Accidental Exposure. Sometimes women take medication before they realize that they are pregnant. When this happens, they may worry about the effects of the medication on their unborn baby. The first thing a woman who is pregnant or who is planning on becoming pregnant should do is talk with her healthcare provider.
Corundum is found as a primary mineral in igneous rocks such as syenite, nepheline syenite, and pegmatite. Some of the world's most important ruby and sapphire deposits are found where the gems have weathered from basalt flows and are now found in the downslope soils and sediments.
The documented primary gem corundum deposits include the alkaline igneous rock of the Garba Tula deposit in Central Kenya (Simonet et al., 2004). Originally believed to be a monzonite, it is now realized that the rock is a syenite.