Charcoal Brick Corners by Andi Mini Brick & Stone. 1 25 count bag of charcoal bricks. This product is very versatile. It is made out of a high density casting plaster and is a solid color throughout. It can be easily trimmed to fit with a knife or scissors. Designed for the 1:12 scale miniature setting. Each brick measures 1/2 of an inch long x 5/16 of an inch wide x 1/8 of an inch thick. Each package covers 50 square inches