If you like plaster, but would like something a little harder, then this is probably the material for you. A bright white, medium hard gypsum cement, White Hydrocal can be used for all of those casting situations where plaster might be used, and it also has plasticity like plaster but will give you more "green" strength so that those fine details won't have a tendency to break off when demolding your castings. This product may also be used for hollow casting of large objects to save weight and is somewhat carvable.
*the picture shows a 3 lb. bag, but this SKU is for 10 lbs.