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Question:

I Want To Buy A Diamond-What Is The Difference Between "Cut" and "Make"?

The Cut Of a diamond actually refers to 2 things. It means the "Shape" of a diamond, and the "Make" of a diamond. Most People that are buying a diamond, already know what the "Shape" of a diamond means. Some examples Of Popular Diamond Shapes Are The Princess Cut Diamond, The Round Brilliant Cut Diamond, The Emerald Cut Diamond, The Radiant Cut Diamond, The Marquise Cut Diamond, or even The Pear Cut Diamond.

The second thing that results from the cut of a diamond is it's "Make". The "Make" of a diamond simply refers to the quality of the diamonds proportions, symmetry, and polish. These are a result of how well the diamond is cut and faceted.

The 4 C's Are Not Enough To Determine The Proper Cost Or Maximum Beauty Of A Diamond

Even though the Make of a diamond is considered to be quite important, only The American Gemological Society (AGS) assigns a grade for it on their Diamond Grading Certificates. A Grade of 0 (Zero) deductions is the best.

Certainly the 4 C's (color, clarity, carat, cut) are important if you are buying a diamond. They will help determine the rarity of a diamond. (More rare, means more expensive) However the "potential" for beauty in a diamond also contributes to it's cost. This potential is a direct result of it's make.

The Proportions Of A Diamond Are Important

The Proportions of a diamond is a major factor in determining the "Flow Of Light". When the proportions of a diamond are too deep or too shallow, light will "leak" out of the diamond in the wrong places. When The Diamond is cut with "Ideal" proportions, more light will be reflected back up through the top of the diamond. (More light means more beauty!!) The light that is reflected back up through the top of the diamond is what gives the diamond it's "Brilliance", "fire", and "Scintillation". Yes, these are real diamond terms too! The definitions are below.

Brilliance

The Combination Of All White Light Reflections From The Surface And Inside Of The Diamond. It's What Gives A Polished Diamond It's Brightness

Scintillation

Sometimes called "sparkle," scintillation refers to the tiny flashes of light when the diamond, the light source, or the observer moves. It depends on the number, size, and position of the facets. The quality of the polish affects scintillation, too.

Fire (Also Called Dispersion)

Sometimes called "fire," dispersion is the breaking up of white light into spectral hues and the "rainbow" colors you see when light passes through a prism. Diamonds are more dispersive than most other gems.

"Ideal" Cut Diamonds Are Rare In The Market And Tend To Be The Most Expensive

Preferred Proportions For A Round Cut Diamond

"Ideal Cut"

Depth=60.2% to 62.7%

Table=52.5% to 57.5%

Polish=Good to Excellent

Symmetry=Good to Excellent

Girdle=Thin to Medium

Cutlet=None

There is also another train of thought that believes a "Perfect Diamond" should have a 60-60 make. That means that the depth should be as close to 60% as possible, with a few degrees of variance either way. And the table should be as close to 60% as possible with a couple of degress of variance either way being acceptable.

Proportions Of A Premium Cut

While there is nothing as breathtaking as a Text Book Ideal Cut Diamond, you can save some money by purchasing a diamond with a make of slightly less than Ideal Cut. Such as a "Premium" cut diamond.

I would suggest: Depth of 58%-63.5% and Table of 52%-61%. If you stay within these guidelines, your diamond purchase should be a very nice one. You can stray one or two degrees away from these proportions, but the farther away from "Ideal Cut" you go, the more it starts to affect the beauty of the diamond. Also please be aware, that sometimes the beauty of a diamond is in the eye of the be-holder. You are the final judge of what looks good to you!! If you like a diamond that does not conform to these proportions and you can save money, by all means buy it.

As I suggest on all of these pages, Diamonds are like snowflakes: No 2 are exactly alike. Your Diamond choices are endless!!. Keep looking until you find one that is right for you.

Preferred Proportions Of A Princess Cut Diamond

Depth= 64% to 75.9%

Table= 59% to 82%

Polish= Good to Excellent

Symmetry= Good to Excellent

Girdle= Very Thin to Very Thick

Preferred Proportions For Radiant And Emerald Cuts

Depth= 59.9% to 69.9%

Table= 59.9% to 69.9%

Polish= Good to Excellent

Symmetry= Good to Excellent

Girdle= Very Thin to Very Thick

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