The range of colours available in an image or output process. A colour is said to be "out of gamut" when its position in one device's colour space cannot be directly translated into another device's colour space.

A mineral or rock, which can be used in jewelry after cutting or faceting and polishing. Most gemstones have little beauty in the rough state. After a skilled cutting and polishing of a gem, its full colour and lustre can be seen. Gemstones are classified into two categories, precious and semi-precious, on the basis of their characteristics. Precious stones include diamonds, emeralds, rubies, and sapphires whereas semi-precious stones are Alexandrite, Amethyst, Aquamarine, Citrine, Garnet, Iolite, Onyx, Opal, Pearl, Peridot, Tanzanite, Topaz, Tourmaline etc.