Gemstones are minerals, stones that are formed from the results of geological processes whose elements consist of one or several chemical components that have high selling prices, and are in demand by collectors. Gemstones must pass the polishing stage before making jewelry.
In this world not all places produce gemstones. A stone is called a gem if it fulfills several conditions. Among others, have resilience, beauty, and scarcity. In Indonesia there are many areas that produce a variety of popular gemstones. Various types of popular gemstones originating from the regions of Indonesia, among others, in the provinces of Aceh and Padang, which are famous for the type of Idocrase Banten stone, there are Kalimaya stones, in Lampung with charming types of grapes and cempaka types, on the island of Borneo with Kecubung amethys), and diamonds (diamonds). Gemstones have names from letters a to z which are classified according to their hardness known as the Mohs Scale from 1 to 10. The most desirable gems in the world are crystalline ones which are other than precious stones such as Diamonds, Emerald, Ruby and Sapphire, stones- grape agate such as Biru Langit, bungur or kecubung from Tanjung Bintang, Lampung is currently being hunted by collectors because of its crystal quality.
