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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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7.06ct Blue Tanzanite, Cushion, VS

13 x 9 mm (calibrated)

$ 2,965.82

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2.14ctw Multicolor Andalusite, Oval, VS

6 x 4 mm (calibrated)

$ 114.74

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1.69ctw Multicolor Andalusite, Oval, VS

5 x 3 mm (calibrated)

$ 90.28

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2.72ct Blue Kyanite, Round, SI

8.5 mm (calibrated)

$ 74.50

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6.82ct Blue Tanzanite, Oval, VVS

14 x 10 mm (calibrated)

$ 1,901.96

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1.19ct Yellow Sphene, Pear Shape, VS-SI

9 x 6 mm (calibrated)

$ 41.19

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6.83ct Blue Tanzanite, Trillion, VVS-VS

11.9 x 11.3 mm

$ 3,142.09

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1.34ct Green Tourmaline, Cushion, VVS-VS

10.6 x 5.6 mm

$ 133.46

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2.37ctw Multicolor Andalusite, Round, VS-SI

4 mm (calibrated)

$ 116.85

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24.08ct Green Tourmaline, Oval, VVS

17.4 x 14.5 mm

$ 3,997.28

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5.84ct Bi-Color Tourmaline, Emerald Cut, SI

17 x 17 mm (calibrated)

$ 467.20

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2.91ctw Blue Kyanite, Oval, SI

8 x 6 mm (calibrated)

$ 50.48

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3.90ct Pink Tourmaline, Emerald Cut, VS-SI

11.6 x 5.8 mm

$ 160.23

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3.27ct Pink Tourmaline, Emerald Cut, VS-SI

10.7 x 6.2 mm

$ 206.00

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10.52ct Blue Tanzanite, Oval, VVS

16 x 12 mm (calibrated)

$ 4,802.84

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1.70ct Blue Kyanite, Round, SI

7 mm (calibrated)

$ 46.56

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10.38ct Black Tourmaline, Pear Shape, Opaque

16 x 12.7 mm

$ 51.69

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12.25ct Green Tourmaline, Oval, VVS-VS

15.7 x 12.8 mm

$ 2,033.50

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3.23ctw Multicolor Andalusite, Round, VS-SI

4 mm (calibrated)

$ 143.42

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6.03ct Black Tourmaline, Heart, Opaque

11 x 11 mm (calibrated)

$ 79.83

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1.67ct Green Tourmaline, Fancy, VVS

7.8 x 5.7 mm

$ 199.60

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2.60ct Green Tourmaline, Emerald Cut, VVS

21.1 x 4 mm

$ 71.21

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0.87ct Green Sphene, Emerald Cut, VS

8 x 4.2 mm

$ 37.26

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8.15ct Blue Tourmaline, Fancy, Transparent

20 x 18.3 mm

$ 238.51

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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.

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