The ring features a colorless radiant-cut diamond — which weighs in at just under 4 carats — situated on a diamond-covered band. The stunning sparkler was designed by Graff Diamonds, though “[Kopelman] picked it out,” a source tells PEOPLE.
Kopelman and Barrymore have been linked romantically since February of last year. The couple got engaged in Sun Valley, Idaho, while vacationing over the holidays.
Source:http://stylenews.peoplestylewatch.com/2012/01/05/drew-barrymore-engagement-ring-picture/