Alabaster can be a form of gypsum or calcite that is translucent, massive, and may appear to have veining.
First of all, Gypsum is a mineral, and Rock Gypsum is a rock, don't get them confused. Second of all, no they aren't. Rock Gypsum is a sedimentary rock, and an alternate name for it is Alabaster.
Gypsum
A mineral consisting of the hydrous sulphate of lime (calcium). When calcined, it forms plaster of Paris. Selenite is a transparent, crystalline variety; alabaster, a fine, white, massive variety.
Gypsum is a mineral that is used in plaster-of-paris, wallboard, drywall, and alabaster.
Alabaster is a fine-grained, translucent variety of gypsum, a mineral composed of calcium sulfate.
Alabaster is a kind of mineral, and so an alabaster box is made of alabaster. The word "alabaster" can refer to two different minerals. One is gypsum, the same stuff as found inside of drywall sheets, and as anyone who has ever put a hole in their wall knows, gypsum is extremely soft. This means that an alabaster box will probably not be made of gypsum. The other mineral given that name is a kind of marble which is very hard, and so this is the kind of mineral we're talking about when we think of an "alabaster box." Alabaster is usually white, sometimes marked with browns or tans.
Alabaster can be a form of gypsum or calcite that is translucent, massive, and may appear to have veining.
Alabaster
Alabaster refers to varieties of two different minerals: gypsum (a hydrous sulfate of calcium) and calcite (a carbonate of calcium). Gypsum is the alabaster of the present day; calcite is generally the alabaster of the ancients
First of all, Gypsum is a mineral, and Rock Gypsum is a rock, don't get them confused. Second of all, no they aren't. Rock Gypsum is a sedimentary rock, and an alternate name for it is Alabaster.
Gypsum
You might consider Alabaster.
Selenite Gypsum is used along with alabaster to prepare dental stones.
A mineral consisting of the hydrous sulphate of lime (calcium). When calcined, it forms plaster of Paris. Selenite is a transparent, crystalline variety; alabaster, a fine, white, massive variety.
An alabaster box is a box made of alabaster (a mineral). To find out more about alabaster, please see this site: http://en.wikipedia.org/wiki/Alabaster
Gypsum is a mineral that is used in plaster-of-paris, wallboard, drywall, and alabaster.