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Home Gemstones Pleochroic Gems

Pleochroic Gemstones

Explore natural loose pleochroic gemstones chosen for their fascinating angle-dependent color. These gems can reveal different hues as they are turned, making each stone distinctive for jewelry design or collecting.

Pleochroic Gems Weight
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0.39ct Violet Iolite, Marquise, VS

7.6 x 3.9 mm

$ 15.54

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1.64ct Red Tourmaline, Oval, Transparent

8 x 6 mm (calibrated)

$ 28.10

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2.25ct Yellow Sphene, Oval, Transparent

7.6 x 6.8 mm

$ 11.21

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2.09ctw Blue Tanzanite, Pear Shape, VS

5.2 x 3.2 mm

$ 80.14

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2.48ctw Pink Tourmaline, Round, Transparent

6.5 mm (calibrated)

$ 41.10

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11.01ct Black Tourmaline, Pear Shape, Opaque

16 x 13.8 mm

$ 54.83

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0.66ct Green Tourmaline, Emerald Cut, VVS-VS

4.6 x 4.5 mm

$ 32.87

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3.73ct Blue Tanzanite, Oval, Translucent

9 x 7 mm (calibrated)

$ 32.28

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1.73ct Pink Tourmaline, Round, Transparent

7 mm (calibrated)

$ 29.65

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2.04ct Blue Kyanite, Oval, SI

8 x 6 mm (calibrated)

$ 42.47

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7.43ct Black Tourmaline, Emerald Cut, Opaque

16 x 8 mm (calibrated)

$ 37.00

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10.21ctw Bi-Color Tourmaline, Fancy, Transparent

12.1 x 11 mm

$ 254.23

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1.54ctw Blue Tanzanite, Pear Shape, VS

5.2 x 4 mm

$ 59.05

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1.20ct Blue Kyanite, Oval, SI

7 x 5 mm (calibrated)

$ 29.88

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7.52ct Black Tourmaline, Cushion, Opaque

14.5 x 10.4 mm

$ 37.45

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1.23ct Pink Tourmaline, Oval, VS

7.6 x 5.4 mm

$ 142.93

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2.49ct Pink Tourmaline, Emerald Cut, VVS-VS

9.3 x 6.5 mm

$ 90.93

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1.39ctw Blue Tanzanite, Pear Shape, VS

5.1 x 3.8 mm

$ 53.30

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1.25ct Pink Tourmaline, Emerald Cut, VVS-VS

7.4 x 5 mm

$ 90.39

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1.15ct Green Sphene, Oval, Transparent

7 x 5 mm (calibrated)

$ 6.31

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1.94ctw Multicolor Andalusite, Oval, VS

5 x 3 mm (calibrated)

$ 103.63

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0.90ct Green Tourmaline, Emerald Cut, VVS-VS

9.8 x 3.4 mm

$ 22.41

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1.82ct Green Tourmaline, Oval, VVS-VS

7.3 x 6.7 mm

$ 211.48

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2.12ct Blue Tanzanite, Oval, Transparent

9 x 7 mm (calibrated)

$ 18.34

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Why Buy Pleochroic Gems from GemSelect?

Shop Gems with Directional Color

Pleochroic gemstones are valued for the way they can show more than one color depending on viewing direction. This natural optical effect gives loose gems a dynamic personality, especially when viewed in hand or set in jewelry that allows movement and light from different angles.

Popular pleochroic gems may include varieties such as iolite, tanzanite, and andalusite, along with other stones where crystal structure creates visible color changes. The strength of the effect varies from gem to gem, so comparing photos, videos, descriptions, and gem details can help you choose the look you prefer.

Choosing Pleochroic Stones for Jewelry

When selecting a pleochroic gemstone for a ring, pendant, earrings, or a custom design, consider the face-up color, cutting style, size, shape, and how the gem will be oriented in the setting. A skilled cut can present an attractive dominant color while still allowing flashes of secondary hues as the stone moves.

For everyday jewelry, also review the gemstone species and durability information shown on the individual product page. Some pleochroic gems are better suited to protected settings or occasional wear, while others can work well in a wider range of designs.

Loose pleochroic gemstones showing angle-dependent colors

Color, Cut and Viewing Angle

The most enjoyable part of shopping for pleochroic gemstones is discovering how each stone behaves visually. One gem may appear blue from one direction and violet or gray from another; another may shift between earthy green, golden, or reddish tones. These subtle or dramatic changes make pleochroic gems appealing to collectors and jewelry makers who want something beyond a single static color.

Cut orientation plays an important role. The cutter must decide which color direction should face upward, balancing beauty, brilliance, shape, and weight. Because of this, two gemstones of the same variety can still look very different in finished form.

Buying Natural Loose Pleochroic Gemstones

GemSelect offers loose gemstones so you can choose the exact stone for your project. Review the measurements, carat weight, shape, clarity notes, and any available treatment or origin information listed for each individual gem before purchasing. This makes it easier to match a gemstone to your design requirements, preferred color direction, and budget.

Whether you are building a gemstone collection or sourcing a center stone for custom jewelry, pleochroic gems provide a memorable combination of natural color science and visual interest.

FAQ: Pleochroic Gemstones

What does pleochroic mean in gemstones?

Pleochroic gemstones can show different colors or color intensities when viewed from different directions. The effect is caused by the way light interacts with the internal crystal structure of the gem.

Are pleochroic gemstones the same as color-change gemstones?

No. Pleochroism is related to viewing angle, while color change is usually caused by different light sources, such as daylight and incandescent light. Some gems may have more than one optical effect, but the terms describe different phenomena.

Which gemstones are known for pleochroism?

Iolite, tanzanite, and andalusite are well-known examples, although pleochroism can appear in several gemstone species. The visible strength of the effect depends on the individual stone and how it is cut.

Is pleochroism a treatment?

No. Pleochroism is a natural optical property of certain crystals. Any treatment information relevant to a specific gemstone should be checked on that gem’s product details.

How should I choose a pleochroic gemstone online?

Look at the listed photos, videos if available, measurements, shape, and description. Since the appearance can vary by angle, choose the gem whose face-up color and secondary flashes best match your jewelry or collection goals.

GemSelect Certified Store Reviews

GemSelect: Over 22 Years in the Gemstone Business! Thank you for trusting us with your purchase!

Overall Rating -> 10 star ratings

Always get a nice gemstone. Just like the picture. Never disappointed

Posted By Ron T in June, 2026
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Overall Rating -> 9 star ratings

I've made several purchases over the last 8 years and I've never been less than happy with any of them.

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Easy and functional

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Overall Rating -> 10 star ratings

I was looking for high-quality amethyst on this site, and I was able to compare size, color, and weight in detail before making a purchase.

Posted By Atsuhisa in January, 2026
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Overall Rating -> 10 star ratings

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.

Posted By Jen in December, 2025
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Overall Rating -> 10 star ratings

Found a rock that met my need. Bought it!

Posted By Skot in May, 2026
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