Any sedimentary rock that forms, as sediments settle out of a solution, is called a chemical sedimentary rock. Sediments can settle out of a solution either by the liquid in the solution evaporating, or by too much of the sediment dissolving in the solution (called supersaturation).
A lozenge (â), often referred to as a diamond, is a form of rhombus. The definition of lozenge is not strictly fixed, and it is sometimes used simply as a synonym (from the French losange) for rhombus. Most often, though, lozenge refers to a thin rhombusâa rhombus with acute angles of less than 45Â°.
Also called a Teardrop cut, the pear shaped diamond style is best described as a hybrid of a Round and Marquise cut, where one end is rounded and the other tapers to a point. Traditionally, a pear shaped diamond has 58 facets, so the cut displays almost as much sparkle as a Round cut.