Feb 26th, 2013
The Steinmetz Sirius (not to be confused with Sirius Star®…the world’s brightest diamond®) is a 103.83 carat D IF cushion shaped diamond mined from the legendary Premier mine in South Africa.
This legendary cushion shaped stone is claimed to be one of the largest D colored, internally flawless diamonds to ever appear at auction and is only the fourth of its kind (over 100 carat) to be sold at auction.
The process of planning, designing and cutting the rough crystal, which took place in Johannesburg and New York, took over eighteen months to complete and was done by the Steinmetz Group. During the summer of 2003 the stone was exhibited at the Smithsonian Institute in Washington DC along with a handful of other rare diamonds as part of the Splendor of Diamonds Exhibit. It was not initially featured in the exhibit, but rather added during its last month as a gesture of thanks the public for making the exhibit so popular.
It ultimately failed to sell at auction and is owned by Steinmetz to this day.