here's the site:
https://diamondsclassaction.com/and here's some info:
This website provides information about a proposed settlement of class action lawsuits concerning the price of diamonds and diamond jewelry. The proposed settlement is currently pending in the U.S. District Court for the District of New Jersey. The defendants are certain companies within the De Beers Group.
The class actions are brought on behalf of persons and businesses who purchased loose gem diamonds or jewelry or other products containing gem diamonds in the United States.
The Court has conditionally certified two classes, or groups, of diamond buyers: the Direct Purchaser Class and the Indirect Purchaser Class. Members of the Direct Purchaser Class purchased from De Beers or De Beers' Diamond Mining competitors while members of the Indirect Purchaser Class purchased from someone OTHER THAN De Beers or De Beers' Diamond Mining Competitors. The Indirect Purchaser Class is divided into two subclasses: Consumers and Resellers. Select the links below to obtain detailed information about each Class.
Consumers: All persons located in the United States who purchased any diamond or diamond jewelry or other products containing gem diamonds for personal use and not for resale between January 1, 1994 and March 31, 2006. For example, Consumers include people who purchased diamond jewelry to wear or to give as a gift.
Resellers: All persons or entities located in the United States who purchased for resale any gem diamond or diamond jewelry or other product containing gem diamonds between January 1, 1994 and March 31, 2006 from someone other than De Beers or De Beers' Diamond Mining Competitors. Resellers include diamond jewelry manufacturers and retailers, among others.
Direct Purchasers: All persons or entities, except Sightholders, for the period they had Sightholder status, located in the United States who purchased any gem diamond directly from De Beers or De Beers’ Diamond Mining Competitors from September 20, 1997 to March 31, 2006.