[Rockhounds] The Olympic curling stones crafted in Scotland

[Kreigh Tomaszewski]

*Curling is back in the spotlight at the 2022 Beijing Winter Olympics - and
all the stones used by the competitors originate from an uninhabited
Scottish island.*

They are hand-crafted at Kays Curling's workshop in Mauchline, Ayrshire,
using granite from the island of Ailsa Craig.

The company's stones are the only ones used in competition by the World
Curling Federation.

Kays Curling was founded in 1851, and has been providing curling stones for
the Winter Olympics since the Chamonix Games in 1924.
"The history books tell us that curling stones have been made from Ailsa
Craig material for probably at least 200 years now. "There are two sources
on the island and in the good old days you could have a pair made from
either." Today, those two types of granite are combined to make one stone.
Common Green granite is used for the main body, before Blue Hone granite is
added.              https://www.bbc.com/news/uk-scotland-60259628