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Are blue diamonds worth anything?

Are blue diamonds worth anything?

Blue diamonds are some of the rarest and most sought-after diamonds in the world. Their beautiful blue hue sets them apart from colorless diamonds or those with hints of yellow or brown. But besides their stunning appearance, blue diamonds also have significant value. So are blue diamonds worth anything?

The short answer is yes – blue diamonds can be incredibly valuable. Natural blue diamonds are so rare that they can sell for over $1 million per carat for vivid blues. Even lighter blue shades can fetch steep prices at auction. The high value of blue diamonds is driven by their scarcity, color intensity, and demand from collectors and investors.

What Makes Blue Diamonds Rare and Valuable

There are a few key factors that contribute to the value and worth of natural blue diamonds:

Scarcity – Blue diamonds belong to a very small subgroup of colored diamonds. Only about 0.1% of diamonds mined show some blue coloration. And vivid blues of intense shades are exceptionally rate – these make up a tiny fraction of the 0.1%. This extreme scarcity leads to high prices.

Color Intensity – The more vivid and intense the blue color, the rarer and more valuable the diamond. Vivid blues are the most prized. Faint or grayish blues are less rare and sell for lower prices. Color intensity greatly impacts value.

Natural Origins – The blue color must be from natural origins to maximize value. Natural blue diamonds result from trace elements like boron within the stone. Synthetic or treated blues are worth much less.

High Demand – Wealthy investors and collectors covet rare vivid blue diamonds. Demand is constantly high, especially at auction. Limited supply for an in-demand item also raises prices.

Notable Characteristics – Extra factors like a high clarity grade, large carat size, or unusual cut can further raise the value of natural blue diamonds.

Blue Diamond Value By Shade

Not all blues are equal when it comes to diamond value. Here is an overview of price differences based on the intensity of the blue color:

Faint Blues – These washed out or grayish blues are the most common. They sell for $3,000 – $5,000 per carat on average.

Very Light Blues – Displaying more identifiable blue than faint blues, prices range from $5,000 – $8,000 per carat.

Light Blues – Light blues with a noticeable blue tint can cost $8,000 – $12,000 per carat.

Fancy Light Blues – These vibrant light blues fetch $15,000 – $25,000 per carat.

Fancy Blues – With a rich blue color, fancy blues run from $25,000 – $50,000 per carat.

Fancy Vivid Blues – The most desirable intense vivid blues exceed $50,000 per carat, sometimes reaching over $1 million.

Notable Sales of Blue Diamonds

Some record sales of remarkable blue diamonds demonstrate their staggering value and worth:

Diamond Carats Sale Price
De Beers Millennium Jewel 4 10.10 $32 million
Hope Diamond 45.52 $350 million estimated value
Wittelsbach-Graff Diamond 31.06 $24.3 million
Oppenheimer Blue 14.62 $57.5 million
Pink Star Diamond 59.60 $71.2 million

These auction prices demonstrate the incredible value placed on world-class blue diamonds. Single stones can be worth tens of millions. Vivid blues set records in jewelry auctions worldwide.

What Impacts Blue Diamond Prices?

From the diamond’s individual characteristics to outside market factors, there are several key determinants of blue diamond prices:

Color – The intensity of blue is the most important factor. Vivid blues are exponentially more valuable than faint shades.

Carat – Larger blue diamonds are worth more per carat. A 5 carat stone may sell for double a 2.5 carat.

Clarity – Higher clarity grades raise value for blue diamonds, especially internally flawless (IF).

Cut Quality – Premium cuts like cushion or oval brilliants display the blue color best.

Source – Natural blue diamonds from known mines hold more value than uncertified stones.

Demand Levels – Prices rise when demand is high among top collectors and investors.

Economic Trends – Strong economies and discretionary wealth boost luxury prices.

Reputation of Seller – Renowned jewelers or auction houses fetch higher sales prices.

Are Blue Diamonds a Good Investment?

Exceptional blue diamonds have appreciated in value over time, making them a worthwhile investment for buyers seeking an alternative asset. Here are key factors to consider:

Rarity – Supply limitations support steadily rising prices over the long-term.

Increasing Wealth – More high net worth individuals are investing in colored diamonds.

Proven Price Growth – Blue diamonds have shown consistent value growth over decades, especially vivid blues.

High Resale Value – There is always buyer demand for remarkable blue diamonds in any economy.

Portability – Diamonds hold enormous value for their small size, making them easy to store and transport.

However, lower quality blues may not appreciate as reliably. And diamonds carry the usual investment risks like volatile prices, counterfeiting, and low liquidity. Overall, exceptional natural blue diamonds do seem to be a worthwhile addition for serious investors.

Are Synthetic Blues Worth Anything?

Lab-created blue diamonds possess a much lower value than natural blues. Here’s an overview:

Pricing – Synthetic blues sell for only $800 – $1,500 per carat typically.

Mass Production – Lab diamonds can be manufactured in bulk, limiting rarity value.

Quality Grades – Synthetic blues often achieve higher color and clarity grades.

No Resale Value – These lab-made stones do not possess investment value.

Lack of Prestige – Synthetic diamonds have little cachet compared with natural gems.

While synthetic blue diamonds appear visually similar, they lack the value factors of being rare, unique, and naturally created. Buyers should not pay natural diamond prices for lab-grown blues.

How to Verify Natural Blue Diamonds

Since blue diamond value relies heavily on natural origins, it is critical to verify a stone’s authenticity:

Buy from Trusted Sellers – Renowned retailers and auctioneers offer certifications of quality.

Review Diamond Certificates – Lab reports from GIA or AGS should confirm “natural” color.

Check for Quality Marks – Laser inscriptions, clarity enhancements, etc. should be disclosed.

Examine under UV Light – Natural and lab diamonds display different fluorescence under UV.

Advanced Testing – Further analysis can identify lab-grown diamonds definitively.

Taking steps to validate the source ensures that buyers get what they pay for in a high-value blue diamond. An accredited appraiser can also assist in screening for any undisclosed treatments or synthetics.

Best Uses of Blue Diamonds

The most valuable blue diamonds should be preserved and displayed for their financial and cultural importance. Top uses are:

Auction House Offerings – Rare blue diamonds sold by Sotheby’s or Christie’s bring record prices.

Museum Showpieces – The Hope Diamond at the Smithsonian demonstrates the history and significance of notable blues.

Investment Assets – Purchased through dealers, held in collections, or stored in vaults.

Jewelry Masterpieces – Carefully designed fine jewelry that highlights the diamond yet allows removability.

Delicate vivid blues require protection in secure settings. Refraining from everyday wear preserves their integrity. Private collectors and investors have the most access to these scarce gems.


In conclusion, blue diamonds undoubtedly carry tremendous value. Natural vivid blues are some of the most precious gems in the world. Their unparalleled rarity and beauty leads to demand that boosts top-tier blue diamonds into the millions per carat. While faded blues have lower worth, the most intense, naturally occurring blues represent both cherished luxuries and smart alternative investments. Proper verification processes must be followed to ascertain an individual stone’s authenticity and pay an appropriate price. When buyers follow best practices to acquire a quality blue diamond, it can be a worthwhile and meaningful possession.