Learn about Blue Diamonds
Among all, blue diamond comes in the top list as one of
the most desirable colors and also as the rarest one. Natural fancy colored
diamonds are very rare and expensive. For illustration, The Hope diamond, which
has been viewed in the Smithsonian Institution in Washington D.C., is the most
famous blue diamond in the world. Moreover, it is also the largest blue diamond
with 45.52 carats.
Natural blue diamond’s jewelry are so rare that most
jewelers have never seen one, and will never own one. Recently, for last few
years, processes and methods have been applied in producing intensely colored
blue diamonds and blue diamond jewelry. It is believed that the process
probably recreates conditions which existed millions of years ago to produce
natural and fancy colored stones. The treatment can only work with a small
minority of diamonds, and involves irradiation them causing the color change,
usually followed by heat treatment to stabilize the color.
Following are list the largest and famous blue diamonds in
the world.
|
Weight
|
Name
|
color
|
Shape
|
|
140.5
|
Regent
|
Faint blue
|
Cushion
|
|
135.92
|
Queen of Holland
|
D color
|
Cushion
|
|
45.52
|
Hope
|
Blue
|
Cushion
|
|
35.56
|
Wittels Bach
|
Blue
|
Old mine
|
|
35.27
|
Sultan of morocco
|
Blue
|
Cushion/Round
|
|
30.82
|
Blue heart(Eugenie blue)
|
Grayish blue
|
Heart
|
|
27.64
|
Heart of eternity
|
Blue
|
Heart
|
|
25
|
Transvaal blue
|
Blue
|
Pear
|
|
14
|
Blue empress
|
Blue
|
Pear
|
|
8.28
|
Chard blue
|
Blue(enhanced)
|
Octagon
|
Everyone must have heard the breaking news of the attempted
Millennium Dome Diamond Robbery. Taking back to the history, there was an
attempt to steal 12 large diamonds valued at a total of pound 200 million, an
average of over pound 16 million each. The most important fact is that eleven
out of the twelve diamonds were fancy colored blue diamonds! The twelfth
(non-blue) diamond weighed 203 carats.
Natural blue diamond’s remain so rare, that it’s next to
impossible to find any. Talking about price, fancy blue diamond’s rings and
blue diamond jewelry are more expensive than ordinary near-colorless ones. The
processing adds to the cost of the blue diamond jewelry (i.e. pendants,
necklace, rings, earrings and so on), so it is generally only worth treating
diamonds of high clarity. The diamonds selected for treatment usually start off
a one of the less desirable colors such as brown or yellow. There is no
certainty about the final color that any particular stone will be after
treatment.
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