Colored Stones

Fancy Intense Blue Diamond Rings

Bez Ambar · March 4, 2017

Fancy Intense is the third of five color saturation grades for blue diamonds. It sits between Fancy and Fancy Vivid, a position that represents significant visual saturation with prices that, while extraordinary, remain below the top tier.

GIA’s colored diamond grading system uses nine intensity levels: Faint, Very Light, Light, Fancy Light, Fancy, Fancy Intense, Fancy Vivid, Fancy Deep, and Fancy Dark. For blue diamonds specifically, the grades that appear in the fine jewelry and collector market cluster around Fancy through Fancy Vivid, with Fancy Intense representing a meaningful step up from Fancy and a meaningful step below Fancy Vivid.

What Fancy Intense actually looks like, how it performs compared to the grades on either side of it, and what it costs at current market levels is worth understanding before approaching this category.

What Fancy Intense

Looks Like

A Fancy Intense blue diamond has a color saturation that reads as genuinely, clearly blue in all lighting conditions. Where a Fancy blue can appear to gray out slightly in dim light or at certain viewing angles, a Fancy Intense maintains its blue identity across a broader range of conditions.

The characteristic of blue diamonds at all intensity levels is that the blue has a steely, slightly cool quality compared to the more saturated, velvety blue of fine sapphires. A Fancy Intense blue is not a flat grey-blue; it is a distinctly blue stone with a metallic undertone that distinguishes it from other blue gemstones.

The best way to understand the Fancy Intense grade is in person, next to Fancy and Fancy Vivid stones of similar size. The step from Fancy to Fancy Intense is noticeable. The step from Fancy Intense to Fancy Vivid is dramatic, both visually and in terms of price.

Hue Modifiers

and Color Purity

Within the Fancy Intense grade, hue modifiers significantly affect value. A pure blue (graded simply as “blue” on the GIA report) is worth more than a greyish-blue or greenish-blue at the same intensity level.

The modifier appears before the hue name on the GIA report: “Fancy Intense Greyish Blue” is a different stone than “Fancy Intense Blue,” even if the intensity level is the same. The grey modifier reduces the price per carat significantly.

When evaluating a Fancy Intense blue diamond, the GIA report’s color description is the starting point, and viewing the stone in person under multiple light sources is the confirmation. Photography, even high-quality photography, does not reliably represent the actual color of a blue diamond.

Price

at This Level

Natural Fancy Intense blue diamonds are priced by weight, color, clarity, and cut. At 1.00 carat, a Fancy Intense blue with good clarity and no strong modifier can range from $250,000 to $600,000 or more depending on the specific characteristics and market conditions. These are not stable prices; natural fancy color diamonds at higher saturation levels have appreciated substantially over the past two decades.

At 0.50 carats, prices drop into the $80,000 to $200,000 range for comparable quality. Below 0.30 carats, Fancy Intense blues become accessible to a broader range of buyers while still carrying the prestige of a natural high-intensity blue diamond.

Treated blue diamonds at Fancy Intense-level color saturation are available at a fraction of these prices. The aesthetic can be comparable; the market value is not. Documentation is essential for distinguishing them.

Investment

Perspective

Natural blue diamonds at the Fancy Intense level have historically been strong stores of value in the long-term, primarily because the supply of new natural blue diamonds is extremely limited and declining. The Cullinan mine in South Africa, which has produced some of the world’s most significant blue diamonds, continues to operate but yields stones with this color extremely rarely.

Like any illiquid asset, a natural blue diamond requires the right buyer and context to sell. Major auction houses, including Christie’s and Sotheby’s, regularly sell significant blue diamonds and provide the highest visibility for important stones.

What People

Ask Us

What does Fancy Intense blue look like compared to Fancy Vivid? Fancy Vivid blue has deeper saturation and more presence across all lighting conditions. Fancy Intense blue is visually rich and clearly blue, but Fancy Vivid has a quality often described as electric or glowing that intensifies everything around it. The step from Fancy Intense to Fancy Vivid is one of the most dramatic jumps in the colored diamond grading scale, both visually and in terms of price per carat.

How important is the hue modifier in a Fancy Intense blue? Very important. “Fancy Intense Blue” with no modifier is worth significantly more than “Fancy Intense Greyish Blue” at the same weight and clarity. The modifier indicates that the primary hue is not pure blue, which reduces both the visual richness and the market value. When evaluating, read the full color description on the GIA report, not just the intensity grade.

Are Fancy Intense blue diamonds available in smaller sizes? Yes. Stones below 0.50 carats are available at prices that, while still significant, are accessible to buyers who want a natural blue diamond without the investment required for stones above 1.00 carat. Smaller stones can be set as center stones in minimalist designs or as accent stones alongside white diamonds.

Should I buy a natural or treated Fancy Intense blue? Natural, if natural origin matters to you and you have the budget. Treated, if you want the color experience at a price point that is achievable. Never buy a treated stone represented as natural. The documentation distinguishes them clearly, and any reputable seller discloses treatment status.

How do I verify a blue diamond’s color grade? A GIA Diamond Grading Report for colored diamonds specifies the color grade, including the full color description with modifier and intensity, the origin (natural or treated), and any treatments applied. This is the authoritative documentation. Third-party appraisals from a gemologist who has handled the specific stone in person provide additional confirmation.

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