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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (332): Iolite Clear All
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ID: 3404801 pcs
3.77ct Iolite
11.93mm x 9.76mm x 6.79mm
USD 177.19
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ID: 3450731 pcs
3.09ct Iolite
12.67mm x 8.39mm x 5.95mm
USD 145.23
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ID: 2800196 pcs
1.17ctw Iolite
5.07mm x 3.14mm x 2.46mm
USD 7.02
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ID: 4126851 pcs
1.35ct Iolite
7.17mm x 7.13mm x 5.05mm
USD 27.00
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ID: 4300781 pcs
0.69ct Iolite
7.59mm x 4.90mm x 3.30mm
USD 13.80
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ID: 27968310 pcs
2.03ctw Iolite
5.03mm x 3.14mm x 2.01mm
USD 12.18
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ID: 4110014 pcs
1.48ctw Iolite
5.83mm x 3.94mm x 3.03mm
USD 30.46
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ID: 4126794 pcs
2.38ctw Iolite
6.79mm x 4.92mm x 3.52mm
USD 47.60
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ID: 4086922 pcs
1.19ctw Iolite
8.05mm x 4.08mm x 3.52mm
USD 24.56
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ID: 4300741 pcs
0.38ct Iolite
6.39mm x 4.48mm x 2.52mm
USD 7.60
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ID: 41046110 pcs
2.14ctw Iolite
4.99mm x 3.14mm x 2.57mm
USD 22.00
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ID: 4107081 pcs
1.01ct Iolite
7.43mm x 4.87mm x 3.58mm
USD 20.81
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ID: 4127374 pcs
2.29ctw Iolite
7.04mm x 4.89mm x 3.41mm
USD 45.80
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ID: 4089325 pcs
2.27ctw Iolite
7.93mm x 3.98mm x 3.18mm
USD 46.85
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ID: 4084521 pcs
0.78ct Iolite
7.94mm x 5.58mm x 3.34mm
USD 16.10
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ID: 4126251 pcs
0.90ct Iolite
8.43mm x 4.99mm x 4.54mm
USD 18.00
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ID: 4305431 pcs
0.45ct Iolite
5.89mm x 4.08mm x 2.61mm
USD 9.00
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ID: 4088964 pcs
1.88ctw Iolite
6.85mm x 4.80mm x 2.78mm
USD 38.80
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ID: 2795695 pcs
2.58ctw Iolite
6.10mm x 3.89mm x 2.99mm
USD 30.96
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ID: 4088974 pcs
1.23ctw Iolite
5.85mm x 3.85mm x 2.66mm
USD 25.39
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ID: 3652191 pcs
1.08ct Iolite
8.89mm x 4.82mm x 3.42mm
USD 32.40
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Iolite
The name iolite comes from the Greek "ios", which means violet. The Vikings probably mined iolite from deposits in Norway and Greenland. Viking sailors used iolite as a polarizing filter to find the sun on cloudy days for safe offshore navigation. Iolite is usually a purplish blue when cut properly, with a softness to the color that is quite attractive. The favorite color is that pretty, violet blue that is unlike other gemstones. Pleochroism is very pronounced in iolite and is seen as three different color shades in the same stone. In viewing an iolite stone, the colors violet blue, yellow gray and a light blue can be seen; all a result of pleochroism.

Its hardness of 7-7.5 makes iolite a suitable jewelry stone, though the presence of cleavage must be taken into account and some care taken, such as protection from blows. Iolite, a gem variety of the mineral cordierite, is an unusual stone indeed that is not commonly seen in jewelry. Iolite is known as the gemstone for clear vision.
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Size and Weight

Gems are always measured in Millimeter (mm)

Dimensions are given as;
length x width x depth,
except for round stones which are;
diameter x depth

Select gems by size, not by weight!
Gem varieties vary in density, so carat weight is not a good indication of size

Note: 1ct = 0.2g

Size Comparison Chart