Overview
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.
Facts
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-
Mineral:
Diamond
-
Chemistry:
C
-
明升体育app_明升体育-官网:
All colors
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Refractive index:
2.42
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Birefringence:
None
-
Specific gravity:
3.52
- Mohs Hardness: 10
Treatments
There are a number of processes used to alter the color, apparent clarity, or improve the durability of gems.
Learn 明升体育app_明升体育-官网Synthetics
Some gemstones have synthetic counterparts that have essentially the same chemical, physical, and optical properties, but are grown by man in a laboratory.
Learn 明升体育app_明升体育-官网Imitations
Any gem can be imitated—sometimes by manmade materials or by natural materials chosen by man to impersonate a particular gem.
Learn 明升体育app_明升体育-官网
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
Red diamonds are so rare that only a handful are known to exist.
Boron
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.
明升体育app_明升体育-官网
The most valuable hues are pink, blue, and green. Slight color differences can impact value.
Clarity
Even diamonds with a low clarity grade are prized by connoisseurs if their color is attractive.
Cut
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
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
Research
Explore sources, gemological research, and the role of gems in history.
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
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
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
Recommended Reading
Collecting and Classifying Coloured Diamonds: an Illustrated Study of the Aurora Collection
Stephen C. Hofer
The Fancy 明升体育app_明升体育-官网 Diamond Book: Facts & Secrets of Trading in Rarities
Eden Rachminov
Forever Brilliant: the Aurora Collection of 明升体育app_明升体育-官网ed Diamonds
Alan Bronstein and Stephen C. Hofer
