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Home › Gemstones › Natural Untreated Gemstones

Natural Untreated Gemstones

Discover genuine untreated gemstones selected for natural beauty, rarity, and authenticity.

Natural Untreated Gemstones Weight
Natural Untreated Gemstones Size
Natural Untreated Gemstones Clarity
Natural Untreated Gemstones Price
Natural Untreated Gemstones Treatment

Size Explained

Choose Size or Size Range
For Example: 6-7
For Example: 8-9
Bi-color Natural Untreated Gemstones
Black Natural Untreated Gemstones
Blue Natural Untreated Gemstones
Brown Natural Untreated Gemstones
Golden Natural Untreated Gemstones
Gray Natural Untreated Gemstones
Green Natural Untreated Gemstones
Multicolor Natural Untreated Gemstones
Orange Natural Untreated Gemstones
Pink Natural Untreated Gemstones
Purple Natural Untreated Gemstones
Red Natural Untreated Gemstones
Turquoise Natural Untreated Gemstones
Violet Natural Untreated Gemstones
White Natural Untreated Gemstones
Yellow Natural Untreated Gemstones
Single
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Lots
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14.11ct Multicolor Agate, Oval, Opaque

14.11ct Multicolor Agate, Oval, Opaque

14 x 14 mm (calibrated)

$ 13.35

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0.82ct Green Tourmaline, Emerald Cut, VS

0.82ct Green Tourmaline, Emerald Cut, VS

12.1 x 2.9 mm

$ 21.56

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20.92ct Green Jadeite, Oval, Translucent

20.92ct Green Jadeite, Oval, Translucent

24 x 17 mm

$ 57.30

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1.10ct Gray Sillimanite Cat'S Eye, Oval, Transparent

1.10ct Gray Sillimanite Cat'S Eye, Oval, Transparent

8 x 5 mm (calibrated)

$ 3.62

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34.77ct Brown Jasper, Fancy, Opaque

34.77ct Brown Jasper, Fancy, Opaque

37.5 x 11.2 mm

$ 6.92

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4.30ctw Multicolor Spectrolite, Oval, Opaque

4.30ctw Multicolor Spectrolite, Oval, Opaque

10 x 8 mm (calibrated)

$ 19.66

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1.55ct Purple Spinel, Cushion, VVS-VS

1.55ct Purple Spinel, Cushion, VVS-VS

6.7 x 6.4 mm

$ 122.27

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24.20ct Multicolor Agate, Fancy, Translucent
Agate Product Video (745199)

24.20ct Multicolor Agate, Fancy, Translucent

21.5 x 10.1 mm

$ 42.38

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3.79ctw Red Pyrope Garnet, Square, VS

3.79ctw Red Pyrope Garnet, Square, VS

4 x 4 mm (calibrated)

$ 29.07

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1.94ct Orange Hessonite Garnet, Oval, VS-SI

1.94ct Orange Hessonite Garnet, Oval, VS-SI

8.3 x 6.9 mm

$ 34.25

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3.53ct Green Apatite, Oval, VVS-VS
Apatite Product Video (438939)

3.53ct Green Apatite, Oval, VVS-VS

10.9 x 8.3 mm

$ 181.77

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59.96ctw Multicolor Ruby-Zoisite, Flower Cut, Opaque

59.96ctw Multicolor Ruby-Zoisite, Flower Cut, Opaque

19.2 x 18.8 mm

$ 65.10

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0.80ctw White Rainbow Moonstone, Oval, Transparent

0.80ctw White Rainbow Moonstone, Oval, Transparent

6 x 4 mm (calibrated)

$ 26.30

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0.17ct White Diamond, Round, VVS

0.17ct White Diamond, Round, VVS

3.5 mm (calibrated)

$ 285.42

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0.27ct Yellow Sphalerite, Oval, VS-SI

0.27ct Yellow Sphalerite, Oval, VS-SI

3.9 x 3.3 mm

$ 13.45

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3.48ct Black Star Diopside, Round, Opaque

