Ultimate guide to
Fancy Blue Diamonds
What are Blue Diamonds?
As blue is one of the rarest occurring colours in nature, it is also one of the most desired natural coloured diamond hues. Blue diamonds are among the least common colours of fancy coloured diamonds, which themselves make for only 0.01% of all extracted diamonds. Blue brilliants are characterized by their high clarity, which, combined with their rarity, puts them in the top most expensive coloured diamonds.
These diamonds, however, are not only rare but also extremely desirable. Blue colour is considered the most beautiful by majority of society. It is not surprising, given that it is known for its calming and nurturing effects. For that reason, it might be the perfect choice, presenting it as an engagement ring to a loved one.
The origin of Blue Diamonds
Colour intensity of Blue diamonds

Blue diamonds prices
• Clarity: VS
• Shape: Cushion
• Cut: Good
• Polish/symmetry: Very good
• Complementary hue: None
• Fluorescence: None

Appreciation of Blue diamonds over the years

Source: The Fancy Colour Research Foundation
As it is shown in the chart above, the popularity of blue diamonds grew significantly in the years 2005-2020. Fancy Vivid Blue diamonds enjoyed the greatest recognition in this period of 382.2%, a bit further, but also highly popular were Fancy Intense Blue diamonds (317.6%), followed by Fancy Blue diamonds of 287.9% recognition. For comparison, the appreciation of yellow diamonds during this period was around 50%. This shows how much interest there is for blue diamonds, and based on the chart above, we can predict a further increase in appreciation, and hence – higher prices.
Complementary hues of Blue diamonds
Famous Natural Blue Diamonds
This diamond weighs 31.06 Ct, while its colour has been graded as Fancy Deep Blue of IF clarity. It comes from the Kollur Mine in India, where it was mined in the 17th century. Then in 2008, it was bought by Laurence Graff who renamed it from Wittelsbach Diamond to Wittelsbach-Graff Diamond. After this transaction, it was repolished, which is now considered by many critics a bad decision due to the loss of its character and history.
