Rolex
Rolex SA () is a Swiss luxury watchmaker. Originally founded as "Wilsdorf and Davis" by Hans Wilsdorf and Alfred Davis in London in 1905, the company registered "Rolex" as the brand name of its watches in 1908. In 1919, the company moved its base of operations to Geneva, Switzerland in order to avoid heavy taxation from a recovering post-war Britain, and "Montres Rolex S.A." was registered as the new company name by Hans Wilsdorf in Geneva in 1920. Since 1960, the company has been owned by the Hans Wilsdorf Foundation, a private family trust.
RockWatch
The RockWatch or Rock Watch was a trademarked brand of wristwatch by Tissot with a case essentially made of stone, initially alpine granite from the Grisons, Ticino, and Valais cantons of Switzerland. It was designed by Robert Mazlo and first introduced to the U.S. market in December 1985 and in Switzerland March 1986.Tissot claims it was the world's first wristwatch with a case made of natural stone. The cavities for the movement and dial face were milled from both sides, making the dial an integral part of the case. The straps were fixed to the back plate on both ends thus preventing mechanical stress to the stone.