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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
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30.17ct Multicolor Rainbow Pyrite, Fancy, Opaque

30.17ct Multicolor Rainbow Pyrite, Fancy, Opaque

37.3 x 20.5 mm

$ 90.15

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1.55ctw White Cat'S Eye Moonstone, Oval, Transparent

1.55ctw White Cat'S Eye Moonstone, Oval, Transparent

7 x 5 mm (calibrated)

$ 3.39

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9.78ct Black Tourmaline, Cushion, Opaque

9.78ct Black Tourmaline, Cushion, Opaque

13.3 x 12.1 mm

$ 48.70

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7.62ctw Green Amazonite, Cushion, Opaque

7.62ctw Green Amazonite, Cushion, Opaque

7 x 7 mm (calibrated)

$ 18.53

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2.47ct Yellow Beryl, Oval, VVS

2.47ct Yellow Beryl, Oval, VVS

11 x 9 mm (calibrated)

$ 59.05

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1.80ct Green Sphene, Oval, Transparent

1.80ct Green Sphene, Oval, Transparent

6.9 x 6.7 mm

$ 8.96

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1.42ct Red Pyrope Garnet, Fancy, VS

1.42ct Red Pyrope Garnet, Fancy, VS

9 x 3.3 mm

$ 17.00

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0.52ct Green Tourmaline, Baguette, VVS

0.52ct Green Tourmaline, Baguette, VVS

12.9 x 2.3 mm

$ 18.13

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7.56ct Yellow Rutile Quartz, Oval, Translucent

7.56ct Yellow Rutile Quartz, Oval, Translucent

15 x 10.9 mm

$ 20.71

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2.15ct Turquoise Larimar, Pear Shape, Opaque

2.15ct Turquoise Larimar, Pear Shape, Opaque

12 x 8 mm (calibrated)

$ 25.32

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2.51ctw Green Peridot, Round, VVS-VS

2.51ctw Green Peridot, Round, VVS-VS

4.5 mm (calibrated)

$ 41.25

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17.18ct Green Druzy Variscite, Pear Shape, Opaque

17.18ct Green Druzy Variscite, Pear Shape, Opaque

26.4 x 21.7 mm

$ 72.90

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9.74ct Multicolor Agate, Oval, Opaque

9.74ct Multicolor Agate, Oval, Opaque

13.9 x 12.8 mm

$ 7.76

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0.25ct Green Tsavorite Garnet, Oval, VVS-VS

0.25ct Green Tsavorite Garnet, Oval, VVS-VS

5 x 3 mm (calibrated)

$ 12.45

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0.70ct Green Sphene, Oval, VS-SI

0.70ct Green Sphene, Oval, VS-SI

6.3 x 4.6 mm

$ 30.68

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1.40ct Multicolor Pietersite, Marquise, Opaque

1.40ct Multicolor Pietersite, Marquise, Opaque

18 x 5 mm

$ 3.39

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2.74ctw Green Peridot, Round, VVS-VS

2.74ctw Green Peridot, Round, VVS-VS

4.7 mm

$ 45.03

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5.79ct Gray Jadeite, Marquise, Translucent

5.79ct Gray Jadeite, Marquise, Translucent

17.9 x 9 mm

$ 25.38

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0.26ct Green Peridot, Marquise, VS
Peridot Product Video (573269)

0.26ct Green Peridot, Marquise, VS

6.1 x 3.1 mm

$ 1.87

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1.59ct Yellow Beryl, Trillion, VS

1.59ct Yellow Beryl, Trillion, VS

8 x 8 mm (calibrated)

$ 38.01

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3.30ct Brown Tiger'S Eye, Oval, Opaque

3.30ct Brown Tiger'S Eye, Oval, Opaque

10.5 x 8.1 mm

$ 3.29

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16.56ct Green Bloodstone, Oval, Opaque

16.56ct Green Bloodstone, Oval, Opaque

20 x 15 mm (calibrated)

$ 24.74

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6.31ct Yellow Cat'S Eye Opal, Oval, Opaque

6.31ct Yellow Cat'S Eye Opal, Oval, Opaque

14 x 10 mm (calibrated)

$ 20.73

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3.49ct Yellow Citrine, Square, VVS-VS

3.49ct Yellow Citrine, Square, VVS-VS

9 x 9 mm (calibrated)

$ 19.12

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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 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
Source: Bizrate

Overall Rating -> 8 star ratings

The website was easy to use and there were a lot of good options, I was satisfied.

Posted By Brielly in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

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.

Posted By Ktreva52 in June, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

this site is awesome. I was able to look at the products think about purchasing and come back and find the same products. With the amount of inventory gem select has. Its awesome to be able to filter the way that they allow you too.

Posted By Tommyp in November, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Great website, easy to navigate, and loads quickly. Have bought here before, very pleased!

Posted By SallyO in February, 2026
Source: Bizrate

Overall Rating -> 7 star ratings

Overall the site is good to use and simple to navigate for what i needed and i liked that they are clear and detailed on the size shape and cut of the stones only input id like is for stones that have a specific refractive quality like moonstone in my case if theyd showcase the cut stones refraction so you know how it looks when buying

Posted By Revenant in August, 2026
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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