Fancy Dark Brown-Greenish Yellow Diamond, Platinum, Gold Ring. ...

Condition Report*: Diamonds:

Certified Diamonds:
Stone: 1
Lab: GIA
Certification #: 2125438975
Carat: 41.54
Color: Fancy Dark Brown-Greenish Yellow
Clarity: SI1
Shape: Cushion Brilliant

Metals:
Platinum
Gold

Overall Condition: Very Good
Condition Notes: A remarkable and historically significant 41.54-carat diamond, graded Fancy Dark Brown-Greenish Yellow by GIA, represents the second-largest recorded example of a hydrogen-rich "whiskey colored" diamond. Expertly mounted in a platinum ring with four robust 18k yellow gold prongs, the stone is tailored for exceptional fire, optimal brilliance, and dramatic light play. The setting shows light to moderate wear consistent with age, and the diamond itself has minor chips along the upper halves and girdle edge. Noted in the Spring 2010 issue of Gems & Gemology (pp. 64–65), this cushion-cut specimen belongs to the rare Type IaAB group, exhibiting high hydrogen and nitrogen concentrations, and a subdued yellow luminescence under long-wave UV. Its cuboid phantom cloud inclusion, distinctly observable under darkfield illumination, earns it an SI1 clarity grade—a museum-worthy jewel for the connoisseur of natural diamonds and rare phenomena. Diamond measures 24.43 x 21.40 x 11.95 mm.