Stealing signs is not always against the rules. Major League baseball's prohibition pertains to stealing signs via electronic means only. Attempts by a team to steal signs during the game simply by observing or by other allowable means are permitted, but obviously risky and unpopular.
The metamorphic rock we selected was marble, which is formed from limestone and contains dolomite and calcite as the two main sediments. Great question! Unfortunately, I can't give an easy answer to this one. Before we continue, let's agree on some basics: calcium is an element, calcite and dolomite are minerals, and limestone is a sedimentary rock which can turn into the metamorphic rock called marble if the right conditions occur.
Limestone for the garden should be very finely ground. Limestone is a common sedimentary rock found all over the world. The primary constituent of limestone is calcite, and the primary mineral in calcite is calcium. A closely related rock known as dolostone contains both calcium and magnesium. Crushed limestone is used for various purposes, but in the garden it is primarily a soil amendment applied to correct soil acidity and provide important nutrients.