A game promotion from entertainment company Dave & Buster’s featuring five 3-carat “diamond” engagement rings worth $15,000 each has raised questions about the requirements for lab-grown disclosure.

In a recent press release, the company advertised a special Valentine’s Day promotion at select stores, in which it would place the rings inside its Human Crane game to create a “one-of-a-kind engagement moment.” The Human Crane involves strapping customers into a harness and lowering them into a pool of prizes, similar to a claw arcade game. Rides start at $20 per person.

Dave & Buster’s $15K ‘Diamond’ Ring Offer Raises Lab-Grown Disclosure Questions