Ключевые слова: apatite, aquamarine, azurite, benitoite, blue, cavansite, celestite, chalcedony, chrysocolla, dumortierite, euclase, fluorite, gems, hemimorphite, illustration, indicolite, iolite, kyanite, labradorite, lapis, larimar, lazulite, moonstone, opal, sapphire, smithsonite, sodalite, spinel, tanzanite, topaz, turquoise, vivianite, zircon,