These modified cuts tend to have a crushed ice or needle like facet pattern, more similar to a radiant cut than a traditional cushion cut. The chart below serves as a general guideline for evaluating the cut of a cushion cut diamond.
Broadly speaking, two types of stem cell can be distinguished: embryonic stem (ES) cells which can only be derived from preâimplantation embryos and have a proven ability to form cells of all tissues of the adult organism (termed âpluripotentâ), and âadultâ stem cells, which are found in a variety of tissues in the fetus and after birth and are, under normal conditions, more specialized (âmultipotentâ) with an important function in tissue replacement and repair.
Pluripotent Stem Cells. Stem cells that can become all the cell types that are found in an organism, but not the embryonic components of the trophoblast and placenta (these are usually called extra-embryonic tissues).ultipotent Stem Cells. Stem cells that can produce cells of multiple differentiated cell types, but all within a particular tissue, organ, or physiological system.