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.
Prices for faceted tsavorite start around $100/carat. The most costly variety of garnet is the Russian demantoid garnet. Prices for unset demantoid garnets are usually well over $100/carat and can be as much as $400-$500/carat or more. Rough (uncut) garnets cost considerably less than their professionally cut counterparts.