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Diamonds at first sight might look the same, but in actual
fact they are very different. Our trained and experienced
staff at Jacobson's Jewellery can educate you to help you
understand why two diamonds of equal size may have different
price tags.
See our Diamond
Characteristics Chart
Diamond Selection
Diamonds for centuries have captivated the hearts and minds
of people from all parts of the world. Diamonds represent
images of rarity, precious, desirable, beautiful, mysterious,
magical sparkyling and above all tokens of love.
If you are planning on buying a diamond you are about to
become part of a world of romance, beauty, legend and history.
Its absolutely appropriate that diamonds have become the
ultimate gift of love due to three major factors. Firstly
diamonds are durable. A diamond is the hardest substance known
to man, making it resistant to deterioration. When cared for
properly, diamond jewellery can be worn every day and passed
on as an heirloom to the next generation and then onto the
generation after that. Secondly, diamonds are rare. Even though
new resources for diamonds are being explored and discovered,
the supply of these gems remains limited. And thirdly, diamonds
have enduring value. Even after years of worn and ejoyment,
diamonds retain their value.
An informed and knowledgeable decision must be made when
selecting a diamond. It is important to know about diamonds
because at first glance two diamonds might appear the same
but in actual fact are very different with widely varying
values. Our experienced staff will take the time to educate
you so that you personally can tell the difference between
diamonds
Education
Our team of experienced staff and jewellers are more than
willing to pass on their knowledge that has been built up
over years of experience in the jewellery industry to our
customers.
As a starting point let us explain to you the different terms
and expressions used by jewellers when talking about diamonds
and rings:
Anniversary / Eternity Ring - Mostly worn on the same finger
as the engagement ring and wedding band. It is often bought
to celebrate the first wedding anniversary or the birth of
the couple's first child. Traditionally a half or full hoop
of diamonds but in todays day its usually designed according
to individual design.
Argyle Diamond - Diamonds which are sourced from theArgyle
Mine in the Kimberley region of Western Australia, the world's
most productive mine.
Baguette - This refers to a rectangular shaped diamond which
is often used to enhance the setting of the larger centre
stone.
Bezel - A facet on the crown (face) or upper part of the
diamond above the girdle.
Diamonds 4 C's
The quality and value of a diamond is judged on four fundamental
criteria known as the four C's. The Carat-weight, Colour,
Clarity and Cut. By understanding these qualities you can
determine which traits are most important to you, and find
a balance between them that best suits your needs.
Cut
Cut refers to the shape, which is determined by an individuals
taste. There are many different shapes available so take time
to look around and see what shape is your preference. The
Round Brilliant is the most traditional shape, however the
Square Princess, Square emerald or Asscher cut, as well as
other fancy cut diamonds have become very popular. More importantly
cut refers to the proportions, symmetry, and finish or make
of the diamond. The cut of a Diamond is the only property,
which is totally dependent on man. Each stone loses, on average,
more than half its original weight during cutting and polishing.
Proportions and angles influence the internal reflection of
light as well as the dispersion of light leaving the diamond.
This determines the brilliance and fire (brightness and sparkle)
of the diamond, and ultimately its beauty. How well cut a
diamond is will reflect in the price. Diamond
Characteristics Chart
Carat - Weight
The weight of a diamond is expressed in carats. The word carat
comes from the carob tree whose seed was used as the standard
of weighing precious stones. 1 carat equals 0.2 grams. A carat
is further subdivided into 100 points. 0.50 ct = 1/2 carat
= 50 points. Weight is the most obvious factor in determining
the value of a diamond. But two diamonds of equal weight may
have very unequal values, depending on their quality. Furthermore
weight only indicates size. Depending on proportions two diamonds
weighing the same may appear very different in size. Internationally,
the weight of a diamond is mentioned to two decimal places.
Diamond
Characteristics Chart
Colour
Most gem quality diamonds fall within the Cape series, a range
of colour from colourless to yellow. D or colourless diamonds
are rare. The colour of a diamond is determined on the basis
of a visual assessment by comparing it to a set of master
diamonds under laboratory conditions. The differences between
colours are very subtle and graded according to the International
Colour Grading Scale. Diamond
Characteristics Chart
Diamonds exist in many colours, such as blue, pink, purple,
yellow or red. With the exception of these natural fancy colours,
the colourless grade "D" is the most valuable. Colours D to
J are best for setting in white gold or platinum. Yellow gold
settings are better for lower colours. Diamonds with a slight
brown or grey body colour will be given an Equivalent Colour
Grading (ECG).
Clarity
Most diamonds have inclusions or imperfections. The number,
size, position, contrast and visibility of these inclusions
determine the clarity grading. Clarity is graded under overhead
lighting with 10-x magnification. Grades correspond to the
International Clarity Grading Scale. Inclusions falling into
grades of SI and better are generally not eye visible. Depending
on your preference you may choose a diamond of lower clarity
and better colour or larger size, or vice versa. Diamond
Characteristics Chart
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