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IOLITE, the gemstone variety of cordierite

VARIETY INFORMATION:

  • VARIETY OF: Cordierite, Mg2Al4Si5O18, Magnesium Aluminum Silicate.
  • USES: Gemstone
  • COLOR: Various shades of yellowish gray to blue to a blue violet, deeper along the crystal axis.
  • INDEX OF REFRACTION: 1.52 - 1.57
  • BIREFRINGENCE: is good
  • HARDNESS: 7 - 7.5
  • CLEAVAGE: poor in one direction
  • CRYSTAL SYSTEM: orthorhombic
  • We have natural Iolite Mineral Specimens
    For Iolite Jewelry, see -->  IOLITE JEWELRY

Iolite is a popular and interesting gemstone, and is the gem variety of the mineral cordierite. It has a delicate and quite pretty violet blue color that is unlike other gemstones, although it has been compared to a light blue sapphire. It is this reason that it is sometimes known as "water sapphire". Although the color is attractive and popular, iolite is not extremely rare and is therefore affordable.

Pleochroism is very pronounced in iolite and is seen as three different color shades in the same stone. In the viewing an iolite stone, the colors violet blue, yellow gray and a light blue can be seen, all a result of pleochroism. Tanzanite is a blue-violet gemstone variety of the mineral zoisite, has strong pleochroism as well and can be easily confused with iolite. However, tanzanite is usually more strongly colored, its pleochroic colors vary from dark blue, green-yellow and red-purple and it has greater fire.

The major sources of gem grade iolite come from Sri Lanka, India, Madagascar and Burma.