3.48ct Black Star Diopside, Round, Opaque

8 mm (calibrated)

$ 14.44

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2.29ctw White Cat'S Eye Moonstone, Oval, Transparent

2.29ctw White Cat'S Eye Moonstone, Oval, Transparent

7 x 5 mm (calibrated)

$ 10.04

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0.69ct Orange Fire Opal, Oval, Translucent

0.69ct Orange Fire Opal, Oval, Translucent

8 x 6 mm (calibrated)

$ 18.91

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0.26ct Violet Iolite, Baguette, VS-SI

0.26ct Violet Iolite, Baguette, VS-SI

5 x 3 mm (calibrated)

$ 10.36

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0.67ct Orange Fire Opal, Oval, Transparent
Fire Opal Product Video (585387)

0.67ct Orange Fire Opal, Oval, Transparent

8 x 6 mm (calibrated)

$ 19.08

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8.34ct Multicolor Fire Opal, Trillion, Opaque

8.34ct Multicolor Fire Opal, Trillion, Opaque

15 x 15 mm (calibrated)

$ 41.70

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4.03ct Multicolor Labradorite, Pear Shape, Translucent

4.03ct Multicolor Labradorite, Pear Shape, Translucent

11 x 9 mm (calibrated)

$ 8.91

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9.43ct White Rainbow Moonstone, Pear Shape, Translucent

9.43ct White Rainbow Moonstone, Pear Shape, Translucent

18.9 x 10.1 mm

$ 65.74

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5.65ct Yellow Citrine, Oval, VVS-VS

5.65ct Yellow Citrine, Oval, VVS-VS

14 x 10 mm (calibrated)

$ 33.92

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Why Buy Natural Untreated Gemstones from GemSelect?

Why Choose Untreated Gemstones?

Untreated gemstones are valued for their natural color and clarity without artificial enhancement. Many buyers prefer these gems for authenticity, rarity, and long-term value.

Natural Loose Untreated Gems Online

Shop loose untreated gemstones online at GemSelect with confidence. Browse sapphires, rubies, spinels, aquamarine, garnet, tourmaline, and more with full disclosure.

Natural Untreated Gemstones for Jewelry and Collecting

Untreated Gemstones for Jewelry

Natural untreated gems are excellent for rings, earrings, pendants, and custom jewelry. Their original beauty makes every piece unique and meaningful.

Popular Untreated Gemstone Types

Popular choices include untreated sapphire, ruby, spinel, garnet, tourmaline, zircon, aquamarine, and many collector stones in a wide range of colors.

Certified Natural Gemstones

Many buyers choose untreated gemstones with gemological reports for added confidence. Certification can confirm identity and indicate whether treatments are present.

Collector Quality Untreated Gems

Collectors appreciate untreated gemstones because naturally fine examples are rarer than treated material. These stones can be especially desirable when color and clarity are strong.

Calibrated Untreated Gemstones

We also offer calibrated untreated gemstones in popular sizes suitable for standard jewelry settings, making custom designs easier and faster.

Worldwide Shipping from GemSelect

GemSelect offers secure online ordering, detailed product images, and worldwide delivery so you can shop untreated gemstones from anywhere.

Learn more about gemstone treatments, identification, and care on our Gemstone Information Pages.

FAQs

What does untreated gemstone mean?

An untreated gemstone has not undergone enhancement processes such as heating, dyeing, filling, coating, or diffusion to improve appearance.

Are untreated gemstones more valuable?

Often yes, especially in sapphire, ruby, and other premium gems where fine untreated stones are rarer than treated examples.

How can I verify a gemstone is untreated?

Independent laboratory certification is the best way to verify whether a gemstone is natural and untreated.

Which gemstones are commonly sold untreated?

Spinel, garnet, zircon, tourmaline, aquamarine, and some sapphires or rubies are often available untreated depending on source and quality.

Are all untreated gemstones natural?

Natural untreated gemstones are mined stones that have not been enhanced after cutting. Always buy from trusted sellers with clear disclosure.

GemSelect Certified Store Reviews

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

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