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A Good Understanding of diamonds is helpful before before you start shopping. Learning about diamonds is really learning about the 4 C's of diamonds. (C)ut--(C)larity--(C)olor--(C)arat
These are the criteria jewelers and gemologists use when grading diamonds. Understanding these criteria will help you buy the diamond that is right for you.
Cut Is The Only One Of The 4 C's That Is Not Determined By Mother Nature
When diamonds are first mined, they are not exactly the essance of brilliance and beauty. You could very easily pass by a rough diamond on the ground and mistake it for just an ordinary rock. That is why they are referred to as "Rough Diamonds"The hands of skilled craftsmen are required to "Cut and Polish" a diamond in order for it to exhibit fire and brilliance. How much fire and brilliance a diamond will exhibit depends greatly upon how well or poorly it is cut.
This is where it is important to know that the word cut does not just refer to a diamonds' shape.(Example: Princess Cut, Round Cut, Oval Cut, Cushion Cut, etc..) It also refers to the physical aspects of a diamond such as proportions, polish, symmetry, and angles.
Diamond Cutting requires tremendous skill and training. The "cutter" is the person that will create the tiny surfaces on the diamond known as the "Facets" This process is what creates the "Crown", "Cutlet", "table", "girdle", and "pavilion" of the diamond.
The Facets Of A Diamond Work Like Tiny Mirrors
When light enters a "Well Cut" diamond, the light will reflect from one "mirror-like" facet to another until it is directed up through the top of the diamond. This is what creates the brilliance and fire of a diamond. (Also called sparkle) Maximum sparkle will be created when light does not "leak" out of the diamond.Diamonds that are cut "too shallow" or "too deep" will cause light to leak out in the wrong places, and that will cause the diamond to lose some of it's sparkle. The cut of a diamond can have the biggest impact on the beauty of the diamond and still have a small impact on the price.
It's quite possible to save money by choosing a diamond with lower clarity or color and still have an absolutely gorgeous diamond if it is cut well. That is why mantaining a good balance between all of the 4 C's is so important.
A Well Cut Diamond May Compensate For Lower Color Or Clarity
Cut also refers to a diamonds shape. Diamonds can be cut in many different shapes and they will all handle light differently. The longer shapes tend to have a slight "bow-tie" effect.
This means they have a small zone in the center where light can leak out from underneath the diamond. This is especially true for Heart Shaped diamonds, Pear Shaped diamonds, Oval Shaped diamonds, and Marquise Cut Diamonds.
The Round Brilliant Ideal Cut Diamond will reflect the most light and therefore provide the most sparkle. Most gemologists agree that a well cut diamond will adhere to certain percentages calculated to maximize brilliance.
The calculations will be seen in a diamonds proportions, most importantly how the depth compares to the diameter, and how the diameter of the table compares to the diameter of the diamond.
Because Cut is considered to be so important, several grading methods have been developed to help consumers determine the cut of a diamond. In general these grades are Ideal, Excellent, Very Good, and Fair.
To Create A Well Cut Diamond, A Craftsman May Need To Cut Away More Than 50% Of The Rough Diamond
Diamonds are cut by different diamond cutters from around the world. Some have more experience and patience than others.Rough diamonds are similiar to snowflakes in that no two are the same. Each rough diamond has it's own distinct inclusions.
Because cutting diamonds means losing diamond carat weight in the diamond cutting process, there is always a compromise between beauty and size.
A typical Round Brilliant Cut Diamond has 58 facets. 33 Facets are on the crown of the diamond and 25 are on the pavillion of the diamond.
When Looking To Buy A Well Cut Diamond-The Two Most Important Numbers To Know Are Depth Percentage And Table Percentage
For More Detailed Information On What Are Considered Ideal Cut Diamonds Or Also Referred To As Well Cut Diamonds Please View Our Other Page Titled "Ideal Cut" This page will explain such things as depth percentages, table percentages, crown height, pavillion depth, and polish and symmetryIt is also important to note that cut also refers to diamond shape. To see pictures and descriptions of diamond shapes please view our page called "Shapes"
This page is provided to be a brief summary for explaining the cut of a diamond
Diamond Certification Laboratory of Australia (DCLA) Transparency Grading System
ReplyDeleteAfter analysing thousands of diamonds, DCLA has developed a new Transparency grading system, independent of other quality grades listed on the traditional diamond certificate.
Transparency is the degree to which a material transmits light, directly relevant to the cloudiness or haziness of the material.
Diamonds of any clarity, fluorescence and cut can in fact have Very Good or Excellent Transparency, making them attractive stones. Diamonds of any clarity, fluorescence and cut can also have Good or Medium Transparency - light return can be interrupted by multiple features of a given diamond.
The DCLA Transparency Grading System will now take all of these features into account to provide an even more comprehensive assessment of a diamond.
DCLA Transparency Scale:Excellent - Completely transparent, no light interruption, no haze or cloud
Very Good - Transparent, minimal light interruption, very light haze or cloud, difficult to detect
Good - Transparent, slight visible haze or cloud, detectable
Medium - Semi-Transparent, marked light interruption, moderate haze or cloud, easy to detect
Poor - Semi-Transparent, very little light passes through, heavy haze or cloud
Effective September 15 2008, all DCLA Diamond Certificates will include the diamond transparency.
In addition, the DCLA has also split the traditional Finish grade on our Diamond Certificate into the dual features of Polish and Symmetry. This will provide a fuller, more detailed expression of the overall diamond make to both consumers and the trade.