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°.
Featuring an elongated, curved shape and pointed ends, the Marquise cut diamond can often look larger than other shapes of the same carat weight. If you are looking for a diamond cut to stand out, consider the Marquise cut.A fancy shape by most standards, the Marquise cut diamond can be characterised as a boat-shaped brilliant stone. Its unique shape usually demands it is the centre of attention and looks exquisite in a solitaire setting.sually cut to a 2.00 ratio (twice as long as wide), or approximate range of 1.75 to 2.25, this ratio gives distinct length and elegance, whilst providing a good balance of width that is pleasing to the eye. A Marquise ratio of less than 1.50 may appear short and wide, difficult to tell apart from an oval.