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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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0.93ct Orange Hessonite Garnet, Cushion, SI

0.93ct Orange Hessonite Garnet, Cushion, SI

5 x 5 mm (calibrated)

$ 18.33

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0.61ct Green Peridot, Pear Shape, VS

0.61ct Green Peridot, Pear Shape, VS

7 x 5 mm (calibrated)

$ 4.25

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3.20ct Multicolor Labradorite, Baguette, Translucent

3.20ct Multicolor Labradorite, Baguette, Translucent

9 x 7 mm (calibrated)

$ 4.40

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0.76ct Yellow Sphene, Oval, Transparent

0.76ct Yellow Sphene, Oval, Transparent

5.9 x 5.3 mm

$ 3.78

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0.93ct Yellow Citrine, Square, VVS-VS

0.93ct Yellow Citrine, Square, VVS-VS

6 x 6 mm (calibrated)

$ 5.40

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39.37ct Black Nuummite, Oval, Opaque

39.37ct Black Nuummite, Oval, Opaque

25.7 x 21.8 mm

$ 164.77

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3.66ct Multicolor Labradorite, Baguette, Translucent

3.66ct Multicolor Labradorite, Baguette, Translucent

9 x 7 mm (calibrated)

$ 5.03

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0.45ctw Blue Kyanite, Round, VS-SI

0.45ctw Blue Kyanite, Round, VS-SI

3.5 mm (calibrated)

$ 8.07

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1.55ct Yellow Citrine, Round, VVS

1.55ct Yellow Citrine, Round, VVS

8 mm (calibrated)

$ 12.35

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4.30ct Green Jade, Oval, Opaque

4.30ct Green Jade, Oval, Opaque

12 x 10 mm (calibrated)

$ 8.57

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1.96ctw Green Demantoid Garnet, Oval, VS

1.96ctw Green Demantoid Garnet, Oval, VS

4.8 x 3.9 mm

$ 214.74

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3.70ct Green Malachite, Oval, Opaque

3.70ct Green Malachite, Oval, Opaque

10.1 x 7.3 mm

$ 2.84

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9.38ct Black Nuummite, Oval, Opaque

9.38ct Black Nuummite, Oval, Opaque

17.3 x 12.3 mm

$ 41.38

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1.35ct Green Tourmaline, Emerald Cut, VVS-VS

1.35ct Green Tourmaline, Emerald Cut, VVS-VS

12.1 x 3.6 mm

$ 35.50

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3.91ctw Red Pyrope Garnet, Square, VVS-VS

3.91ctw Red Pyrope Garnet, Square, VVS-VS

7 x 7 mm (calibrated)

$ 29.99

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0.92ct Orange Sphalerite, Round, I1

0.92ct Orange Sphalerite, Round, I1

5.5 mm (calibrated)

$ 45.82

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2.85ctw Blue Kyanite, Oval, SI

2.85ctw Blue Kyanite, Oval, SI

8 x 6 mm (calibrated)

$ 59.33

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71.34ct Violet Charoite, Oval, Opaque
Charoite Product Video (435150)

71.34ct Violet Charoite, Oval, Opaque

45 x 31.3 mm

$ 117.24

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2.87ct Orange Moonstone, Marquise, Translucent

2.87ct Orange Moonstone, Marquise, Translucent

14 x 7 mm (calibrated)

$ 5.72

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2.27ctw Multicolor Andalusite, Round, VS-SI
Andalusite Product Video (206015)

2.27ctw Multicolor Andalusite, Round, VS-SI

4 mm (calibrated)

$ 111.92

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0.96ct Green Peridot, Oval, VVS-VS

0.96ct Green Peridot, Oval, VVS-VS

7 x 5 mm (calibrated)

$ 6.69

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19.40ct Multicolor Jasper, Oval, Opaque

19.40ct Multicolor Jasper, