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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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26.87ct Multicolor Pietersite, Round, Opaque
Pietersite Product Video (650670)

26.87ct Multicolor Pietersite, Round, Opaque

28.4 mm

$ 62.89

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1.09ctw Red Pyrope Garnet, Heart, VS

1.09ctw Red Pyrope Garnet, Heart, VS

5 x 5 mm (calibrated)

$ 28.67

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0.46ct Yellow Citrine, Cushion, VS

0.46ct Yellow Citrine, Cushion, VS

5 x 5 mm (calibrated)

$ 3.44

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0.96ct Violet Amethyst, Marquise, VVS-VS

0.96ct Violet Amethyst, Marquise, VVS-VS

10 x 5 mm (calibrated)

$ 6.37

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2.36ctw White Sillimanite Cat'S Eye, Oval, Transparent

2.36ctw White Sillimanite Cat'S Eye, Oval, Transparent

7.3 x 5.5 mm

$ 7.76

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3.46ctw Multicolor Opal, Square, Translucent

3.46ctw Multicolor Opal, Square, Translucent

4.1 x 3.7 mm

$ 24.56

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2.90ctw Violet Amethyst, Heart, VVS-VS

2.90ctw Violet Amethyst, Heart, VVS-VS

6 x 6 mm (calibrated)

$ 22.24

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6.76ctw Violet Amethyst, Oval, Transparent

6.76ctw Violet Amethyst, Oval, Transparent

11 x 9 mm (calibrated)

$ 26.73

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50.64ct Multicolor Jasper, Oval, Opaque

50.64ct Multicolor Jasper, Oval, Opaque

38.6 x 22.2 mm

$ 25.86

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1.40ct Orange Hessonite Garnet, Emerald Cut, VS

1.40ct Orange Hessonite Garnet, Emerald Cut, VS

7 x 5 mm (calibrated)

$ 27.89

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5.92ct Pink Kunzite, Cushion, VS
Kunzite Product Video (693885)

5.92ct Pink Kunzite, Cushion, VS

13.1 x 8 mm

$ 162.91

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1.47ctw Red Rhodolite Garnet, Square, VS

1.47ctw Red Rhodolite Garnet, Square, VS

5 x 5 mm (calibrated)

$ 12.88

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18.82ct Black Nuummite, Oval, Opaque

18.82ct Black Nuummite, Oval, Opaque

24 x 14.7 mm

$ 77.23

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8.56ctw Multicolor Pietersite, Oval, Opaque

8.56ctw Multicolor Pietersite, Oval, Opaque

15.1 x 11.1 mm

$ 20.04

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1.40ct Green Tourmaline, Emerald Cut, VVS-VS

1.40ct Green Tourmaline, Emerald Cut, VVS-VS

19.6 x 2.8 mm

$ 33.75

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3.03ct Violet Amethyst, Heart, VS

3.03ct Violet Amethyst, Heart, VS

10 x 10 mm (calibrated)

$ 23.24

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3.31ct Turquoise Grandidierite, Oval, Translucent
Grandidierite Product Video (471845)

3.31ct Turquoise Grandidierite, Oval, Translucent

9.8 x 8.5 mm

$ 725.29

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68.06ct Multicolor Pietersite, Oval, Opaque
Pietersite Product Video (333825)

68.06ct Multicolor Pietersite, Oval, Opaque

47 x 29.4 mm

$ 271.15

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2.10ctw Green Sphene, Oval, Transparent

2.10ctw Green Sphene, Oval, Transparent

6.3 x 5.6 mm

$ 10.46

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1.74ct Green Tourmaline, Oval, VVS

1.74ct Green Tourmaline, Oval, VVS

9 x 7 mm (calibrated)

$ 202.19

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4.05ctw Multicolor Andalusite, Round, VS
Andalusite Product Video (382328)

4.05ctw Multicolor Andalusite, Round, VS

3.3 mm

$ 178.07

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0.26ct Yellow Spessartite Garnet, Oval, VS

0.26ct Yellow Spessartite Garnet, Oval, VS

4.1 x 3.1 mm

$ 9.06

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4.67ctw White Topaz, Square, VS

4.67ctw White Topaz, Square, VS

4 x 4 mm (calibrated)

$ 35.81

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2.55ct Yellow Citrine, Oval, VVS-VS

2.55ct Yellow Citrine, Oval, VVS-VS

12 x 8 mm (calibrated)

$ 19.56

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

I purchased 4 gemstones in different sizes to be able to make a family ring for my granddaughter. I got exactly what I saw and they are absolutely beautiful! Shipping was quick compared to other gem stores I have dealt with! I will definitely order more stones from your company, as I am a collector and have several stones. You are my new go to company in the future

Posted By Liz in June, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Easy to use website

Posted By Mel in February, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Very neat and to the point

Posted By Botha in March, 2026
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Overall Rating -> 10 star ratings

I have a beautiful emerald I purchased from a company names gemselect and they are awesome! You should try them out?

Posted By Lynn in September, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Recomendado Totalmente Los Productos Se Entregaron A Tiempo

Posted By Alexis in May, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

Easy to use. Many options to find the right gemstone

Posted By Liz in May, 2026
Source: Bizrate
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