What is spina bifida? Spina bifida is a neural tube defect that develops during the first month of pregnancy when the spinal column does not close completely. What are the effects of spina bifida? The effects of spina bifida are different for every person.
Tsavorite or tsavolite is a variety of the garnet group species grossular, a calcium-aluminium garnet with the formula Ca3Al2Si3O12. Trace amounts of vanadium or chromium provide the green color.
Clarity is the second most important of the 4 c's when considering Tsavorite quality. Clarity simply refers to how inclusion-free a gemstone is. Once again, the most universally accepted and most documented system is the GIA system but there are also numerous other trade based systems in use.