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Fancy 明升体育app_明升体育-官网 Diamond

Dazzling brilliance. Captivating 明升体育app_明升体育-官网 The planet’s most valued gems are fancy color diamonds.

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Radiant Cut

The radiant cutting style helps intensify a fancy colored diamond’s 明升体育app_明升体育-官网

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Beyond Z

Diamonds with more yellow than 明升体育app_明升体育-官网’s Z grade are considered fancy 明升体育app_明升体育-官网

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明升体育app_明升体育-官网 is Value

Subtle color differences impact the value of a fancy colored diamond.

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Octahedral Form

Beautifully formed octahedrons might become collectors' treasures.

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Crystal Faces

Diamond crystal faces show cutters how to get the best weight retention.

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Uneven 明升体育app_明升体育-官网

The color in rough diamond might not be evenly distributed in the rough.

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About Fancy 明升体育app_明升体育-官网 Diamond

About Fancy 明升体育app_明升体育-官网 Diamond

Gem diamonds in 明升体育app_明升体育-官网’s D-to-Z range usually decrease in value as the color becomes more obvious. Just the opposite happens with fancy color diamonds: Their value generally increases with the strength and purity of the 明升体育app_明升体育-官网 Large, vivid fancy color diamonds are extremely rare and very valuable. However, many fancy diamond colors are muted rather than pure and strong.

Fancy 明升体育app_明升体育-官网 Diamond Description

Fancy 明升体育app_明升体育-官网 Diamond History and Lore

Birthstones & Anniversaries

Diamond is the birthstone for April and the gem of the 10th and 60th anniversaries. Fancy color diamond adds a unique twist to your celebration.

1 in 10,000

Only one in 10,000 diamonds has a fancy 明升体育app_明升体育-官网

$71.2 million

In April 2017, the Pink Star diamond,
59.60 carats, became the most expensive
gem ever auctioned.

Hope Diamond

The 45.52-carat Fancy Deep grayish blue Hope Diamond is the world’s most famous gem.


  • Mineral:   Diamond
  • Chemistry:   C
  • 明升体育app_明升体育-官网: All colors
  • Refractive index: 2.42
  • Birefringence: None
  • Specific gravity:   3.52
  • Mohs Hardness: 10


There are a number of processes used to alter the color, apparent clarity, or improve the durability of gems.

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Some gemstones have synthetic counterparts that have essentially the same chemical, physical, and optical properties, but are grown by man in a laboratory.

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Any gem can be imitated—sometimes by manmade materials or by natural materials chosen by man to impersonate a particular gem.

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gem love

Why We Love This Gemstone

Rarest of the rare

Fancy color diamonds are the rarest of the rare. Each is one of a kind.


Red diamonds are so rare that only a handful are known to exist.


Less than one boron atom per million of carbon atoms can give a diamond a blue 明升体育app_明升体育-官网

明升体育app_明升体育-官网 Factors

Strength and purity of color influence a fancy color diamond’s value.


quality factors

The most valuable hues are pink, blue, and green. Slight color differences can impact value.


quality factors

Even diamonds with a low clarity grade are prized by connoisseurs if their color is attractive.


quality factors

Fancy shapes like radiant cuts are commonly used to maximize the intensity of the 明升体育app_明升体育-官网

Carat Weight

quality factors

In pink, blue, green and orange, even fancy color diamonds below a carat are rare and valuable.

Fancy 明升体育app_明升体育-官网 Diamond 明升体育app_明升体育-官网 Factors: The Comprehensive Guide


Explore sources, gemological research, and the role of gems in history.

A blue diamond with inclusions under the table is held up in tweezers.

Where Do Blue Diamonds Come From?

Blue Diamonds Have a Surprising “Superdeep” Origin and a Link to Ancient Oceans

Evan M. Smith , Aug 1, 2018 Read Article
G&G Winter 2018 Cover

Natural-明升体育app_明升体育-官网 Pink, Purple, Red, and Brown Diamonds: Band of Many 明升体育app_明升体育-官网s

Sally Eaton-Maga?a, Troy Ardon, Karen V. Smit, Christopher M. Breeding, and James E. Shigley , Feb 1, 2019 Read Article
Recently discovered and legendary diamonds in the blue/gray/violet color range

Natural-明升体育app_明升体育-官网 Blue, Gray, and Violet Diamonds: Allure of the Deep

Sally Eaton-Maga?a, Christopher M. Breeding, and James E. Shigley , Aug 6, 2018 Read Article
Fancy Vivid yellow diamond

Very Large Irradiated Yellow Diamond

Wuyi Wang , Jan 30, 2015 Read Article