Black, Mahogany, Midnight Lace, and Silver Sheen Obsidians

Black, Mahogany, Midnight Lace,and Silver Sheen Obsidians:
1", 1.5", or 2" wide, up to 6" long... .25 sq. inch
1.5" or 2" wide, 6+" to 10" long... .30 sq. inch
3/8" thick x 2.5", 3", or 4" x up to 10"... .35 sq. inch
1"+ thick, 4-6" wide, 11-15" long... .40 sq. inch
1"+ thick, 4-6" wide, 16-24" long... .45 sq. inch