Iolite derives its name from Greek, "ios" meaning violet and "lithos". The mineral cordierite was named after a French geologist, Mr. Cordier, who first studied it.
Iolite (Cordierite)
Chemical composition -- An aluminosilicate of magnesium and iron.
Iolite and Cordierite
Lux sapphire, Lynz sapphire and Water sapphire
Blue colour tourmaline ...
Calibrated Cordierite
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Iolite is a form of cordierite. It is pleochroic, which means
that it appears dark blue when viewed from one direction
and, when it is turned, it can appear almost colorless.
Iolite is also popularly known as "water sapphire." ...
It also rarely contains biotite, hornblende and cordierite. Can be found in San Diego,CA. Anthophyllite ...(Mg,Fe)7Si8O22(OH)2... hydrous magnesium iron silicate
Crystal sys.: orthorhombic
Color: gray, light green, light brown
SG: 2.8 - 3.2 ...
aka Cordierite, Dichroite, Spanish Lazulite, Vikings' Compass, Water Sapphire
The name iolite comes from the Greek ios ("violet").
5 - Treatment: None - Color: Violet blue [Astrological signs of Libra, Sagittarius & Taurus] - also known as Cordierite - Crystallizes in the form of masses, grains, and short prismatic crystals.
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.
Alternate names include dichroite and cordierite. Iolite crystallizes in the orthorhombic system and is highly pleochroic. Changes in color, or intensity of color can be seen when the stone is rotated and viewed at different angles.
Also known as Dichroite and Cordierite
Color: Most commonly blue, but can be violet, brown, or green
Hardness: 7 to 7.5
Transparency: Transparent, translucent ...
Also known as Cordierite and "water sapphire" is usually a blue to violet colored gemstone.
Iolite is also knows as the mineral cordierite and sometimes called water sapphire and lynx sapphire. The name means 'violet stone' and is a transparent, violet-blue, light blue, or yellow-gray and pleochroic; a single stone will show many colors.
Collecting minerals found in Scandinavia whose molecules are aligned similarly to the crystals in a polarizing filter, Ramskau put iolite (the gem variety of the mineral cordierite) to the test.
The large bluish stone which the gentleman acquired with the red stones proved to be iolite, sometimes called cordierite or water-sapphire (Saphire d'eau), a stone seldom seen in this country.
One of the names comes from the Greek "ion", meaning "violet", while the name cordierite comes from the French geologist, Pierre Louis Cordier. Another common name is "dichroite" from its strong dichroic nature. Insoluble in acids.
Gem info: ...
It is also called by others names such as Cordierite from the French mineralogist Pierre Louis Antoine Cordier; another is Dichroite from the Greek word meaning « two colored », because of the strong pleochroism of iolite.
Iolite: Transparent, deep blue to yellowish-gray, also called dichroite or cordierite, similar in color to sapphire but not as hard, iolite is relatively new to jewelry. Composition: magnesium aluminum silicate; hardness 7.3. Search Iolite ...
Iolite A translucent gem of cordierite, a silicate of aluminum and magnesium. Shows two or more colors depending on how it is viewed.
On the southern shores of the Moray Firth, there are several occurences of metamorphic minerals, including epidote, kyanite, garnet and cordierite. Barite crystals have also been found near Portknockie as crusts of small crystals.
Named from ios the Greek word for violet it is a purplish blue hard cordierite mineral. Read more in our Gemstones & Minerals Glossary
Above is an example of Iolite.
IRIDESCENT BEADS ...
 See also: Color, Stone, Iolite, Gemstone, Mineral
  
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