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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
Pairs
Lots
Faceted
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2.74ct Pink Morganite, Marquise, Translucent

2.74ct Pink Morganite, Marquise, Translucent

13.8 x 6.9 mm

$ 30.02

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1.48ct Purple Spinel, Cushion, VVS-VS
Spinel Product Video (754862)

1.48ct Purple Spinel, Cushion, VVS-VS

7.4 x 6.3 mm

$ 147.41

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33.52ct Green Maw-Sit-Sit, Oval, Opaque
Maw-Sit-Sit Product Video (476871)

33.52ct Green Maw-Sit-Sit, Oval, Opaque

21.4 x 14 mm

$ 110.17

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13.20ctw Black Spinel, Round, Opaque

13.20ctw Black Spinel, Round, Opaque

12 mm (calibrated)

$ 43.38

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0.99ct Yellow Beryl, Oval, VVS-VS

0.99ct Yellow Beryl, Oval, VVS-VS

8 x 6 mm (calibrated)

$ 19.72

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0.53ct Yellow Citrine, Marquise, VVS

0.53ct Yellow Citrine, Marquise, VVS

8 x 4 mm (calibrated)

$ 3.69

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3.37ctw Orange Moonstone, Oval, Translucent

3.37ctw Orange Moonstone, Oval, Translucent

8 x 6 mm (calibrated)

$ 6.74

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2.71ctw Red Pyrope Garnet, Marquise, VVS-VS

2.71ctw Red Pyrope Garnet, Marquise, VVS-VS

10.1 x 5.2 mm

$ 23.75

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1.06ct Yellow Citrine, Square, VVS-VS

1.06ct Yellow Citrine, Square, VVS-VS

6 x 6 mm (calibrated)

$ 7.39

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13.27ct Black Tourmaline, Emerald Cut, Opaque

13.27ct Black Tourmaline, Emerald Cut, Opaque

18.9 x 9.7 mm

$ 66.08

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4.23ctw Red Pyrope Garnet, Square, VS

4.23ctw Red Pyrope Garnet, Square, VS

4 x 4 mm (calibrated)

$ 32.44

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18.19ctw White Jasper, Oval, Opaque

18.19ctw White Jasper, Oval, Opaque

24 x 13.3 mm

$ 25.51

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2.38ctw Multicolor Andalusite, Round, VS-SI

2.38ctw Multicolor Andalusite, Round, VS-SI

4 mm (calibrated)

$ 117.34

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1.87ct Pink Tourmaline, Emerald Cut, VS-SI

1.87ct Pink Tourmaline, Emerald Cut, VS-SI

7.3 x 5.8 mm

$ 135.22

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32.69ct White Dendritic Agate, Fancy, Opaque
Dendritic Agate Product Video (659277)

32.69ct White Dendritic Agate, Fancy, Opaque

28.2 x 21.2 mm

$ 65.12

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2.00ct Pink Tourmaline, Emerald Cut, SI

2.00ct Pink Tourmaline, Emerald Cut, SI

9.4 x 5.7 mm

$ 98.60

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5.64ct Blue Chalcedony, Flower Cut, Translucent

5.64ct Blue Chalcedony, Flower Cut, Translucent

13 x 13 mm (calibrated)

$ 6.18

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4.90ct Yellow Citrine, Oval, VS

4.90ct Yellow Citrine, Oval, VS

12 x 10 mm (calibrated)

$ 26.84

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22.33ctw Multicolor Pietersite, Fancy, Opaque
Pietersite Product Video (633089)

22.33ctw Multicolor Pietersite, Fancy, Opaque

29.6 x 11.5 mm

$ 84.29

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3.27ct Yellow Citrine, Cushion, VVS-VS

3.27ct Yellow Citrine, Cushion, VVS-VS

13.4 x 7.6 mm

$ 25.08

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3.61ct Green Prehnite, Pear Shape, Transparent/Translucent

3.61ct Green Prehnite, Pear Shape, Transparent/Translucent

12.3 x 8.4 mm

$ 7.91

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1.36ct Orange Hessonite Garnet, Emerald Cut, VS

1.36ct Orange Hessonite Garnet, Emerald Cut, VS

6 x 6 mm (calibrated)

$ 26.83

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11.12ct Multicolor Rainbow Pyrite, Trillion, Opaque

11.12ct Multicolor Rainbow Pyrite, Trillion, Opaque

22.2 x 17.4 mm

$ 29.05

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27.97ct Green Aventurine, Fancy, Opaque

27.97ct Green Aventurine, Fancy, Opaque

41.3 x 9 mm

$ 2.32

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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

the selection is good as are the prices

Posted By Old man in August, 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

Overall Rating -> 10 star ratings

I have shopped at Gemselect for nearly 20 years. I especially like that you see pictures of the exact gem you are purchasing. You are a trusted source.

Posted By DNaber in October, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

It was great

Posted By Nik in June, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Recomendado Totalmente Los Productos Se Entregaron A Tiempo

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