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.
Moldavite (Czech: Vltavin) vltavÃ­n is an-olive green or dull greenish vitreous substance possibly formed by a meteorite, impact which would make it one kind of. tektiteoldavite is also found to be compatible with borosilicate glass and can be fused to it with ease. The museum grade has a distinct fern-like pattern and is much more translucent than the regular grade. There is usually a fairly big difference in the price between the two.