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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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2.47ctw White Sillimanite Cat'S Eye, Oval, Translucent

2.47ctw White Sillimanite Cat'S Eye, Oval, Translucent

7.3 x 4.9 mm

$ 9.79

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43.25ct Pink Kunzite, Emerald Cut, VS
Kunzite Product Video (758633)

43.25ct Pink Kunzite, Emerald Cut, VS

18 x 18 mm (calibrated)

$ 865.00

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2.93ct Pink Rose Quartz, Flower Cut, Transparent

2.93ct Pink Rose Quartz, Flower Cut, Transparent

13 x 9 mm (calibrated)

$ 7.48

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1.96ct Green Tourmaline, Oval, Transparent

1.96ct Green Tourmaline, Oval, Transparent

8 x 6 mm (calibrated)

$ 33.60

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19.72ct Multicolor Rainbow Pyrite, Fancy, Opaque

19.72ct Multicolor Rainbow Pyrite, Fancy, Opaque

21.6 x 21 mm

$ 51.06

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4.55ct Multicolor Fire Agate, Fancy, Opaque
Fire Agate Product Video (683581)

4.55ct Multicolor Fire Agate, Fancy, Opaque

14.2 x 7.4 mm

$ 34.99

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16.38ct Blue Larimar, Cushion, Opaque
Larimar Product Video (433877)

16.38ct Blue Larimar, Cushion, Opaque

23.9 x 22.6 mm

$ 197.41

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0.76ct Green Chrome Diopside, Oval, VS-SI

0.76ct Green Chrome Diopside, Oval, VS-SI

7 x 5 mm (calibrated)

$ 18.92

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1.12ct Yellow Citrine, Emerald Cut, VS

1.12ct Yellow Citrine, Emerald Cut, VS

8 x 6 mm (calibrated)

$ 7.81

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7.34ctw Multicolor Pietersite, Pear Shape, Opaque

7.34ctw Multicolor Pietersite, Pear Shape, Opaque

17.9 x 12.2 mm

$ 17.18

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4.66ct Yellow Citrine, Oval, VS

4.66ct Yellow Citrine, Oval, VS

12 x 10 mm (calibrated)

$ 35.74

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2.09ct Yellow Golden Beryl, Round, VVS

2.09ct Yellow Golden Beryl, Round, VVS

9 mm (calibrated)

$ 50.38

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11.07ctw Multicolor Labradorite, Marquise, Translucent

11.07ctw Multicolor Labradorite, Marquise, Translucent

16 x 8 mm (calibrated)

$ 24.49

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3.18ct Violet Amethyst, Trillion, VS

3.18ct Violet Amethyst, Trillion, VS

10 x 10 mm (calibrated)

$ 17.42

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3.37ct Pink Kunzite, Emerald Cut, VS

3.37ct Pink Kunzite, Emerald Cut, VS

10 x 6.4 mm

$ 92.74

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1.68ct Yellow Citrine, Emerald Cut, VVS

1.68ct Yellow Citrine, Emerald Cut, VVS

8 x 6 mm (calibrated)

$ 13.39

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0.41ct Yellow Citrine, Marquise, VS

0.41ct Yellow Citrine, Marquise, VS

8 x 4 mm (calibrated)

$ 3.06

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16.29ct Blue Chalcedony, Pear Shape, Opaque

16.29ct Blue Chalcedony, Pear Shape, Opaque

26.1 x 16.6 mm

$ 40.57

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1.70ct Yellow Citrine, Trillion, Transparent

1.70ct Yellow Citrine, Trillion, Transparent

8 x 8 mm (calibrated)

$ 13.04

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19.63ct Pink Kunzite, Cushion, VVS-VS
Kunzite Product Video (695863)

19.63ct Pink Kunzite, Cushion, VVS-VS

15.7 x 14.3 mm

$ 488.79

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5.25ctw Green Prehnite, Oval, Transparent/Translucent

5.25ctw Green Prehnite, Oval, Transparent/Translucent

9.5 x 7.1 mm

$ 28.77

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0.45ct Orange Sphalerite, Round, SI

0.45ct Orange Sphalerite, Round, SI

4.5 mm (calibrated)

$ 22.41

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7.26ct Yellow Apatite, Cushion, VVS-VS
Apatite Product Video (385924)

7.26ct Yellow Apatite, Cushion, VVS-VS

11.9 x 10.4 mm

$ 383.38

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4.18ctw Red Pyrope Garnet, Marquise, VVS-VS

4.18ctw Red Pyrope Garnet, Marquise, VVS-VS

11.9 x 6.1 mm

$ 36.64

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

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

Absolutely love the website, selection and products. Can you guys add a gemstones with inclusions tab. I like those it'd be nice to have them all in one place but i do understand it would be alot of work to go through and categorize them. Thank you anyways

Posted By The homie edgar in December, 2025
Source: Bizrate

Overall Rating -> 7 star ratings

Easy, quick.

Posted By Mich in June, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Enjoy every moment

Posted By Ferns in October, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Had a great experience and the prices are great

Posted By BuBx99 in November, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Good, hope gem quality is good and genuine

Posted By Varun in May, 2026
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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