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.
Azurite is a rare variety of gemstone quality copper ore. Azurite is one of two basic copper carbonate minerals (malachite is the other). Azurite is rarer than malachite and is considered to be more valuable. Azurite gets its name from the Persian word 'lazhward', which refers to its distinctive, vivid blue color.zurite is one of two basic copper carbonate minerals (malachite is the other). Azurite is rarer than malachite and is considered to be more valuable. Azurite gets its name from the Persian word 'lazhward', which refers to its distinctive, vivid blue color.