This single lovely collectable coaster featuring a picture of the dog breed as shown is a natural slate coaster made of 500 million year old slate from Blaenau Ffestiniog in North Wales. It is cored then individually split using a hammer and chisel. This item makes a great gift for the dog lover. Is approximately 9cm or 3 and a half inches in diameter and approx 3mm thick. Has a felt backing to protect the table. Comes packaged. Made in the UK.