Lithium is a medication that works in the brain to treat bipolar disorder. It is approved for the treatment of bipolar disorder and acute mania. Bipolar disorder involves episodes of depression and/or mania.ithium is a medication that works in the brain to treat bipolar disorder. It is approved for the treatment of bipolar disorder and acute mania. Bipolar disorder involves episodes of depression and/or mania.
Examples of gemstones that are found within igneous rocks as a secondary deposit include amethyst, larimar, and fire opal. Metamorphic Rocks Metamorphic rocks form when existing rocks are subjected to intense pressure and/or temperature increases that lead to the alteration of the rocks mineralogical composition, texture, and structure.
1 Rose Quartz is also wide spread but large quantities come from brazil as do the only large find of Rose Quartz prisms. 2  Natural citrine is found with many amethyst deposits but in very rare quantities. 3  Fine examples of Rock crystal come from Brazil (again), Arkansas, many localities in Africa, etc. Prasiolite is a leek-green gemstone variety that is rare in nature but is created by heating Amethyst from certain locations. 2  Rock crystal is the clear variety that is also used as a gemstone. 3  Rose quartz is a pink to reddish pink variety. 4  Smoky quartz is the brown to gray variety.