Portuguese 
English 
Spanish 
2 min of reading 
0 comments 
Understand How a Small Uninhabited Island Became Vital for Curling, Revealing the Role of Special Microgranite, the Technical Standards of Official Stones, High Costs and Strict Environmental Rules
Have you ever imagined that one of the most strategic sports in the Winter Olympics directly depends on a small Scottish island? Ailsa Craig, isolated and uninhabited, is responsible for providing the granite considered ideal for the manufacture of curling stones, the central element of the sport.
Precision That Begins in the Rock
Often referred to as “chess on ice,” curling is a game of calculation, control, and sensitivity. Each throw requires millimeter accuracy, making the choice of material a decisive factor. It’s not just about tradition; it’s about technical performance.
Ailsa Craig, located in Scotland, stands out precisely for its unique geological characteristics. The island is a solitary granite massif that resembles a “sugar loaf” emerging from the sea.
-
Country ‘tears’ the sea with 340-meter underwater tunnels beneath the Atlantic to capture saltwater and erect a megaproject capable of producing up to 100 million liters of potable water per day in West Africa
-
End of water scarcity: colossal 4.2 km pipeline in the Mediterranean supplies mega plant capable of producing 200 million liters per day with reverse osmosis, 25 million liter reservoir, and structure to serve 600,000 people in Tunisia
-
The end of the Portuguese language: award-winning writer proposes changing the name of the language and reignites debate on colonial heritage, African culture, and Brazilian identity after highlighting influences from more than 6 African, Indigenous, and Arab languages in the formation of modern Portuguese.
-
Bicycles become a ‘craze’ in SP, synonymous with agility in traffic, but the government wants to limit electric ones to 20 km/h, reduce speed to 6 km/h near pedestrians, and even prohibit circulation on fast lanes after an increase of 212 thousand units in the Brazilian market.
Despite having no permanent residents, it plays a fundamental role in competitions around the world.
The Secret Behind the Stones
The manufacture of the stones involves two specific varieties of volcanic rock. The “common green” granite forms the body of the piece, while the “blue hone” makes up the contact surface that slides on the ice. This combination ensures resistance and predictability in movement.
The microgranite extracted from the island is described as the only one capable of providing stable and controlled sliding.
For this reason, Kays Scotland exclusively uses these rocks to meet the standard required in international competitions.
Technology and Standardization
An official stone follows strict norms. According to the rules, its weight varies between 17.24 kg and 19.96 kg. This uniformity ensures equal competition conditions on any rink.
Currently, the industry produces about 2,000 units per year. Each piece undergoes careful polishing to control friction on the ice.
Thus, strategies like blocking the opponent work as planned.
High Cost and Preservation
The investment also draws attention. A single unit can cost around 840 euros. Since a match uses 16 stones, the value of the basic set quickly reaches significant figures.
Extraction at Ailsa Craig occurs under strict environmental regulations. The island is home to important seabird colonies.
Hence, activities follow specific exploitation windows, balancing industrial demand and ecological protection.
With information from NSC Total.
-
3 people reacted to this.