Iolite Jewelry - Hover over an item for more information
Mystic Marquise Chalcedony/Iolite/Quartz Ring with Diamonds - Alexis Bittar Fine
Light oxidized sterling silver ring, by Alexis Bittar. Fancy-cut chalcedony, iolite, and ocean blue quartz set in claw prongs. Pave diamond claw prongs. 0.08 total diamond carat weight. Split shank; slim band. 1inL. Size 7.Only $895.00 at Neiman Marcus
no photoMystic Marquise Chalcedony/Iolite/Quartz Ring with Diamonds - Alexis Bittar Fine
$895.00
Neiman Marcus
Sterling Silver Sky Blue Topaz, Indigo Blue Iolite, Rainbow Moonstone Hook Earrings Jewelry
This Earrings was handmade by a master artisan and is one of a kind.Only $187.49 at JeGem.com
no photoSterling Silver Sky Blue Topaz, Indigo Blue Iolite, Rainbow Moonstone Hook Earrings Jewelry
$187.49
JeGem.com
Elements Maldivian Rose-Cut Crystal & Vine Link Earrings - Alexis Bittar
Alexis Bittar earrings from the Elements Maldivian Collection. Golden vine links with porous finish. Dark iolite-colored glass and mother-of-pearl doublets. Pave Swarovski crystals set in silvertone pebbles. Post backs for pierced ears. 2 4/5inL x 4/5inW.Only $150.00 at Neiman Marcus
no photoElements Maldivian Rose-Cut Crystal & Vine Link Earrings - Alexis Bittar
$150.00
Neiman Marcus
Dangling Clip-On Maldivian Earrings - Alexis Bittar
Dangling clip-on earrings by Alexis Bittar in porous golden settings. Light iolite glass and mother-or-pearl doublet drops. Pave Swarovski crystals. Clip-on backs padded for comfort. 2 1/4inL. Imported.Only $295.00 at Neiman Marcus
no photoDangling Clip-On Maldivian Earrings - Alexis Bittar
$295.00
Neiman Marcus
Ross-Simons 10.50ct t.w. Multi-Stone, Fire Opal Tennis Bracelet in Silver
Take a walk on the bright side. In a vibrant rainbow design, this colorful tennis bracelet lines up fire opals with 10.50 ct. t.w. multi-stones, including citrines, peridots, apatites, iolites, tanzanites, amethysts, garnets and rhodolite garnets. Box...Only $175.00 at Ross-Simons
no photoRoss-Simons 10.50ct t.w. Multi-Stone, Fire Opal Tennis Bracelet in Silver
$175.00
Ross-Simons
Jardin Mystere Beetle Lucite Bracelet, Clear - Alexis Bittar
Lucite bracelet from the Alexis Bittar Jardin Mystere Collection. Golden and silvertone metal. White quartz/labradorite doublet, light iolite-colored glass/mother-of-pearl doublet, aqua crackle glass, and Swarovski crystals. Hinged; magnetic clasp....Only $395.00 at Neiman Marcus
no photoJardin Mystere Beetle Lucite Bracelet, Clear - Alexis Bittar
$395.00
Neiman Marcus
Ross-Simons 6.10 ct. t.w. Multi-Stone Bangle Bracelet in Sterling Silver. 7"
An exuberant expression of color and design: our mutli-stone bangle is finely crafted with .35 ct. t.w. blue topaz, .75 ct. t.w. violet iolite, 1.20 ct. t.w. purple amethyst, 1.60 ct. t.w. red garnet, 1.00 ct. t.w. yellow citrine, and 1.20 ct. t.w....Only $221.25 at Ross-Simons
no photoRoss-Simons 6.10 ct. t.w. Multi-Stone Bangle Bracelet in Sterling Silver. 7"
$221.25
Ross-Simons
Ross-Simons .90ct t.w. Amethyst, .35ct t.w. Iolite Koi Earrings, Diamonds, Garnets
Whimsical and expressive, these fun koi earrings will be perfect to show your love of the water! Decorated by .90 ct. t.w. amethysts and .35 ct. t.w. violet iolites with sparkling diamond accents and .15 ct. t.w. garnet rounds, this subtle design could...Only $131.25 at Ross-Simons
no photoRoss-Simons .90ct t.w. Amethyst, .35ct t.w. Iolite Koi Earrings, Diamonds, Garnets
$131.25
Ross-Simons
18 Inch Indigo Blue Iolite Gold Over Sterling Silver Necklace Jewelry
This Necklace was handmade by a master artisan and is one of a kind.Only $764.99 at JeGem.com
no photo18 Inch Indigo Blue Iolite Gold Over Sterling Silver Necklace Jewelry
$764.99
JeGem.com
Jardin Mystere Purple Crystal Beetle Clip-On Earrings - Alexis Bittar
Beetle clip-on earrings from the Alexis Bittar Jardin Mystere Collection. Polished golden and silvertone metal. Pave Swarovski crystals. Iolite-colored glass and mother-of-pearl doublets. Clip-on backs are padded for comfort. 1 2/3inL. Made in USA.Only $295.00 at Neiman Marcus
no photoJardin Mystere Purple Crystal Beetle Clip-On Earrings - Alexis Bittar
$295.00
Neiman Marcus
Ross-Simons .70ct t.w. Amethyst, .30ct t.w. Iolite Koi Necklace, Diamonds, Garnets. 18"
This whimsical koi pendant necklace is the perfect expression of your love for the water! Decorated by .70 ct. t.w. amethysts and .30 ct. t.w. violet iolites with sparkling diamond accents and .09 ct. t.w. garnet rounds, this necklace dazzles with...Only $116.25 at Ross-Simons
no photoRoss-Simons .70ct t.w. Amethyst, .30ct t.w. Iolite Koi Necklace, Diamonds, Garnets. 18"
$116.25
Ross-Simons
Ross-Simons 7.80ct t.w. Multi-Stone, Fire Opal Inside-Outside Hoop Earrings
These inside-outside hoop earrings are sparked with a vibrant wash of fire opals and 7.80 ct. t.w. multi-stones, including citrines, peridots, apatites, iolites, tanzanites, amethysts, garnets and rhodolite garnets. Snap-bar, sterling silver earrings.Only $250.00 at Ross-Simons
no photoRoss-Simons 7.80ct t.w. Multi-Stone, Fire Opal Inside-Outside Hoop Earrings
$250.00
Ross-Simons
Oval Iolite and White Topaz Ring in Sterling Silver
Rich in color, this iolite ring is surrounded by a sparkling halo of micropave white topaz gemstones in sterling silver.Only $175.00 at Blue Nile
no photoOval Iolite and White Topaz Ring in Sterling Silver
$175.00
Blue Nile
Sterling Silver Indigo Blue Iolite, Sky Blue Topaz, Pearl, Tanzanite, Rainbow Moonstone Pendant
This Pendant was handmade by a master artisan and is one of a kind.Only $218.24 at JeGem.com
no photoSterling Silver Indigo Blue Iolite, Sky Blue Topaz, Pearl, Tanzanite, Rainbow Moonstone Pendant
$218.24
JeGem.com
Sterling Silver Indigo Blue Iolite Eternity Ring Jewelry
This Ring was handmade by a master artisan and is one of a kind.Only $121.49 at JeGem.com
no photoSterling Silver Indigo Blue Iolite Eternity Ring Jewelry
$121.49
JeGem.com

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