Types of gemstones can be divided into two. First, the so-called premium gemstone color precious stone. On the highest tier includes ruby, emerald (emerald), sapphire, and cat’s eye (the size of a cat’s eye). Characteristic stone hardness premium is approaching the level of the diamond. In the layer below it there are diamonds, jade, amatis (amethyst), topaz, turquoise, jaspis, agate, known as color semiprecious stone.
Prices of precious stones is determined crystal quality, the color emitted (younger or older), disability or not, clarity or clarity luster, as well as its privileges. For example, sapphire or ruby, the surface should be seen: no star or not. In the cat’s eye stone, there is a line (pivot) are visible when the light hit, and the line that makes it more expensive.
Noble stone or gemstone derived from a mixture of natural minerals that have natural chemical composition, crystal structure and different that can be transformed into various kinds of gemstones, and who clearly have a level of violence is different also, and is believed to have natural properties that also different.
Each type of gemstone has its advantages, and beauty, even properties that many people bring something credible advantages when used by the owner. In addition to belonging gemstone precious stones, some stones that come from nature that ordinary people called as agate / rock charm.