Red  is the synbol of life, strength, vitality and the physical nature. In nature, the colour red is associated with heat, fire, anger. For healing, red is excellent  in all blood deficiency diseases such as anemia, in deficient nutrition, depression, or lethargy.    

Gems: Almandite, Coral, Corundum, Garnet, RedJasper, Rhodolite, Ruby, Sardonyx, Spinel, Spessartite, Sunstone, Topaz, Vanadinite.

Blue is the symbol of inspiration, devotion, infinity, and religious aspirations. It  lifts, exalts, and inspires one toward greater heights of endeavor and attainment. It produces a calm, peaceful radiation, which has sleep inducing qualities. Because blue is associated with a lack of warmth, it is to be used when inflammation is present, or when any internal bleeding or nervous condition exists. It is cooling, sedative, astringent  in healing.

Gems: BlueLaceAgate, Dumortierite, Euclase, Goldstone, Halite, Hauyne, Hemimorphite, Indicolite,  Iolite, Kyanite, labradorite, LapisLazuli, Larimar, Moonstone, Sapphire, Sodalite, Spectrolite, Tanzanite, Tourmaline, Turquoise.

Orange is the symbol of energy. It is composed of red and yellow. Red symbolizes personality and yellow symbolizes wisdom.Therefore, through an integration of these two, we can overcome anger and establish self-control. For healing,orange is essential for health and vitality. It is warm, positive, and stimulating, influencing primarily the vital problem of assimilation and circulation. It regulates the intake of food.    

Gems:  Azurite, Carnelian, Chiastolite, Datolite, Fire Agate, Sapphire, Serandite, Vanadinite, Wulfenite.

most of tehse stones we havent even heard of?? how do we differentiate? i think i shall go for red if i get a chance:)

Green is the symbol  of harmony, sympathy, creativity, health, abundance, of  nature in general. Green is the merging of yellow (soul) and blue (spirit). It appears in the spectrum at the point of color balance, between the first three rays (which are more concerned with the physical aspect) and the last three rays (which relate to the spiritual aspect). Green reaches outward in a horizontal manner, blue reaches upward in a vertical manner.  

Gems: Alexandrite, Apatite, Apophyllite, Aquamarine, Aventurine, Azurite, Bloodstone, Chrysoprase, Demantoid, Diopside, Dioptase, Emerald, Feldspar,      Hiddenite, Jade, Jadeite, Malachite, Mawsitsit, Moissanite, Moldavite,  Nephrite, Peridot, Prasiolite, Prehnite, Tsavorite, Unakite, Uvarovite, Variscite, Vesuvianite, Wavellite, Zoisite.