См. также: preferential interest rate, preferable, prestigious, predict the weather
A gemstone (also called a gem, fine gem, jewel, precious stone, or semi-precious stone) is a piece of mineral crystal which, in cut and polished form, is used to make jewelry or other adornments. (Wikipedia)
"There are lots of varieties of quartz, and many of them are beautiful — as beautiful as what you'd call a precious stone." (ABC News)
