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The 4Cs are used throughout the world to classify the rarity of diamonds. Diamonds with the combination of the highest 4Cs ratings are more rare, and consequently more expensive. Light is the element that ignites a diamond's brilliance and fire. Its interplay with each of the 4Cs will help explain why one diamond can appear more beautiful than another. The good news is that you don't need to buy the rarest diamond to find one whose beauty speaks to you. Cut is the only one of the 4Cs of diamonds that is influenced by the human hand. The rest (color, clarity and carat) are created naturally as diamonds form in the earth.

At Sona Jewellers we ensure that the most ideal cut diamonds are used, so that the facets when arranged in precise proportions maximize brilliance and sparkle. The authenticity of each diamond is based on the GIA(Gemological Institute of America) standard, the highest measure for diamond grading in the world.

CUT

The cut of a diamond represents the proportions and finish. A diamond cut with the correct proportions and angles, also called "Well Cut", will refract the prism of light more efficiently, resulting in vibrant sparkle and brilliance. Less optimal cuts of diamonds result in less fire and sparkle. In a deep cut diamond, some light escapes through the side of the diamond. In a Shallow Cut diamond, light escapes through the bottom of the diamond.

All Diamonds are carefully cut to reveal optimal brilliance and fire; therefore, you are always assured the ultimate in beauty. Cut also refers to the shape and style of a polished gem. Below are the most popular shapes of diamonds:
 
COLOR

The term color of a diamond actually refers to the absence of color or refers to the degree to which a diamond is colorless. When a diamond is colorless, it acts like a prism, letting light pass through it effortlessly. When light is broken down, it is transformed into a rainbow of color. Typically, the closer a diamond is to colorless, the more valuable it becomes.

Diamond Color Guide:

D-F = Colorless

G-J = Nearly Colorless

K-M = Faintly Colored
 
CLARITY

Because diamonds are created by nature with millions of years of intense heat and pressure, imperfections or "inclusions" are often formed in the process. A diamond that has no inclusions may be graded as FL or "Flawless" as it is of the highest clarity and quality. The chart below illustrates the various clarity grades available. IF-FL: Internally Flawless containing no visible inclusions.

Diamond Clarity Guide:

IF-FL: Internally Flawless or Flawless containing no visible inclusions.

VVS1-VVS2: Very, very slightly included. Even under 10x magnification, very few inclusions can be seen.

VS1-VS2: Very slightly included. Unable to see inclusions with the naked eye.

SI1-SI2: Slightly included, with visible inclusions under 10x magnification.

I1-I2-I3: Included. Inclusions can be seen with the naked eye.
 
CARAT

The carat of a diamond is not a measurement of size; it is a unit of mass. Five carats is equivalent to one gram. A 1.00 carat diamond, therefore, is a diamond that weighs 0.20 grams. Since larger diamonds are more rare and occur less frequently in nature, those of a heavier carat are more valuable.