Introducing the Stone Cup, a beautifully designed every day cup made from real metamorphic rock. Using the power of Mother Nature herself, the Stone Cup relies on naturally occurring elements to naturally regulate the temperature of any beverage inside. Artisan milled, the Stone Cup can be chilled or heated as well as keep the contents inside at their ideal temperature for longer than an ordinary cup. As with all of nature, the black marble design is totally unique – no two cups are the same. Each cup is 4.25 inches tall and 2.25 inches wide. Tapering towards the base, the Stone Cup is easy to hold and is even dishwasher safe. Designed to last a lifetime, the Stone Cup holds eight ounces of liquid.