A silicate of alumina, iron, and magnesia, having a bright blue color and vitreous luster; cordierite. It is remarkable for its dichroism, and is also called dichroite. A variety called Caribbean iolite has a lighter blue color.
(also called dichroite or water sapphire). A silicate of alumina, iron, and magnesia which is usually violet-blue, but can be deep blue, light blue-gray, and yellow-white. Makes a beautiful transparent gemstone which is remarkable for its dichroism.
It is a mineral which is used as a gemstone. It occurs in deep blue, purple, light blue-gray, and yellow-white.
A deep blue stone, whose name comes from the Greek word meaning “violet.†In ancient times the Vikings used iolite to aid in navigation – a slab of iolite would be gazed upon to aid direction, because iolite can bear a different hue when viewed at different angles, helping the mariner differentiate north from south. Not surprisingly, iolite was believed to ensure safe journeys.
a transparent blue-violet stone; the lighter colors show more of the violet hue. Even so, this is still a much bluer stone than amethyst.
Iolite is a gemstone with a slight variability in chemical composition between stones. It exhibits a blue-to-violet range of colors and sometimes shows a brownish streak. On Mohs’ scale of hardness, iolite is 7-7.5. It has a greasy luster and primary sources include Burma (Myanmar), Brazil, India, Madagascar, Sri Lanka and the United States. (See Iolite Facts.) (Note: Sources listed in order of primary and secondary deposits.)
is a violet blue gemstone also called water sapphire, likened to blue sapphire when cut. It is found as small, transparent, water-worn pebbles washed along in riverbeds and deposited ashore in India, Sri Lanka, Mozambique, Zimbabwe and Brazil.
Sometimes called 'Water Sapphire' because of it's pretty blue violet color which is similar to light blue sapphires, Iolite is a gemstone variety of cordierite. Pleochroism (color changes visible depending on the direction of the light) is very strongly evident in Iolite, and because of this quality, it has been said to be used by the seafaring Vikings for navigation even under cloudy skies. Because of this Iolite is also sometimes known as the Viking's Compass.
A cordierite mineral used as a gemstone, typically deep blue or purplish blue.
A semiprecious gemstone with a violet blue color.
Iolite is a transparent, violet-blue, grayish blue mineral. Iolite has a hardness of 7 - 7.5. Iolite is found in Sri Lanka, India, Madagascar and Burma.
Iolite (meaning 'violet stone'), also known as water sapphire and lynx sapphire, is a transparent, violet-blue, light blue, or yellow-gray mineral. Iolite is pleochroic; a single stone will show many colors (in the case of Iolite, violet-blue, light blue, and yellow-gray). Iolite is found in Sri Lanka, India, Madagascar and Burma.
A blue gemstone named from "ios," which is Greek for violet. Historically used by Vikings to shield their eyes from the sun during sea voyages.
A mineral used as a gemstone and appears as deep blue, light blue-gray, and yellow-white.
A mineral in shades of deep blue, light blue-grey, and yellow-white
