Ocean Dream Diamond
Encyclopedia
The Ocean Dream is a diamond
measuring 5.51 carats (1.102 g), rated in color
as Fancy Deep Blue-Green by the Gemological Institute of America
. The Ocean Dream is the only natural diamond known to the GIA to possess a blue-green hue, making it one of the rarest diamonds in the world. (A blue-green colour is commonly seen in artificially enhanced diamonds
, whose colour is imparted by various irradiation
methods.) After careful study, the GIA concluded that its distinct hue is a result of millions of years of exposure to natural radiation. The Ocean Dream originated in Central Africa, and is currently owned by the Cora Diamond Corporation.
The Ocean Dream was displayed as part of the Smithsonian's "The Splendor of Diamonds" exhibit, alongside the De Beers Millennium Star
, The Heart of Eternity
and the Moussaieff Red
.
Diamond
In mineralogy, diamond is an allotrope of carbon, where the carbon atoms are arranged in a variation of the face-centered cubic crystal structure called a diamond lattice. Diamond is less stable than graphite, but the conversion rate from diamond to graphite is negligible at ambient conditions...
measuring 5.51 carats (1.102 g), rated in color
Diamond color
A chemically pure and structurally perfect diamond is perfectly transparent with no hue, or color. However, in reality almost no gem-sized natural diamonds are absolutely perfect. The color of a diamond may be affected by chemical impurities and/or structural defects in the crystal lattice...
as Fancy Deep Blue-Green by the Gemological Institute of America
Gemological Institute of America
The Gemological Institute of America, or GIA, is a nonprofit institute dedicated to research and education in the field of gemology and the jewelry arts. Founded in 1931, GIA's mission is to protect all buyers and sellers of gemstones by setting and maintaining the standards used to evaluate...
. The Ocean Dream is the only natural diamond known to the GIA to possess a blue-green hue, making it one of the rarest diamonds in the world. (A blue-green colour is commonly seen in artificially enhanced diamonds
Diamond enhancement
Diamond enhancements are specific treatments, performed on natural diamonds , which are designed to improve the gemological characteristics — and therefore the value — of the stone in one or more ways...
, whose colour is imparted by various irradiation
Irradiation
Irradiation is the process by which an object is exposed to radiation. The exposure can originate from various sources, including natural sources. Most frequently the term refers to ionizing radiation, and to a level of radiation that will serve a specific purpose, rather than radiation exposure to...
methods.) After careful study, the GIA concluded that its distinct hue is a result of millions of years of exposure to natural radiation. The Ocean Dream originated in Central Africa, and is currently owned by the Cora Diamond Corporation.
The Ocean Dream was displayed as part of the Smithsonian's "The Splendor of Diamonds" exhibit, alongside the De Beers Millennium Star
Millennium Star
The Millennium Star is a famous diamond owned by De Beers. At 203.04 carats , the world's second largest known top-color , internally and externally flawless, pear-shaped diamond....
, The Heart of Eternity
Heart of Eternity Diamond
The Heart of Eternity is a diamond measuring 27.64 carats , rated in color as "Fancy Vivid Blue" by the Gemological Institute of America. The Heart of Eternity was cut by the Steinmetz Group, who owned the diamond before selling it to the De Beers Group.The Heart of Eternity is a member of an...
and the Moussaieff Red
Moussaieff Red Diamond
The Moussaieff Red Diamond is a diamond measuring 5.11 carats with a triangular brilliant cut , rated in color as Fancy Red by the Gemological Institute of America...
.