There's a variety colors in garnet, ranging from dark red, brown to green with yellow. Garnet is mostly known for its dark red color, the same as pomegranate seeds, and derives its name from from the Latin word malum granatum.

    The chemical composition and the causes of color in garnet are as follows:

* Pyrope (Mg3Al2Si3O12) dark red, almost black because of the mixture of Iron and Chromium

* Almandite (Fe3Al2Si3O12) dark red, red, brown due to Iron content.

* Rhodolite (Mg, Fe3Al2Si3O12) pink or pink-violet. These are a mixture of Pyrope and Almandite.

* Spessartite (Mn3Al2Si3O12) orange-yellow or orange red dur to Manganese.

* Uvarovite (Ca3Cr2Si3O12) emerald green due to Chromium.

* Grossularite (Ca3Al2Si3O12) white, green, yellow, brown, pink. If yellow with brown, it is called Hessonite due to its Iron content, and if green, it is called Tsavorite due to Vanadium and Chromium.

* Andradite (Ca3Fe2Si3O12) green, yellow, brown and black. If green, it is called Demantoid and gets its color from Chromium and Iron.

    Sources of garnet in Thailand are Chantaburi and Trad. This is good quality of garnet and is found in shades of dark red with black, red with brown, and brown. Also, it is found in Chaingmai, Mae-Hongsorn, Lampang, Chaingrai, Tak, Kumpeangpetch, Nakornsawan, Utai Thani, Chinat, Supanburi, Kanchnaburi, Chachoengsao, Chonburi, Rayong and in the nearly every province in the south of Thailand.

    Sources of garnet are Sri Lanka, Australia, Russia, Brazil, Africa, China, USA and others.

    Green Garnet or Tsavorite : the chemical components are calcium, aluminium, silicate (Ca3Al2Si3O12). this is a relatively new stone. An important source for Tsavorite is Tsavo National Park in kenya where it gets its name. The Tsavorite having a dark green color is the very expensive and rare.