Nutmeg is the actual seed of the tree, roughly egg-shaped and about 20 mm to 30 mm (1 inch) long and 15 mm to 18 mm (1/2 inch) wide, and weighing between 5 g and 10 g (1/2 ounce and ounce) dried, while mace is the dried lacy reddish covering or arillus of the seed.
