerals in them. The rarest and most
expensive are the Pure Colours with None, Faint or Medium fluorescence
as graded by the GIA or IGI. The saturation of colour is also shown on
the GIA report, for eg. Yellow diamonds start from Faint Yellow – Very
Light Yellow – Light Yellow – Fancy Yellow – Fancy Intense Yellow –
Fancy Deep Yellow – Fancy Vivid Yellow (being the most expensive and
most saturated in the Yellow category).
If you wish to find out more or require further knowledge and assistance with buying that one special
Fancy colour diamond of your choice, a visit to
Marlows in the famous
Jewellery Quarter of Birmingham
is a must, as we have one of the largest retail stock of Natural Fancy
Colour Diamonds outside of Bond Street brands with their associated high
price structures. A visit would enlighten you to the actual prices
associated with Fancy Colour Diamonds as they do not have an
international pricing structure like White Diamonds of D-Z colours and
can be extremely frustrating to source, with consumers ending up paying
many thousands of pounds for diamonds worth a few hundred pounds. We
look forward to your visit.
