Do all the stones in curling weigh the same?
Emily Sparks
Published Jan 12, 2026
Not all curling stones are made the exact same weight. While the most common weight of a curling stone is 42 pounds, curling stones generally weigh between 38lbs -44lbs. That may sound very heavy, and it is!
Are the stones in curling all the same size?
In the official USA Curling rulebook, each curling stone can be no greater than 44 pounds in weight, and no less than 38 pounds. That weight includes the handle. Each stone can have a circumference no greater than 36 inches, and be much less than 4.5 inches in height. Stones are made of granite.
Are all Olympic curling stones the same weight?
How much does the stone weigh and what is it made of? The official USA Curling rulebook states that each curling stone cannot be greater than 44 pounds (19.96kg) in weight, and no less than 38 pounds (17.24kg). The handle is included as part of the weight.
How much does the curling stone weigh?
The curling stone, or rock, is made of dense polished granite from Ailsa Craig, Scotland, and in the Olympics, each rock weighs 19.1 kg (44 lbs).
How much do curling balls weigh?
The curling stone (also sometimes called a rock in North America) is made of granite and is specified by the World Curling Federation, which requires a weight between 38 and 44 pounds (17.24 and 19.96 kg), a maximum circumference of 36 inches (914.4 mm), and a minimum height of 4.5 inches (114.3 mm).
39 related questions foundAre all curling stones from Ailsa Craig?
For the 2022 Beijing Olympics, all 132 curling stones have been extracted from the quarry on Aisla Craig. The granite available from the isle: Ailsa Craig common green granite, Ailsa Craig blue hone granite, and Ailsa Craig red hone granite, are prized for their tiny molecular structure.
Do curling stones ever break?
Unfortunately, there is a perception that because these are rocks, they simply won't break down. But stones do wear out. Year after year of sliding up and down the ice and banging into each other with great force can take a toll.
What are the different stones in curling?
Curling stones are made from three types of quartz-free granite: Blue Hone, Ailsa Craig Common Green (both found on Ailsa Craig island), and Trefor, which can be found in the Trefor quarry of Wales.
How much is a curling stone worth?
Stone Price
Typically, curling stones are sold in a set of 16: enough for one sheet. For this quantity of stones, the expected sale price is anywhere between $8,000 to $12,000. Average curling stones will be worth $500 to $750 each. Some curling stone manufacturers do not sell their stones with handles.
Do Olympic curlers use their own stones?
To play curling, a set of stones are needed. They are made of a special type of granite and weigh almost 20 kilos each. Each curler has their own brush and a pair of special curling shoes with one sole that grips the ice and one slippery sole – called a Slider – to be able to slide with a stone during delivery.
What is the green light on a curling rock?
If you have watched curling before, you may have seen two green lights illuminate near the edge of the stone as it is released. These lights are connected to a sensor that can tell when a curler releases a stone, and is a part of the electronic hog line device.
What happens if you kick a stone in curling?
What happens if you kick a curling stone? The result of kicking a stone that was just thrown can vary. If the contact occurred before the stone passed the hog line, then that stone is automatically removed from play.
How difficult is curling?
Curling may seem relatively easy compared to other Olympic sports such as, say, ski jumping. But launching a 40-pound rock down a sheet of ice toward a specific target requires a high-degree of balance, precision and athleticism.
Why do they use brooms in curling?
In curling, a 42-pound stone is pushed down a sheet of ice, while two players sweep the surface in front of the stone. The goal is to get the stone closest to the target, called a "house." Sweeping warms up the ice and reduces friction, which makes the rock curl less and therefore move straighter.
What is a hog line in curling?
HOG LINE. Hog lines are the thick lines that stretch across the width of the ice 21 feet (6.4 meters) from the center of each house. Curlers who are throwing the stones must release the rock from their grip before the stone reaches the hog line.
How much do curlers make?
While ZipRecruiter is seeing annual salaries as high as $122,000 and as low as $17,500, the majority of Curling salaries currently range between $29,500 (25th percentile) to $61,000 (75th percentile) with top earners (90th percentile) making $96,500 annually across the United States.
Can you buy a curling stone?
Whether you are looking to purchase used or new rocks, we can help! A complete set of 16 reconditioned (used) rocks with handles generally runs $4000 - $7500, depending on the style, granite quality, and age. By comparison, a complete set of new rocks with handles will range from $8500 - $13000.
How much does a curling stone weigh in the Olympics?
Although players used to be able to choose the size curling stone that they used, they now have it standardized to a weight of 20kg (44.1 pounds) with a width of 278 millimeters (10.9 inches) and a height of 136 millimeters (5.3 inches).
What is peel weight in curling?
Peel Weight - A stone delivered with heavy take-out weight. Port - An opening between two stones that is wide enough for another stone to pass through.
Why are curling stones made of granite?
The body of a curling stone is best made from an extremely tough granite that is able to absorb impacts with minimal damage to its mineral grains. Damaged mineral grains can produce a pit on the striking surface of the stone and change the way that impact energy is absorbed by the stone.
Do curlers have their own stones?
The World Curling Federation uses only rocks from Ailsa Craig, a Scottish Island known for its quarries. Weighing 38 to 44 pounds, they are made of common green granite with an insert of blue hone granite that is better suited for sliding on ice.
Why do Olympic curling stones have lights?
The lights are a tracking system to ensure the athletes release the stone before the first hog line - the red line at both ends where both teams must release the stone before passing it. During Team USA's second game against Italy, Stefania Constantini was penalised with a hogline violation in the sixth end.
What do the sweepers do in curling?
Q: What does sweeping do? A: Sweeping melts a tiny bit of the ice surface, causing the rock to travel farther. And depending on when the sweeping is done, sweeping can help the rock move with less curl or more curl. If the players sweep soon after the throw, the rock will travel in a straighter line.
Why is Ailsa Craig called Paddy's milestone?
It is located about 16 kilometers (10 miles) off the coast of southwestern Scotland, near the mouth of the Firth of Clyde. It is sometimes referred to as “Paddy's Milestone” due to its location halfway between Glasgow and Belfast. The name Ailsa Craig roughly translates as “fairy rock” in Gaelic.
Is Ailsa Craig inhabited?
The island has been uninhabited since automation in 1990. The island currently belongs to David Thomas Kennedy, the 9th Marquess of Ailsa. He owns the entire island, apart from two hectares which were sold to the Northern Lighthouse Board in 1883.