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
Sterling Silver Necklace with Iolite - Moon and Star Pendant
A delicate crescent moon has a suspended star and planet in this whimsical design. If you liked Carrie's crescent moon pendant in Sex & the City 2, you'll love this design which has the same chic look but is more delicate in scale.Only $150.00 at Gemvara
no photoSterling Silver Necklace with Iolite - Moon and Star Pendant
$150.00
Gemvara
Chalcedony and Iolite Necklace in Gold Vermeil, One Size
Make a statement with this gemstone necklace featuring a cushion shaped chalcedony gemstone that is bezel-set in gold vermeil with faceted iolite gemstones along the chain.Only $108.00 at Blue Nile
no photoChalcedony and Iolite Necklace in Gold Vermeil, One Size
$108.00
Blue Nile
Round Rhodolite Garnet Sterling Silver Necklace with Iolite & White Sapphire - Snowman Pendant
Three brilliant gems shine in this classic three-stone pendant style for yesterday, today, and tomorrow.Only $230.00 at Gemvara
no photoRound Rhodolite Garnet Sterling Silver Necklace with Iolite & White Sapphire - Snowman Pendant
$230.00
Gemvara
14K Rose Gold Bracelet with Iolite - Gemstones By The Yard Star Of David Bracelet
A layerable essential, handcrafted in your choice of gems and metals, featuring a Star of David in pave-set gemstones. Adjustable 7-7.5 chain."Only $515.00 at Gemvara
no photo14K Rose Gold Bracelet with Iolite - Gemstones By The Yard Star Of David Bracelet
$515.00
Gemvara
Sterling Silver Necklace with Iolite & Aquamarine - Arrow in My Heart Pendant
We like to think that Cupid was somehow involved with this fun, infatuating pendant.Only $305.00 at Gemvara
no photoSterling Silver Necklace with Iolite & Aquamarine - Arrow in My Heart Pendant
$305.00
Gemvara
Sterling Silver Promise Ring with Amethyst & Iolite - Simple Quartet Ring
A quartet of stunning, center stones shines in this vintage-inspired beauty, handcrafted in your choice of gemstones and metals.Only $280.00 at Gemvara
no photoSterling Silver Promise Ring with Amethyst & Iolite - Simple Quartet Ring
$280.00
Gemvara
Round Iolite 14K White Gold Earrings - Flower Bud Earrings
In a tribute to spring, each of these earrings is shaped like a delicate bud bursting open to reveal a sparking gem inside.Only $380.00 at Gemvara
no photoRound Iolite 14K White Gold Earrings - Flower Bud Earrings
$380.00
Gemvara
Round Iolite Sterling Silver Engagement Ring - Spotlight Ring
Classically modern with clean, simple lines, this contemporary ring lets the gemstone take center stage.Only $280.00 at Gemvara
no photoRound Iolite Sterling Silver Engagement Ring - Spotlight Ring
$280.00
Gemvara
Sterling Silver Mother's Ring with Iolite & Rock Crystal - Double Embrace Ring
Two, 4mm round-cut gemstones are held in the curve of this stunning, contemporary design. Choose your gems and metal.Only $220.00 at Gemvara
no photoSterling Silver Mother's Ring with Iolite & Rock Crystal - Double Embrace Ring
$220.00
Gemvara
Sterling Silver Promise Ring with Iolite & Yellow Sapphire - Remember Forever Ring
Two gems wrapped in a knot to remember this moment forever.Only $160.00 at Gemvara
no photoSterling Silver Promise Ring with Iolite & Yellow Sapphire - Remember Forever Ring
$160.00
Gemvara
Sterling Silver Mother's Ring with London Blue Topaz & Iolite - Double Embrace Ring
Two, 4mm round-cut gemstones are held in the curve of this stunning, contemporary design. Choose your gems and metal.Only $215.00 at Gemvara
no photoSterling Silver Mother's Ring with London Blue Topaz & Iolite - Double Embrace Ring
$215.00
Gemvara
14K Yellow Gold Bracelet with Iolite - Gemstones By The Yard Cross Bracelet
A layerable essential, handcrafted in your choice of gems and metals, featuring a cross in pave-set gemstones. Adjustable 7-7.5 chain."Only $500.00 at Gemvara
no photo14K Yellow Gold Bracelet with Iolite - Gemstones By The Yard Cross Bracelet
$500.00
Gemvara
Mystic Marquise Chalcedony/Iolite/Quartz Ring with Diamonds - Alexis Bittar Fine
Alexis Bittar FineMystic Marquise Chalcedony/Iolite/Quartz Ring with DiamondsDetailsLight 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...Only $895.00 at Neiman Marcus
no photoMystic Marquise Chalcedony/Iolite/Quartz Ring with Diamonds - Alexis Bittar Fine
$895.00
Neiman Marcus
Oval Iolite Sterling Silver Engagement Ring with Peridot - Kira Ring
Polished, tailored and modern, this three-stone style has a streamlined design. This style's sleek bezel settings are especially perfect for the active woman.Only $260.00 at Gemvara
no photoOval Iolite Sterling Silver Engagement Ring with Peridot - Kira Ring
$260.00
Gemvara
Round Black Onyx Sterling Silver Earrings with Iolite & Rhodolite Garnet - Oleander Drop Earrings
Elegant oleander petals surround centered gemstones, making this pair a verdant addition to your jewelry box.Only $410.00 at Gemvara
no photoRound Black Onyx Sterling Silver Earrings with Iolite & Rhodolite Garnet - Oleander Drop Earrings
$410.00
Gemvara
This Site Awarded
Available IOLITE specimens:
see this List of ALL specimens including SOLD ones
 

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