Color: The color of pearls varies with the mollusk and its environment. It ranges from black to white, with the rose of Indian pearls esteemed most. Other colors are cream, gray, blue, yellow, lavender, green, and mauve. All occur in delicate shades. Cultured pearls are being produced in virtually every color of the rainbow.
Opal is given as a symbol of hope, happiness and truth.
Color: Opal is fundamentally colorless, but such material is rarely found. Disseminated impurities generally impart to opal various dull body colors that range from the yellows and reds derived from iron oxides to black from manganese oxides and organic carbon. The milkiness of many white and gray opals is attributable to an abundance of tiny gas-filled cavities in them.
Lapis Lazuli is a gemstone compared to stars in the sky.
Stone's names: Lapis Lazuli, Lazurite.
Color: Lapis Lazuli occurs in various shades of blue with some qualities being speckled with white calcite and some with yellow pyrite. The finest Lapis Lazuli is even blue color with little or no veining from other elements.
Color: The versatile garnet comes in a virtual rainbow of colors, including pink, red, purple, orange, yellow, violet, green, colorless, occasionally black, brown and many shades of red and green. The most common color of garnets is reddish brown. Bohemian Garnet is deep red gemstone, Russian Demantoid and African Tsavorite are vibrant green.