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.
Online Article Page. Until recently, it wasnât easy being green for any gem except emerald. Things began to change when tsavorite came on the scene in the early 1970s. Thanks to sponsorship by Tiffanyâs, this East African green garnet set a second standard for green gems.