Search Blue Diamonds
Looking To Buy Fancy Blue Coloured Diamond?
Search through our inventory below or book a visit to our London Showroom.
NATURAL FANCY BLUE COLOURED DIAMONDS
Coloured diamonds – also called “fancy diamonds” – are a captivating category of natural diamonds known for their vibrant hues and exceptional rarity. Fancy blue diamonds, in particular, are among the rarest and most prized gemstones in the world.
Roughly one in every 10,000 natural diamonds displays a fancy colour, making them extraordinarily scarce compared to traditional white diamonds. Within this elite group, natural blue diamonds rank as some of the most exceptional, due to the very specific conditions required for their formation.
Fancy coloured diamonds lie outside the GIA’s traditional D-to-Z scale, with their value increasing as the richness and saturation of their colour intensifies. Blue diamonds are graded on hue, tone, and saturation – the most vivid shades are extremely rare and highly sought after.
There are 12 primary colour categories, over 90 secondary colour modifiers, nine levels of colour intensity, and more than 230 potential combinations. Blue diamonds may also show secondary tones such as grey or green, but the purest blue stones with deep saturation and minimal dilution remain the most valuable.
What sets blue diamonds apart is the presence of boron during their formation, which results in their unique and mesmerising blue colour. Among the most famous examples is the legendary Hope Diamond – a deep blue, 45.52-carat stone steeped in history and mystery.
BLUE DIAMONDS
Natural fancy blue diamonds are highly coveted for their serene, elegant colouring and remarkable rarity. Their blue hue is caused by trace amounts of boron in the diamond’s crystal structure, which absorbs yellow light and gives the stone its distinctive blue tone.
These diamonds range from soft sky-blue shades to intense, deep oceanic hues. Most blue diamonds display a slightly steely or grey undertone, but those with pure, vivid blue colour and minimal inclusions are exceptionally rare and command premium value.
Their breathtaking appearance and prestigious status make them a popular choice for investment pieces, royal collections, and unique fine jewellery. Whether set in a statement pendant or an engagement ring, blue diamonds convey elegance, individuality, and timeless appeal.
GRADING OF NATURAL FANCY COLOURED DIAMONDS
Grading fancy coloured diamonds is a specialist process that accounts for the diamond’s hue, tone, and saturation – factors that define its overall colour and impact. The Gemological Institute of America (GIA) is the global authority on diamond grading and uses a detailed system that considers both primary and secondary hues.
Unlike white diamonds, which are graded for the absence of colour, fancy diamonds are valued for the intensity and purity of their colour. For blue diamonds, the GIA’s scale ranges from Faint and Very Light to Fancy Intense and Fancy Vivid – with the latter being the most prized.
At Rêve Diamonds, we offer only 100% natural fancy blue diamonds, each independently certified by the GIA to confirm authenticity, natural origin, and untreated status.
WHY CHOOSE RÊVE DIAMONDS
At Rêve Diamonds, we take pride in offering an exceptional selection of natural fancy coloured diamonds – including a curated range of rare blue diamonds. By sourcing, cutting, and polishing our stones in-house, we remove unnecessary markups and deliver outstanding value to our clients.
Whether you’re seeking a one-of-a-kind engagement ring or a bespoke piece of blue diamond jewellery, our expert team is here to help. Book an appointment online or visit our London showroom to view our exclusive certified collection.
SPEAK TO AN EXPERT
If you’re in search of a natural fancy blue coloured diamond, our jewellery specialists are here to help. Contact us with your questions or book an appointment at our London showroom. You can also reach us via the Live Chat or WhatsApp for friendly, expert advice.
Frequently Asked Questions About Fancy Blue Coloured Diamonds
What is a fancy blue diamond?
A fancy blue diamond is a natural diamond that owes its blue colour to the presence of boron within its atomic structure. The amount of boron affects the intensity of the blue, with deeper shades being more valuable.
Are blue diamonds natural?
Yes, natural blue diamonds are extremely rare and formed deep within the Earth. Some diamonds on the market are treated to achieve a blue colour, but at Rêve Diamonds, we only sell GIA-certified natural blue diamonds with verified colour origin.
What makes blue diamonds different from other fancy coloured diamonds?
While many fancy coloured diamonds gain their colour from structural defects or trace elements, blue diamonds are specifically coloured by boron. This gives them a distinctive tone, unique among coloured diamonds.
Are fancy blue diamonds valuable?
Yes, especially when the stone exhibits vivid colour, good clarity, and high carat weight. Natural blue diamonds are among the rarest gemstones and often fetch premium prices at auction and among collectors.
Are blue diamonds a good choice for engagement rings?
Absolutely. Blue diamonds are elegant, sophisticated, and highly individual. They pair beautifully with white diamonds or coloured gemstones and look stunning in white gold or platinum settings.
How can I tell if a blue diamond is natural or treated?
Always ask for certification from a trusted authority like the GIA. This will confirm whether the diamond is natural in both origin and colour. Treated blue diamonds exist, but they differ in value and authenticity.
Are blue diamonds a good investment?
Yes, natural fancy blue diamonds are increasingly considered strong investment assets. Their rarity, timeless appeal, and global recognition make them a smart choice for collectors and investors alike.
How should I care for a blue diamond?
Like all diamonds, blue diamonds are extremely durable. Clean them gently with a soft brush and mild soap. Avoid harsh chemicals, and have your jewellery checked annually to ensure the setting remains secure.
Explore Our Collections
Blue Coloured Diamonds
Blue coloured diamonds are treasured for their rarity, purity of colour, and certified natural origin. At Rêve Diamonds, all of our blue diamonds are untreated and come with full GIA certification, confirming their authenticity and natural colour formation.
Our blue diamond education section is designed to help you understand the unique qualities of these extraordinary stones, so you can choose the perfect gem for your individual taste and bespoke design.
Use our advanced diamond search tool to filter our selection by shape, carat, clarity, and intensity. Whether you are seeking a subtle icy tone or a rich, vivid blue, our range includes only high-quality stones suitable for exceptional fine jewellery.
