SIMPLE AMETHYSTS

by barbie40 - uploaded on October 12, 2015, 7:52 am

An amethyst is a mineral that comes from quartz. It is usually transparent. It is a type of rock. It is valued because of its violet colour. Even though it is from quartz, it has more iron oxide (Fe2O3) than any other kind of quartz. Because of this, some experts think that its colour comes from the iron in it