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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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4.60ct Green Jade, Oval, Opaque

4.60ct Green Jade, Oval, Opaque

12 x 10 mm (calibrated)

$ 9.16

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0.48ct Orange Spessartite Garnet, Oval, VS

0.48ct Orange Spessartite Garnet, Oval, VS

5 x 4 mm (calibrated)

$ 16.73

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3.94ctw Red Almandine Garnet, Oval, VVS-VS

3.94ctw Red Almandine Garnet, Oval, VVS-VS

9 x 7 mm (calibrated)

$ 147.16

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4.71ct Yellow Citrine, Briolette, VVS-VS

4.71ct Yellow Citrine, Briolette, VVS-VS

13.7 x 7.9 mm

$ 21.98

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3.10ct Brown Rutile Topaz, Emerald Cut, Transparent

3.10ct Brown Rutile Topaz, Emerald Cut, Transparent

11.1 x 6.3 mm

$ 64.33

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4.72ctw Red Almandine Garnet, Oval, VS

4.72ctw Red Almandine Garnet, Oval, VS

9 x 7 mm (calibrated)

$ 176.29

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20.80ct Pink Coral, Fancy, Opaque
Coral Product Video (333712)

20.80ct Pink Coral, Fancy, Opaque

21.7 x 15 mm

$ 296.25

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2.71ctw Green Peridot, Round, VVS-VS

2.71ctw Green Peridot, Round, VVS-VS

4.5 mm (calibrated)

$ 44.54

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1.03ct Green Tourmaline, Emerald Cut, VVS-VS

1.03ct Green Tourmaline, Emerald Cut, VVS-VS

7.3 x 4.2 mm

$ 51.29

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19.51ct Bi-Color Ametrine, Oval, VVS
Ametrine Product Video (590711)

19.51ct Bi-Color Ametrine, Oval, VVS

18.5 x 14.3 mm

$ 97.16

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7.21ct Multicolor Labradorite, Pear Shape, Translucent

7.21ct Multicolor Labradorite, Pear Shape, Translucent

16 x 12 mm (calibrated)

$ 15.94

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28.62ctw Multicolor Fossil Coral, Oval, Opaque

28.62ctw Multicolor Fossil Coral, Oval, Opaque

21.1 x 13.4 mm

$ 51.11

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52.10ct Multicolor Jasper, Pear Shape, Opaque

52.10ct Multicolor Jasper, Pear Shape, Opaque

35.7 x 31.2 mm

$ 57.08

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19.73ct Violet Amethyst, Emerald Cut, VVS

19.73ct Violet Amethyst, Emerald Cut, VVS

18.3 x 14.3 mm

$ 137.56

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3.33ctw Green Kornerupine, Oval, VVS-VS
Kornerupine Product Video (394270)

3.33ctw Green Kornerupine, Oval, VVS-VS

5.3 x 3.8 mm

$ 109.45

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1.98ct Green Chrysoprase, Oval, Opaque

1.98ct Green Chrysoprase, Oval, Opaque

9 x 7 mm (calibrated)

$ 24.65

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1.27ct Orange Moonstone, Marquise, Translucent

1.27ct Orange Moonstone, Marquise, Translucent

10 x 5 mm (calibrated)

$ 2.53

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2.98ctw Orange Zircon, Emerald Cut, VVS-VS

2.98ctw Orange Zircon, Emerald Cut, VVS-VS

7 x 5 mm (calibrated)

$ 48.97

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3.87ct Multicolor Labradorite, Pear Shape, Translucent

3.87ct Multicolor Labradorite, Pear Shape, Translucent

11 x 9 mm (calibrated)

$ 8.56

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1.69ct Green Sphene, Oval, Transparent

1.69ct Green Sphene, Oval, Transparent

6.8 x 6.2 mm

$ 8.42

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13.55ct Yellow Rutile Quartz, Pear Shape, Transparent

13.55ct Yellow Rutile Quartz, Pear Shape, Transparent

21.3 x 15.6 mm

$ 46.16

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8.00ct White Rainbow Moonstone, Fancy, Transparent

8.00ct White Rainbow Moonstone, Fancy, Transparent

21.2 x 8.7 mm

$ 143.42

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1.31ct Blue Kyanite, Round, VS-SI

1.31ct Blue Kyanite, Round, VS-SI

6 mm (calibrated)

$ 27.27

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7.29ct Pink Kunzite, Oval, VS

7.29ct Pink Kunzite, Oval, VS

13.8 x 8.3 mm

$ 181.52

View Gem
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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!

Overall Rating -> 10 star ratings

The website was very easy to use.

Posted By Garnet in January, 2026
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Overall Rating -> 9 star ratings

Ita's a pretty good and simple way to find gems that youa're looking for amazing selection

Posted By Amman in May, 2026
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Overall Rating -> 10 star ratings

I feel Gemselect is a trustworthy company to buy from

Posted By Becky in October, 2025
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Overall Rating -> 10 star ratings

Love the precise descriptions and calibrations of hte loose gemstones. Would like to have seen more variety in the size gem I was looking for.

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

Very large selection from affordable to high end I will be coming back to shop again!

Posted By GreenGator in August, 2025
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Overall Rating -> 10 star ratings

Easy to use. No issues. Large selection of gems.

Posted By CLTCJH in February, 2026
Source: Bizrate
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