Iolite 7x5mm. Oval Shape "AAA" Color Super Bargain Gems ITEM#4825-22712 PRODUCT DETAILS    Stone/Shape: --    Stone/Color: --    Cut: Regular    Size: 7x5mm.  Approx    Origin: India    Color: AAA    Clarity: SI (Slight Inclusions)    Treatment: None    Overall Grade: "AB" Price per carat. $2.11

Iolite 7x5mm. Oval Shape "AAA" Color Super Bargain Gems

 

Price
$2.11 PER carat.

Iolite 4mm. Square Shape "AAA" Color Calibrated Gems ITEM#4825-15138 PRODUCT DETAILS    Stone/Shape: --    Stone/Color: --    Cut: Step Cut    Size: 4mm.  Approx    Weight (pcs.): 0.35 carat. Approx    Origin: India    Color: AAA    Clarity: EC (Eye Clean)    Treatment: None Price per piece. 15 - 29 30 - 59 60 - 119 120+ $3.34 $2.84 $2.56 $2.30

Iolite 4mm. Square Shape "AAA" Color Calibrated Gems

 

Price
$3.34 PER piece.

Iolite 12x8mm. Buff Top Pear Shape "A" Color Calibrated Gems ITEM#4825-16606 PRODUCT DETAILS    Stone/Shape: --    Stone/Color: --    Cut: Buff Top    Size: 12x8mm.  Approx    Weight (pcs.): 2.42 carat. Approx    Origin: India    Color: A    Clarity: EC (Eye Clean)    Treatment: None Price per piece. 1 - 1 2 - 3 4 - 7 8+ $78.84 $67.01 $60.31 $54.28

Iolite 12x8mm. Buff Top Pear Shape "A" Color Calibrated Gems

 

Price
$78.84 PER piece.

Iolite 10x7mm. Buff Top Pear Shape "AAA" Color Calibrated Gems ITEM#4825-16593 PRODUCT DETAILS    Stone/Shape: --    Stone/Color: --    Cut: Buff Top    Size: 10x7mm.  Approx    Weight (pcs.): 1.73 carat. Approx    Origin: India    Color: AAA    Clarity: EC (Eye Clean)    Treatment: None Price per piece. 2 - 3 4 - 7 8 - 15 16+ $40.22 $34.19 $30.77 $27.69

Iolite 10x7mm. Buff Top Pear Shape "AAA" Color Calibrated Gems

 

Price
$40.22 PER piece.

[Buy Iolite Gemstones] - [Buy Iolite Beads] - [Buy Iolite Jewelry] - [Buy Iolite Cabochons]

When Leif Eriksson and the other legendary Viking explorers ventured far out into the Atlantic Ocean, away from any coastline that could help them determine position, they had a secret gem weapon: Iolite. The Viking mariners used thin pieces of iolite as the world's first polarizing filter. Looking through an iolite lens, they could determine the exact position of the sun, and navigate safely to the new world and back.

The property that made iolite so valuable to the Vikings is extreme pleochroism. Iolite has different colors in different directions in the crystal. A cube cut from iolite will look a violetish blue almost like sapphire from one side, clear as water from the other, and a honey yellow from the top. This property led some people to call iolite "water sapphire" in the past, a name that is now obsolete.

Pleochroism may have been helpful in navigation but it makes things difficult for a gem cutter. If iolite is not cut from exactly the right direction, no matter the shape of the rough, its color will not show to its best advantage.

The name iolite comes from the Greek ios, which means violet. Iolite is usually a purplish blue when cut properly, with a softness to the color that can be quite attractive.

Iolite is readily available and surprisingly affordable. The better and richer the blue, the better. It is mined in India, Sri Lanka, Mozambique, Zimbabwe, and Brazil. The Vikings probably mined iolite from deposits in Norway and Greenland.

Iolite is relatively hard but should be protected from blows. With its attractive color and reasonable price, it may become a jewelry staple in the future.

Color: blue, violet-blue
Hardness: 7 – 7.5
Refractive index: 1.52 – 1.56
Density: 2.53 – 2.78
Chemical composition: Mg2Al3(AlSi5O18)
Crystal structure: orthorhombic
Origins: India, Brazil, USA, Canada, Madagascar, Sri Lanka, Burma (best material comes from India)

[Buy Iolite Gemstones] - [Buy Iolite Beads] - [Buy Iolite Jewelry] - [Buy Iolite Cabochons]