FERGUS — Ken Dardano never imagined his passion for rock collecting would turn into today’s crystal empire when he launched ...

Related: What's the difference between a rock and a mineral? Rocks located in the Acasta Gneiss Complex in northern Canada have been dated to 4 billion years ago, making them the oldest ...

Lewisian gneiss is metamorphic rock, which means it was formed by being heated up and put under great pressure, deep within Earth’s crust. This process causes minerals to crystallise out, resulting in ...