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GIA 4Cs Diamond Blog

GIA 4Cs Diamond Blog

The Culllinan II, a 317.4-carat rectangular cushion cut, is set into the Imperial State Crown. - Courtesy Time & LIFE Pictures/Getty Images
Famous Diamonds: Cullinan II

The Cullinan II is a 317.40 carat (ct) cushion cut diamond and the centerpiece of the British Imperial State Crown. Do you know the history behind this beautiful diamond? (more…)

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© 2002 – 2024 Gemological Institute of America Inc. GIA is a nonprofit 501(c)(3) organization.
All rights reserved.

Use of this site signifies your agreement to its terms of use.
© 2002 – 2024 Gemological Institute of America Inc.
GIA is a nonprofit 501(c)(3) organization.
All rights reserved.