How much do blue diamonds cost?
Although coloured diamonds are actually a combination of pure diamond with an impurity in the form of a chemical, they are still considerably more expensive than colourless diamonds with a high clarity. This is partly due to the fact that coloured diamonds are extremely rare, and partly because demand for these coloured varieties is increasing.
This trend can also be seen with blue diamonds. They are mined in a very limited number of sites and are, therefore, very scarce. This makes them popular with collectors and private buyers. This is especially the case when it comes to blue diamonds with an intense blue colouring. Other hues such as light blue and darker varieties are also popular. However, their value could be affected if the blue is too light or too dark. The colour and colour intensity of coloured diamonds are recorded accurately on diamond certificates from a reliable laboratory such as GIA, IGI or HRD, using a scale ranging from "faint" to "fancy vivid".
Along with the colour and its intensity, clarity is another important element for determining the value and price of blue diamonds. Clear diamonds are the most valuable of all. Ultimately, the number and type of inclusions determines the clarity score for blue diamonds. Beyond this, the carat weight and cut quality and shape also influence their value and price.
The price of blue diamonds, therefore, depends on the value of the diamond, but also on the economic climate and the diamond dealer from where you purchase it. The average price of a 0.5-carat light blue diamond is USD 26,280. However, you pay a lot more for deep blue diamonds, which could reach an average of USD 75,000 for 0.25 carats.