These cool-looking shapes are called drink rocks and they keep your drinks cold without diluting them. NEAT.
They are made from soapstone and marble and are designed to be chilled in your freezer before being popped into your evening cocktail.The stones are designed by Runa Klock — a designer based in Oslo. She often references the rugged coast of Norway where she was born and incorporates the Scandinavian aesthetic of simplicity and functionality into her work.
The drink rocks come in a set of four, they measure 2 x 2 x 1.8 inches and 5 x 5 x 4.5 cm and come in a beautifully branded box.
Makes a terrific gift for that Whiskey aficionado in your life.