Jewelry & Gem Fundamentals
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© by Tiease D. Deutsch 12/15/2011
Tiease D. Deutsch
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Elizabeth Taylor is an iconic actress & beauty that I will never forget, not so much for her multiple marriages, rather for her mesmerizing beauty, purplish eyes, and outstanding talent. For many Fashionistas like myself, Liz will be remembered for her revered jewelry collection (Fit for a queen!). What woman wouldn't love to possess such a magnificent Gem Collection.
Diamond cut does not refer to its shape. you have to cut a diamond to make it a shape, but when gemologists say "cut," they are talking about a diamond's proportions, such as its depth and width and the uniformity of its facets--all characteristics that control brilliance, durability and other features we look for in a diamond.
An exact cut is essential to a diamond's beauty.Without a precise cut a diamond with brilliant color and clarity will not sparkle in the familiar manner which diamonds are credited.
The proportions of width and depth have a large impact on diamond brilliance, the reflection of white light that we see when we look at a diamond. Refer to the graphic on this page as you read the following descriptions.
Light traveling through a shallow cut diamond is lost out of the bottom of the stone and does not back into sight. The lack of light play makes shallow cut diamonds appear lifeless.
Light traveling through a diamond that's cut too deep escapes out the sides, darkening all or portions of the stone.
Light traveling through an ideal cut diamond bounces back out the top of the stone, bringing its brilliance into view.
The graphic illustrates extremes. As with other diamond characteristics, there are cuts which encompass various quality.
The Symmetry of Diamonds
Symmetry refers to the alignment of a diamond's facets, its flat and polished surfaces. The facets should be cut to achieve the best play of light.
You've seen diamonds flash when you move them in the light--that effect is called scintillation, and it occurs when light bounces among the facets. Light doesn't reflect as it should if facets are misaligned, diminishing the fireworks display.
Diamonds graded Fair and Poor for symmetry usually have facets that are misaligned so negatively affects its reflection of light.The surface of any facets is suppose to be smoothly polished so light may pass through it.
Get a load of some of these jewels!
Diamond cut does not refer to its shape. you have to cut a diamond to make it a shape, but when gemologists say "cut," they are talking about a diamond's proportions, such as its depth and width and the uniformity of its facets--all characteristics that control brilliance, durability and other features we look for in a diamond.
An exact cut is essential to a diamond's beauty.Without a precise cut a diamond with brilliant color and clarity will not sparkle in the familiar manner which diamonds are credited.
Diamond Width and Depth
The proportions of width and depth have a large impact on diamond brilliance, the reflection of white light that we see when we look at a diamond. Refer to the graphic on this page as you read the following descriptions.
Light traveling through a shallow cut diamond is lost out of the bottom of the stone and does not back into sight. The lack of light play makes shallow cut diamonds appear lifeless.
Light traveling through a diamond that's cut too deep escapes out the sides, darkening all or portions of the stone.
Light traveling through an ideal cut diamond bounces back out the top of the stone, bringing its brilliance into view.
The graphic illustrates extremes. As with other diamond characteristics, there are cuts which encompass various quality.
The Symmetry of Diamonds
Symmetry refers to the alignment of a diamond's facets, its flat and polished surfaces. The facets should be cut to achieve the best play of light.
You've seen diamonds flash when you move them in the light--that effect is called scintillation, and it occurs when light bounces among the facets. Light doesn't reflect as it should if facets are misaligned, diminishing the fireworks display.
Diamonds graded Fair and Poor for symmetry usually have facets that are misaligned so negatively affects its reflection of light.The surface of any facets is suppose to be smoothly polished so light may pass through it.
Common Problems with Diamond Cuts
- A broken or chipped cu let.
- A culet that's missing or one that's off center.
- Misaligned or extra facets.
- A girdle that is too thick, creating poor proportions, or too thin, making it easier to damage.
- A fringed girdle, with tiny cracks going into the diamond.
- A table that slopes to one side.
- Always buy diamonds from a reputable jeweler and ask questions about diamond characteristics. Inspect as many diamonds as possible so that you can make good comparisons.
- Jewelry Dreams!
Get a load of some of these jewels!
Artist, Writer & Consultant
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