Celtic and Scottish Design Wall Plaques Celtic design wall plaques by Andrew McGavin Designs, each cast plaque features authentic Celtic designs which are taken from stones carved during Scotland’s Dark Ages. Each wall plaque is hand made, ready to hang and unique, all the plaques come with individual descriptive notes about the original stone. The colours of these plaques are totally individual due to the hand casting process used, and give a very realistic natural stone effect and make a lovely decoration for any wall