Education Center


What about the Cut of the Diamond?

How is diamonds cut graded?

Loose diamonds are graded according to established industry guidelines. The focus of this measurement is to grade the diamond against the mathematical model to achieve maximum reflected light. Computer aided equipment in most modern grading facilities can measure the amount of white or refracted light shining back through the diamonds top or table.

Why are round brilliant diamonds the only ones referred to as ideal?

The two largest grading institutions in our industry, GIA and AGL, have only given this “ideal cut” status to round cuts at this time.

What’s the difference between Ideal Cut and Karat Signature Ideal Cut in round diamonds?

While many diamonds are spread too shallow or cut too deep to retain weight from the original rough - at a dramatic sacrifice of potential Brilliance, Fire & Scintillation - a Signature Diamond is cut to precise angles and proportions to maximize the radiant light and sparkle that emerges from the top. With a narrower set of acceptable proportions than even GIA Excellent and AGS Ideal cut diamonds, every Signature Diamond consistently delivers a bigger, brighter and whiter appearance. Compare any two Signature Diamonds and you will notice how remarkably similar they are in their proportions, polish and symmetry. Very few brands in the world today can achieve such exacting standards - every diamond, every time.

What is symmetry or polish and how do they affect sparkle?

Symmetry refers to the accuracy of the alignment of the mirrors or facets in a diamond. Polish as its name implies refers to the smoothness of the facets. While both are important in the aesthetics of a diamond, cut is the primary factor affecting its brilliance.

What about color?

Should I be concerned about fluorescence and how does it affect the color of a diamond?

Fluorescence refers to a diamonds reaction or glow when exposed to ultraviolet radiation or a "black light". This phenomenon has little to no impact on everyday life and use but can affect the value between two otherwise identical diamonds. Fluorescence is typically only referred to by trained professionals during the grading process and is not an area of concern for daily use or enjoyment.

What are "fancy color diamonds" and does Karat provide them?

Natural fancy color diamonds are extraordinarily precious and rare. They are created when the diamond is being created deep underground and under tremendous pressures and is exposed to other elements that add their own natural color. As a result, exceptional diamonds may be created in any color imaginable. At Karat, our fancy diamonds are guaranteed naturals and have not been enhanced. Karats diamonds are certified natural and are never dyed or irradiated to create their beautiful color.

How does clarity grade affect a diamond's sparkle and brilliance?

Clarity focuses on the amount of impurities or imperfections within a diamond; the majority of which for jewelry grade diamonds need magnification to be seen. Since the diamonds at Karat are only of the finest grades these small imperfections are negligible to the overall brilliance and beauty of our diamonds. Any diamond with imperfections so large as to effect sparkle and brilliance should never be used in jewelry or given to a loved one as an expression of love.

For a multiple diamond ring, should you keep the same color/cut/clarity grades for all the diamonds?

In everyday conditions and under everyday lighting only a trained expert can judge or notice the difference in diamond coloring within three grades. Therefore you and your jeweler have some flexibility when placing multiple diamonds near each other in your fine jewelry. With clarity, choosing any clarity grade at or above SI1 will appear the same to the unaided eye. Cut however is unique and will visibly effect brilliance and be noticeable to the viewer if it should vary significantly.

What is Diamond Certification?

What are AGSL and the GIA certificates?

The diamond industry has several educational and grading institutions around the world. The two largest and most respected are: The Gemological Institute of America (GIA) and the American Gem Society Laboratories (AGSL). In addition to industry training these organizations offer diamond grading and certification services. These laboratories stake their reputation on the quality and accuracy of the certification they assign. The goal of this independent analysis is to give you the buyer another opinion for consideration when making your investment decision.

Why does Karat not carry diamonds certified by other laboratories, such as IGI or EGL?

When selecting certificate authorities Karat has aligned itself with only the two finest grading services in our industry. These other grading houses have not been selected by Karat as referential resources for our fine diamonds.

Will I receive a GCAL Report?

Yes. Every diamond from our Karat signature collection is accompanied with an additional certificate from the Gem Certification & Assurance Lab (GCAL). This assures you of its quality and accuracy of grading by an independent third party.

Included with this:

  • A photo of your actual diamond
  • Documentations of your diamonds light performance analysis
  • A close-up of the diamonds laser inscription photo
  • A copy of your diamonds proportional diagram
  • Also included at no charge to you is GCALs money back guarantee

Will Karat provide an appraisal for my jewelry purchase?

Absolutely! Any jewelry piece retailing for more than $1000 or custom designed purchase has the option to request that an appraisal accompany that item to its new home.

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