(ËlÉk tÉrn) n. 1. a reading desk in a church from which the Bible lessons are read during the service. 2. a stand with a slanted top, used to hold a book, speech, etc., at the proper height for a standing reader or speaker.
How a Diamond is Formed. In order for diamond to form there must be an available source of carbon and relatively narrow ranges of temperates and pressures must align. This happens around 100 miles below the crust. Once crystalized the diamonds must be rapidly transported to the surface without undergoing substantial change.
The shape refers to the appearance of the stone, and the cut to the diamond's ability to reflect light. Most diamond shapes are round, square (cushion), rectangular (princess, Asscher, emerald, radiant), heart-shaped, pear-shaped, oval, or marquise (like a pear but pointed on both ends). The easiest way to distinguish the two is with pictures. The picture below shows the ten most common diamond shapes.