On Tuesday, Tiffany & Co. issued a voluntary recall of its 11-ounce Wheat Leaf crystal glass mugs. The mugs measure about 3-1/2 inches tall and three inches in diameter and have a handle with a wheat leaf pattern etched into the glass. They also bear a blue Tiffany & Co. sticker on the bottom.

The company has received six reports of the mug breaking when hot liquid was poured into it. No injuries have been reported. The items were sold through Tiffany & Co. stores, through the company’s online catalog and through the “Tiffany for Business” sales channel in the U.S. from October to December 2017.

Consumers should immediately stop using the recalled mugs and contact Tiffany & Co. for a full refund plus a $100 gift card. See details here. Tiffany is directly contacting consumers who purchased the recalled mugs.