Shopping for a diamond can be very exciting! Whether it’s a gift for an important event, a complete surprise, or just a simple reminder of love, Roman Malakov is here for you!

One of the most important parts of diamond education are “the 4 Cs of diamonds.” These Cs contribute to the final price and brilliance of a diamond therefore it’s important to understand what they mean.

A diamond guide is a great place to start your diamond education, but you can also talk to expert jewelers to learn about the ever-important 4 Cs of diamonds.


The most important of the four Cs is Cut.

  • This is not to be confused with the shape of the diamond, rather, it’s the way that the diamond is cut by a jeweler which ultimately refers the brilliance of the diamond. The “grades” range from ideal, excellent, very good, good, fair, or poor.

  • Though it doesn’t mean they are any less beautiful nor desirable, some diamonds may be cut too shallow or too deep, leading to a lower grade and less sparkle. In fact, some older antique diamonds are intentionally cut this way to create a different and interesting look that is beautiful in its own way.

The next of the four Cs is Color.

  • While there are colored diamonds, such as yellow, pink, black, and others, the color part of the 4 Cs refer to the colorlessness of a diamond. Grades start with a D, being the most colorless, and go down to Z, for diamonds with a noticeable tint.

  • Diamonds towards the D-end of the scale are extremely rare, their higher price tag is based upon the rarity rather than the beauty. The most important thing to consider in selecting a diamond’s color is based upon your overall preference—how it’ll look in its setting and under different lighting.

    • Fun Fact: Most people cannot tell the difference between diamond colors, even gemologists.

The third of the 4 Cs of diamonds is Clarity.

  • A clarity grade refers to how many inclusions or blemishes it has and essentially focuses on the cleanliness of the diamond. Several different clarity grades can be given to a diamond, from “flawless” to “having very slight inclusions” to “having inclusions.” Inclusions or blemishes affect how the light passes through a diamond, which can directly impact its sparkle and brilliance. While each diamond has a clarity grade already assigned to it, you won’t know exactly how that grade impacts the look of the diamond until you examine it yourself. The main goal when it comes to a diamond’s clarity is to ensure that the stone is “eye clean,” meaning that to the naked eye, it looks shiny, sparkly, and beautiful.

The final C of the four Cs is Carat.

  • While many people mistakenly think this is purely about the size of the diamond, it actually refers to the weight of the diamond. Depending on how the diamond is cut and its shape, two stones of the same carat weight can appear very different in overall size.


While the 4 Cs of diamonds are important to consider, a big part of your diamond education is understanding that all four Cs work together to create vastly different looks. You should explore a variety of options when you’re searching for a diamond and weigh the different combinations of the four Cs against other choices to ensure you make the best decision.

More Diamond Education

When you purchase a diamond or other certified gemstone, you will most likely receive information on the four Cs of your particular gemstone from the Gemological Institute of America (GIA). This is a nonprofit organization that is committed to researching diamonds, providing gemstone and diamond education, and ensuring that standards are maintained and met across all gemstones sold in the US.

Diamond shape is also important to consider when purchasing a diamond. The most common shape is round, but other shapes include princess, cushion, oval, marquise, emerald, radiant, heart, pear, and asscher.

We Hope to Hear From you Soon!

For further assistance on diamond education or to simply shop for the perfect diamond jewelry piece, come in to one of our NYC stores or shop online. You can also make an appointment, for an online or in-store consultation.

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