Natural Iolite Gemstones
Explore natural iolite gemstones in rich violet-blue shades, perfect for custom jewelry and collectors.
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Bi-color
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Black
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Blue Iolite
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Brown
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Golden
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Gray
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Green
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Multicolor
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Orange
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Pink
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Purple
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Red
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Turquoise
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Violet Iolite
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White
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Yellow
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Single |
Pairs |
Lots |
Faceted |
Cabochons |
0.27ct Blue Iolite, Emerald Cut, VS-SI
5 x 3 mm (calibrated)
$ 10.76
0.23ct Violet Iolite, Round, VS-SI
4.2 mm
$ 9.16
0.24ct Violet Iolite, Emerald Cut, VS-SI
5 x 3 mm (calibrated)
$ 9.56
0.20ctw Blue Iolite, Square, VS
2.7 x 2.5 mm
$ 7.97
0.30ct Violet Iolite, Emerald Cut, VS
5 x 3 mm (calibrated)
$ 11.95
0.26ct Violet Iolite, Marquise, VS
5.7 x 2.9 mm
$ 10.36
0.21ct Violet Iolite, Oval, VS
5 x 3 mm (calibrated)
$ 8.37
0.28ct Violet Iolite, Baguette, VS-SI
5 x 3 mm (calibrated)
$ 11.16
0.17ct Violet Iolite, Square, VVS
3.3 x 3.2 mm
$ 6.77
0.21ct Violet Iolite, Emerald Cut, VS
5 x 2.8 mm
$ 8.37
0.24ct Violet Iolite, Emerald Cut, SI
5 x 3 mm (calibrated)
$ 9.56
0.30ct Violet Iolite, Baguette, VS
5 x 3 mm (calibrated)
$ 11.95
0.24ct Violet Iolite, Emerald Cut, VS-SI
5 x 3 mm (calibrated)
$ 9.56
0.21ct Blue Iolite, Emerald Cut, VS
5 x 3 mm (calibrated)
$ 8.37
0.30ct Violet Iolite, Baguette, VS-SI
5 x 3 mm (calibrated)
$ 11.95
0.28ct Violet Iolite, Square, VVS
4 x 4 mm (calibrated)
$ 11.16
0.28ct Violet Iolite, Baguette, VS
5 x 3 mm (calibrated)
$ 11.16
0.25ct Blue Iolite, Emerald Cut, VS-SI
5 x 3 mm (calibrated)
$ 9.96
0.21ct Violet Iolite, Emerald Cut, VS-SI
5 x 3 mm (calibrated)
$ 8.37
0.32ct Violet Iolite, Baguette, VS
5 x 3 mm (calibrated)
$ 12.75
0.27ct Violet Iolite, Emerald Cut, VS
5 x 3 mm (calibrated)
$ 10.76
0.30ct Violet Iolite, Baguette, VS-SI
5 x 3 mm (calibrated)
$ 11.95
0.26ct Violet Iolite, Baguette, VS-SI
5 x 3 mm (calibrated)
$ 10.36
0.27ct Violet Iolite, Emerald Cut, VS-SI
5 x 3 mm (calibrated)
$ 10.76
Why Buy Iolite from GemSelect?
- Trusted Worldwide Since 2003
- Supplying natural gemstones to jewelers and collectors in 120+ countries
- Verified natural gemstones
- View All GemSelect Reviews on Bizrate
- Secure checkout and insured worldwide delivery
- 30-day returns and satisfaction guarantee
Natural Iolite Gemstones
Our natural iolite gemstones are carefully selected for their deep violet-blue color and excellent transparency. Also known as cordierite, iolite is prized for its unique pleochroism, showing different shades when viewed from different angles.
Loose Iolite Stones Online
Buy loose iolite stones online with confidence at GemSelect. Choose from a wide variety of shapes, sizes, and calibrated options, all backed by detailed specifications and worldwide shipping.
Iolite for Custom Jewelry
Iolite is a durable gemstone with a Mohs hardness of 7 to 7.5, making it suitable for rings, earrings, pendants, and bracelets. Its rich blue-violet tones offer an affordable alternative to sapphire for elegant jewelry designs.
Faceted Iolite Stones
Faceted iolite gemstones maximize brilliance and highlight the stone’s natural color shifts. Popular cuts include oval, round, pear, and cushion shapes for both classic and modern settings.
Iolite Cabochons
Iolite cabochons feature smooth, polished surfaces that emphasize color depth and subtle internal characteristics. They are ideal for distinctive designer pieces and artisan jewelry.
Calibrated Iolite Sizes
We offer calibrated iolite gemstones in standard sizes such as 6 mm, 7 mm, and 8 x 6 mm, making them easy to set into pre-made jewelry mountings.
Iolite Birthstone & Meaning
Iolite is often associated with intuition, clarity, and inner vision. It is sometimes linked to the zodiac sign Sagittarius and is valued by collectors for both its beauty and symbolism.
Learn more about the properties, history, and gemological details on our Iolite Information Page.
FAQs
Is iolite a natural gemstone?
Yes, our iolite gemstones are 100% natural. Any treatments, if present, are fully disclosed for complete transparency.
What makes iolite unique?
Iolite is known for strong pleochroism, meaning it can display different colors such as blue, violet, and gray depending on the viewing angle.
Is iolite suitable for everyday rings?
With a Mohs hardness of 7 to 7.5, iolite is durable enough for occasional daily wear, though protective settings are recommended for rings.
Is iolite the same as cordierite?
Yes, iolite is the gem-quality variety of the mineral cordierite. The names are often used interchangeably in the gem trade.
Do you offer iolite in calibrated sizes?
Yes, we stock calibrated iolite gemstones in standard millimeter sizes suitable for commercial and custom jewelry settings.
Is iolite a birthstone?
Iolite is not a traditional modern birthstone, but it is sometimes associated with Sagittarius and is occasionally used as an alternative December gemstone.
GemSelect Certified Store Reviews
GemSelect: Over 22 Years in the Gemstone Business! Thank you for trusting us with your purchase!
Overall Rating -> 8 
I've purchased things from GemSelect before. What you see is what you get, which is not always the case with gem sites online. You can find some good value with gem select, and I will buy from them again.
Overall Rating -> 10 
This is the first time I have used this site. I was dissatisfied with the quality of gems and supplies elsewhere and decided to try GemSelect. They are awesome! I was thrilled to see the variety and the great web performance. There was the ability to search for information as well as gems. Things like the clarity rating system and caret weight of the gems. I have always loved making things and I have just started to make jewelry as a business. However I have never made a ring before and have always wanted to. On GemSelect I was able to find good quality gems to use in my creations. I am so glad the website is so easy to use. Thank you GemSelect.
Overall Rating -> 10
The citrine gems are beautiful. I appreciated that each stone was individually shown on the website so I could see exactly what I was getting. No mystery person selecting random stones for me. The documentation included with each gem was high quality as well. Great price and arrived as expected.
Overall Rating -> 10
Ia've been searching for a source to get my gemstones for awhile now and was very happy to come across this website. Amazing variety for any income.
Overall Rating -> 10
Although the stones are smaller than I thought, I really don't think in millimeters, they are perfect. I plan to put one into a ring and the other into a necklace. Ordering was easy, contact kept me aware of how shipping was going, and delivery was sooner than expected. The quality of stones I have ordered in the past and this recent order is outstanding and stones I will be proud to wear.
Overall Rating -> 10
IT WAS GREAT SIMPLE I WAS ABLE TO MAKE AN ACCOUNT EASY AND WAS ABLE TO FAVORITE ALL OF MY FINAL SELECTED GEMS, I JUST LOVE IT.
