Color, Purchasing

Buying Blue Diamonds? Read This First.

blue diamondBlue diamonds are amongst the rarest diamond in the world, and their prices definitely match their rarity. The color blue is often associated with royalty and can be a great asset to a piece of jewelry. Some people also tend to buy fancy colored diamonds, of which blue diamonds are part of, as collector items and store them in safes. Whatever the purpose of your journey to buying a blue diamond – there are some things that you should know about blue diamonds before you set out to buy one. The most obvious fact is, of course, that you might find it extremely difficult to buy a blue diamond as they are relatively scarce – if you do manage to find a supplier that can offer you a natural fancy blue diamond, then consider yourself lucky. Apart from its rarity and high price, let’s consider some other aspects that people should also keep in mind when they want to buy a blue diamond.

How Are Blue Diamonds Graded?

The first thing we would like to discuss is the grading process for a blue moon diamond. It is already common knowledge that all diamonds – including blue diamonds – are graded based on an international system, often called the “four C’s”. When an appraiser looks at a diamond, they consider the carat weight of the diamond to be of the upmost importance. The more the diamond weighs, the more it will cost you. Apart from the carat weight, the appraiser also looks at other aspects of the diamond when they try to determine how valuable the diamond that they are inspecting is. The quality of the diamond’s cut plays quite a significant part in both the value of the diamond and the beauty of the diamond. A diamond with an ideal cut will have a much better sparkle and brilliance level than a diamond with a poor cut quality. For this reason, a higher quality cut can cost you more money. The clarity of the diamond is also considered when a diamond is graded. When inclusions in the diamond can be seen with the naked eye, the diamond is not considered as valuable and the price is significantly discounted. A nearly flawless diamond highlights, on the other hand, can cost quite a significant amount of money.

blue diamond colors

In addition to the cut, carat weight and clarity grades of a diamond, the appraiser also needs to look at the color of the diamond. When it comes to colorless diamonds, they look at how colorless the diamond is. The less color the diamond has, the more it will cost the buyer. The strong blue fluorescence diamond g color of a diamond, on the other hand, is graded differently. Instead of determining how colorless the diamond is, the appraiser rather looks at how much color the diamond possess. With a color-enhanced blue diamond, a richer color means a higher price. The intensity level of a blue diamond ranges from faint blue to fancy vivid blue, with colors such as fancy deep blue and fancy blue in-between. In addition to looking at the intensity level, the appraiser also determines whether any secondary colors, such as green and purple, is present in the diamond – this can significantly discount the diamond’s price.


If you are collecting fancy color diamonds, then adding a natural fancy blue diamond to your collection would most definitely be a complement to your existing collection. These diamonds are, however, very rare and you might find it difficult to locate a supplier that has a natural blue diamond that has no secondary colors. If you do intend to buy a blue diamond to add to your collection or use in a piece of jewelry, be sure to take the tips we’ve shared here into account while searching for and buying such a blue diamond jewelry.




Mary Turner


With experience dating back to when brick and mortar was the ONLY source for shopping for diamonds, I have countless men find the perfect diamond for that special occasion. As your Personal Diamond Consultant, I'm here to make sure you end up with the perfect stone.

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