In 1985, Tissot released this beauty; the Alpine Rock watch. It uses a single piece of granite as the case and dial. The back is screwed to the granite case and has lugs attached to accommodate the strap. The movement is an ETA 976.001 quartz, Tissot had stopped producing their own movements some years previously.
There was a couple technical drawbacks; the case was brittle and once cracked or broken that was it. Also, the glass had to be removed so as to access the hands, essential in an overhaul. This quite often resulted in a broken glass.
It was a huge success in the marketplace, was very distinctive and attractive but, for reasons that I don’t know, disappeared from the market quite quickly.
Tissot was established in 1853 and merged with Omega in 1930. The two brands would have undoubtedly shared technology but to my knowledge never shared componentry and definitely maintained their respective individuality to this day.
Tissot has been one of the most innovative of watchmakers. It developed the first dual time watch in 1853, the first antimagnetic movement in 1929. I think that Tissot was the first to use plastic components in the 60’s including case rings (see my Tissot Searock post). In 1971 the company released the first all plastic watch to the horror of the trade who refused to touch them for repair.
This example is 100% original including the strap