Mineral?

I’m not a precious gems sort of person and l don’t have any minerals on hand except pink salt in the kitchen or some magnesium crystals in the bathroom.
So it was only when l took Thisislife’s tip yesterday that l noticed my favourite lemonade can matches my table runner.
Like their sparkling water too.
I do like to try coupling colours and on uploading liked the tiny markings on the tin.
It does taste better on a warm and sunny day though...