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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

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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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0.13Ct Black Diamond, Round, Opaque

0.13Ct Black Diamond, Round, Opaque

3 mm (calibrated)

$ 74.51

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3.18Ctw Golden Golden Beryl, Oval, Vvs-Vs

3.18Ctw Golden Golden Beryl, Oval, Vvs-Vs

9 x 7 mm (calibrated)

$ 96.62

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14.12Ctw Black Spinel, Oval, Opaque

14.12Ctw Black Spinel, Oval, Opaque

14 x 10 mm (calibrated)

$ 46.60

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0.52Ct Pale-Greenish Grey Cat's Eye Alexandrite, Oval, Opaque

0.52Ct Pale-Greenish Grey Cat's Eye Alexandrite, Oval, Opaque

5.6 x 4 mm

$ 130.00

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0.09Ctw Black Diamond, Round, Opaque

0.09Ctw Black Diamond, Round, Opaque

2.1 mm (calibrated)

$ 86.40

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1.53Ct Medium Purple Spinel, Cushion, Vvs

1.53Ct Medium Purple Spinel, Cushion, Vvs

6.9 x 6.6 mm

$ 94.52

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7.10Ct Very Light Golden-Brown Rutile Topaz, Pear Shape, Transparent

7.10Ct Very Light Golden-Brown Rutile Topaz, Pear Shape, Transparent

16.9 x 9.5 mm

$ 177.50

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0.22Ctw Golden Brown Diamond, Round, Vvs-Vs
Diamond Product Video (564569)

0.22Ctw Golden Brown Diamond, Round, Vvs-Vs

3.1 mm

$ 483.90

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0.52Ct Very Light Pink Morganite, Round, Vs-Si

0.52Ct Very Light Pink Morganite, Round, Vs-Si

5.5 mm (calibrated)

$ 26.00

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0.89Ct Light Golden Morganite, Pear Shape, Vs

0.89Ct Light Golden Morganite, Pear Shape, Vs

8 x 6 mm (calibrated)

$ 58.74

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2.71Ctw Clear White Topaz, Cushion, Vvs-Vs

2.71Ctw Clear White Topaz, Cushion, Vvs-Vs

4.6 x 4.5 mm

$ 17.89

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0.46Ct Light Pink Morganite, Oval, Vvs-Vs

0.46Ct Light Pink Morganite, Oval, Vvs-Vs

6.9 x 4.1 mm

$ 33.40

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2.76Ctw White Topaz, Cushion, Vvs-Vs

2.76Ctw White Topaz, Cushion, Vvs-Vs

4.6 x 4.5 mm

$ 18.22

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1.22Ct Medium Light-Pink Morganite, Round, Vs

1.22Ct Medium Light-Pink Morganite, Round, Vs

7 mm (calibrated)

$ 57.10

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1.09Ct Warm Yellow Beryl, Trillion, Vvs-Vs

1.09Ct Warm Yellow Beryl, Trillion, Vvs-Vs

8 x 8 mm (calibrated)

$ 26.16

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0.48Ct Medium-Light Pink Morganite, Pear Shape, Vvs-Vs

0.48Ct Medium-Light Pink Morganite, Pear Shape, Vvs-Vs

8 x 3.8 mm

$ 34.85

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0.84Ct Light Golden Morganite, Pear Shape, Vs

0.84Ct Light Golden Morganite, Pear Shape, Vs

8 x 6 mm (calibrated)

$ 44.35

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3.07Ctw Multicolor Andalusite, Round, Vs

3.07Ctw Multicolor Andalusite, Round, Vs

3.3 mm

$ 162.47

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2.69Ct Light Golden-Yellow Beryl, Oval, Vvs

2.69Ct Light Golden-Yellow Beryl, Oval, Vvs

11 x 9 mm (calibrated)

$ 71.02

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3.72Ct Clear White Topaz, Heart, Vvs-Vs

3.72Ct Clear White Topaz, Heart, Vvs-Vs

10 x 10 mm (calibrated)

$ 37.20

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0.18Ctw H Diamond, Round, Si

0.18Ctw H Diamond, Round, Si

2.8 mm (calibrated)

$ 172.80

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0.10Ctw Black Diamond, Round, Opaque

0.10Ctw Black Diamond, Round, Opaque

2.1 mm (calibrated)

$ 96.00

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4.57Ctw Multicolor Andalusite, Round, Vs
Andalusite Product Video (382230)

4.57Ctw Multicolor Andalusite, Round, Vs

3.5 mm (calibrated)

$ 242.08

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0.20Ct L Diamond, Round, Vvs

0.20Ct L Diamond, Round, Vvs

3.5 mm (calibrated)

$ 404.57

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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

This is the first time I have used this site. I was dissatisfied with the quality of gems and supplies elsewhere and decided to try GemSelect. They are awesome! I was thrilled to see the variety and the great web performance. There was the ability to search for information as well as gems. Things like the clarity rating system and caret weight of the gems. I have always loved making things and I have just started to make jewelry as a business. However I have never made a ring before and have always wanted to. On GemSelect I was able to find good quality gems to use in my creations. I am so glad the website is so easy to use. Thank you GemSelect.

Posted By PickyShopper in April, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

It was fine . Wish there had been more round stones to select from

Posted By Emm in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Very good

Posted By Niska in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

GemSelect offers excellent choices, prices & service- highly recommended! Unfortunately, prior to ordering a replacement gemstone, my jeweler neglected to mention it needed to be one that was a'cushion cuta' to fit the existing mount. Have yet to return/exchangea'

Posted By CJ in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Great selection. Maybe too great i kept adding and deleting stuff because i found better looking ones

Posted By Edsor works in October, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

Nothing bad to report. Everything is as expected. The gems and the price are all very good.

Posted By Dafanatic in August, 2025
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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