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Color
Diamond
Colored Diamonds
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colored
diamonds, color diamonds
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Why diamonds have colors.
Colors
often give the
special touch to make the
gemstone a real beauty.
A yellow diamond with a good
saturation is for sure
something special, but in
resent years a pink diamond
got somehow more attention,
its some kind of fashion
after several celebrities
were seen wearing pink
diamonds rings. Black
diamonds are even more
mysterious and are very
rarely to be seen.
A color stone need a bit
of physics to consider
(no math needed, so don't
jump away) As light is some
kind of energy and this
energy is enough to push
some electrons from one
energy level to another
certain light with a
particular wavelength is
absorbed, this is not
particular to a diamond,
this is everywhere in
nature.
In a pure transparent
stone no light is
absorbed, on contrary, a |
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black stone absorbs all
light, no absorption is
colorless (or
white) and all absorption is
black. The less light the
gem absorbs the rarer
and of higher value it is.
Most of the called
"colorless" diamonds have
some inclusions and are not
perfect transparent, but
this inclusions often are
only visible with a
microscope.
A color diamond
means
some kind of impurity,
these impurities give a
distortion to the light and
the electrons jump to
another energy level means
certain light with a
particular wavelength is
absorbed and we see this as
a color diamond.
An impurity
absorbing wavelength
of 560 nm brings
this is in the green blue
and purple spectrum brings a
yellow color. Has the
diamond an
impurity in the 500
nm range green,
yellow and orange
are absorbed which
finally means red
color, the result is
a blue diamond with
a rather cyan shade.
Just as fine
contaminants can
trigger the effect
of color; it can
also cause defects
in the diamond
structure, usually
we see a combination
of all together in
this beautiful
stones. Colored diamonds
sometimes look much
better than
colorless stones,
the question is how get the
gem the
colors? This can have
several reasons.
One of |

Colored Diamonds
with yellow diamonds
and pink diamonds
colored gem |
the most common
reasons for colored
diamond are
impurities trapped
in the colored gem
during
formation, a
other reason is the
crystal structure of
the color diamond, and
sometimes the
influence to
radiation can all
lead to different
colors. If the come
into contact with
radioactivity
some gems develop a green
coloring. It might
take about a million
years or longer to
form fancy diamonds. Spots or
larger surface coloring
can be removed during
the cutting
process.
Heath treatment of a
diamond
with around 600
degrees Celsius
might also cause a
diamond to turn
green. Higher
temperature could
turn the diamond
stone into yellow or
brown. Black
diamonds are
sometimes found in
Brazil and the
Central
African Republic,
they needs
a very special environment with trace elements of nitrogen and hydrogen. |
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There are indications that black diamonds could have been formed in the space by
carbon-rich cosmic dust and came to earth enclosed in meteorites,
in those stones is
no colored gem. |
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Pink Diamond Ring Fancy diamonds |
Pink diamonds comes in shades ranging from rose to purple. A pink diamond in particular from the Argyle Mine in Australia have been sold for even about $ one million per carat. Unlike usual diamonds which get their color from impurities embedded in the pink diamonds get the color by a process called plastic deformation.
A Pink diamond have only minimal nitrogen
impurities inside; they receive their colors by structural deformation by the intense pressure during the crystal growth. This changes the lattice |

Pink Diamond from the Argyle Mine |

Blue Diamond
color
diamonds |
structure of diamonds and led a whole spectrum of red to pink. At blue colored diamonds, on the molecular level some nitrogen has been replaced by boron, boron reflects the blue light of the spectrum. More boron means more blue.
Yellow color means, some carbon molecules have been replaced by nitrogen, this will not alter the structure of the diamond but the clarity and color will be changed.
The amount of yellow color in the diamond depends on the amount of nitrogen.
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Yellow Diamond and Pink Diamond Ring |
Clarity of a diamond
is one of the main factors producing the fire and reflections of a diamond. The basic inside structure of a diamonds are prisms capturing the light and reflect it back and forth several times, before the light come off the diamond stone.
Clarity means how "clean" the diamond is. Clean diamonds have very few minor inclusions of gas, liquid, and minerals.
Inclusions cause an interruption
in the flow of light through a diamond and naturally the better the flow of light through the diamond is –minor inclusions- the better the clarity of that diamond.
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Black Diamonds colored diamonds and pink color diamond plus fancy diamonds |
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Yellow Diamond Ring colored diamonds |
Of course there are also other parameter such as cut and polishing doing the reflection and fire but the clarity is where an excellent diamond starts.
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Color
Diamond ring with Asscher cut. |

Princess cut diamond ring with good clarity |
Inclusions interrupting the light flow
through the diamond can be very small, you probably can’t see them without a magnifying glass or microscope but they are there. If there are no inclusions in a diamond it is a lab created diamond called cubic zirconia. This created diamonds are grown in the lab and have a perfect clarity without inclusions, actually physically those artificial diamonds are real diamonds but they come from a different place. Inclusions make the gem look somehow cloudy.
Since most of the people cant look through this fancy diamond evaluation in a qualified way it is advisable to take an expert with you when buying a diamond, diamond ring, diamond earring etc. but don’t let the “expert” to move you into a particular shop, since he might have a friend there. You should go around and have a look to find what you like, after you get an diamond consultant, go back to this shop and ask him to have a look for the gem you like. This way you have a |
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good chance to get a good diamond buy. Since more and more people see the beauty of color diamonds in jewelry such as engagement rings, bands, earrings and other precious items, growing demand in colored gems is the result. Especially color always plays an important role when buying all kind of body decoration, they also talk in terms of fancy diamonds this is an extended choice to the more normal white diamonds. Its different to the common precious stones the people usually buy. Those fancy stones won’t come less expensive, actually most are more expensive than other clear stones. Notable pink diamond, blue and green gems fetch higher prices.
We already indicated above why there is a color in the gem, because of inclusions of trace elements included in carbon during the creation of the stone. On the other hand it opens the way for manipulation since certain stones such as with brown color can be treated with heat to get a better and more clear shining. If it is told to the customer at the end that is are treated gems its ok since also the price is lower, but mostly the seller won’t tell, that’s a cheat then because after wearing the precious piece for a couple of years the gem will deteriorate somehow and this will be visible, after it has no value anymore.
A excellent option to buy some colored stones
with a small budget would be to purchase jewelry with synthetic colored diamonds also called CZ, this stands for
cubic zirconium which actually is physically a true diamond but made in the lab where carbon is pressed together under immense pressure to form the wanted stone, adding certain impurities during the process creates different shades.
Whatever gem you buy the basic evaluation parameter are color, clarity, cut and weight in carat. For fancy diamonds color is determined by the hue and the intensity, usually more intensity more expensive some diamonds have an additional basic shade which can intensify the overall color, shapes and cuts are more or less the same as with colorless stones. Since the price of a particular diamond
jewelry gives a indication how good it is supposed to be, be very careful if someone offer you cheap jewelry, because cheap jewelry can’t be good.

Lesotho One Diamond Ring |

Blue diamonds color diamond fancy diamonds |
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colors of diamond |
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