The Diamond Promotion Service, a division of JWT, is giving the diamond jewelry trade permission to engrave "I Forever Do" in diamond anniversary jewelry. The phrase can be marketed as a reminder of commitments made and can add a unique touch to help maximize these sales, the Diamond Information Center said in a press release.

Launched in January, the "I Forever Do" anniversary campaign is an attempt to reach the 56 million married couples in the U.S.. The selling occasion, points out DIC, is 365 days a year, with a potential market of 150,000 couples celebrating their anniversaries each day.

Read more about DPS's decision to allow diamond anniversary rings to be engraved with the "I Forever Do" slogan.