curling stone

It's a round stone used in the sport of curling, which is played on ice. Players slide these stones to hit a target.

It's one of the popular sports in the Winter Olympics. A characteristic of curling is sweeping the ice with brooms to control the speed and direction of the stone.

Curling, which originated in Scotland, is a strategic sport sometimes called "chess on ice." The Korean women's curling team, "Team Kim," gained global attention by winning a silver medal at the 2018 PyeongChang Winter Olympics.

Curling stones are made of a special type of granite, and the most famous ones are made from stone quarried on the Scottish island of Ailsa Craig. A single stone weighs as much as 20kg and requires precise skill to handle.