How to Buy a Diamond


Whether you’re proposing or you just want the luxury, diamonds are a serious investment and you need to know how to buy a diamond so that you don’t waste your money. A diamond costs a significant amount of money so you don’t want to spend it on the wrong type for whatever reason you are buying it for. People also have different tastes so if you’re giving it as a gift, it better be right for the person you are giving it to.

If it’s your first time to invest in a diamond, you need to make sure that you don’t end up making the mistake of a lot of people in the past. Factors such as the diamond cut and carat are just some of the things that you need to consider. Here are some of the common diamond buying mistakes that you can review before heading out to the jewelry store.

We will review the different aspects of how to buy a diamond according to professionals to get you ready for this big investment.

How to Buy a Diamond: The 4 C’s

According to the experts, there are four C’s that you need to keep in mind when buying a diamond. Let us look at those first. It’s cut color, clarity, and carat.

  • Cut

    One of the most important characteristics of how to buy a diamond is the diamond’s cut. It has the greatest influence on a diamond’s sparkle. The better the cut grade that you choose, the more it will sparkle. It has the greatest effect on the diamond’s beauty. Also, the more precise the cut, the more captivating the diamond is to the eyes. If a diamond has a poor cut, it could appear dull. Depending on your budget, of course, you can’t always get the signature cut but choose the best one that will fit your budget.

    The signature cut is the most brilliant and represents top 1% of diamond cut quality. Its highest grade of polish and symmetry allows for the diamond to reflect even more light than the ideal cut. The ideal cut reflects the most light that can enter the diamond. If you can’t afford those types of cut, a good cut should at least reflect as much light as possible. You will know that a diamond has a poor cut if it appears dull or glassy. This is a very important lesson on how to buy a diamond.

  • Color

    The color is the second most important aspect of the 4 C’s of how to buy a diamond. It’s not exactly what different colors the diamond has but its lack of color. The less color a diamond shows, the higher the grade. Colorless diamonds are the rarest. There are other natural colors like blue and red and are known as fancy. But their color grading is different from white colorless diamonds.

    The human eye detects the sparkle of a diamond first and the color second. The color grade of a diamond also determines its price. But at some point, the difference can only be seen under professional magnification. Choose one that is as near as colorless that your budget can afford. The naked eye will not really detect those colors unless they are professionals.

  • Clarity

    Third in the 4 C’s of how to buy a diamond is the clarity which may not be as important as the first two because the imperfections to clarity can be so little and microscopic. It refers to the tiny imperfections called inclusions. A diamond that has very minimal inclusions receives a high clarity grade. This means it has little to no blemishes.

  • Carat

    The last one but not the least in the 4 C’s of how to buy a diamond is the carat. It is the diamond’s physical weight measured in metric carats. This is not the diamond’s size. The size of a diamond impacts how large the carat will weigh. Smaller carat diamonds will appear larger with higher carat grades. The carat weight is the most objective grade in the four C’s of how to buy a diamond. You just need to remember that the price of the diamond increases the larger the carat weight.


Now that you know the most important and often, the price determining factors of how to buy a diamond, let’s look at something that is more based on your preferences. Shapes can be very personal and symbolic as well. There are different shapes of diamonds and they have unique characteristics that determine their quality. Sometimes, this will also depend on who you’re giving it to and for what purpose. Most women, for example, prefer a princess cut diamond as an engagement ring. But of course, it’s a matter of taste and personality.

  • Round

    A round brilliant cut diamond is the most popular. It will typically give you the most flexibility in terms of balancing the cut, color, and clarity grades while still getting the brilliance that you want.

  • Princess

    Princess cut is also very popular. It’s the most popular among the non-round diamonds. It’s beautiful and unique and is a favorite as an engagement ring. A princess cut has pointed corners and is traditionally square in shape. Some of them are more square and others more rectangular in shape. You will encounter this a lot as you learn how to buy a diamond.

  • Emerald

    The emerald cut is very different because of its pavilion. It is cut with rectangular facets to create a unique optical appearance. It has a larger open table which highlights the clarity of the diamond.

  • Asscher

    This beautiful unique shape is almost identical to the emerald cut. But it is square. It has a pavilion that is cut with rectangular facets in the same way that an emerald cut has.

  • Marquise

    This shape can maximize carat weight by giving the diamond a much larger looking appearance. It will look very beautiful with some set of round or pear-shaped side stones. It also makes the finger look long and slender.

There are far much more shapes of diamonds that we will not be able to discuss in detail like the oval, pear, heart, and others. But those are the most popular ones and typical choices for different purposes in how to buy a diamond.

If you’re looking for a diamond knife sharpener, here is the Kyocera electric diamond knife sharpener review.

On the other hand, you may also check out our article about rose gold, to give you further ideas on jewelry color’s selection.