Whilst diamonds sparkle and are dazzling gems, they also display various shapes. Therefore, not all diamond shapes look the same, given their settings. That is why you need to have a bit of knowledge about diamond shapes and cuts before you choose a gem for a piece of engagement jewellery.

A Diamond’s Shape Is Not the Same as the Gem’s Cut

To clear up any misconceptions, first you need to understand that shapes and cuts are not one and the same. Even if diamond professionals use the terms interchangeably, a diamond’s cut is not the same as its shape. Therefore, you need to arm yourself with the proper information so you can make a more informed buying decision.

To make the distinction, a diamond’s cut refers to how the gem’s proportions and facets are formed to reflect illumination, or create fire and brilliance. The shape, on the other hand, is merely the diamond’s silhouette. The most popular diamond shapes include the following:

  • Oval
  • Round
  • Princess
  • Marquise
  • Heart
  • Emerald
  • Pear
  • Asscher
  • Cushion
  • Trillion
  • Baguette
  • Radiant

Diamond Anatomy

Therefore, the cut of a diamond can have a great deal of impact on the gem’s presentation and its return of light, both of which reveal the brilliance and fire that makes a diamond truly sparkle and shine. Therefore, the cut defines the anatomy of the gem. Aspects such as culet size, facets, girdle thickness, crown height, pavilion depth, table size, crown and pavilion angles, and girdle diameter all factor into the equation.

Grading and Certification

According to information garnered from the James Allen Review, a diamond’s cut is dependent on the knowledge and skill of the gemmologist. As a result, there will always be differences in diamond cuts. Grades are designated during diamond certification. When grading is instituted, the reviewer considers the light return, girdle outline, brilliance, and symmetry of the gem.

Diamonds that grade well will reflect and refract light beautifully, which leads to a premium brilliance and fire – bouncing light in such a way so you that cannot help but be dazzled. So, when diamond cuts are considered, light performance is measured by brightness, fire (dispersion), leakage, and contrast.

Proportion factors include the weight, durability, spread (ratio), girdle thickness, tilt, and the gem’s culet size. Finish factors involve symmetry and polish. All of these elements ensure that every feature of a diamond’s cut are reviewed and analysed.

A Diamond’s Fire

The fire of the diamond results from the prismatic effect of the gem. This effect has a rainbow type of impact – bending white light to produce separate hues in the visual spectrum. The individual colours produce the fire inside a gem.

Brilliance

Brilliance is basically a return of light that comes from the entry of light into a diamond and bouncing back. Only a diamond that offers a full return of light is considered a premium cut.

Sparkle

The sparkle or scintillation is denoted by a blinking type of effect when the gem is moved. As the light jumps off the facets and back to the vision, a pattern is triggered – one that creates a diamond’s effervescent gleam and “bling.”

If you are still in a quandary about the terms, ask a diamond dealer to give you more clarification. By having some understanding of the terminology, you can better comprehend the factors that make a diamond a first-rate gem.

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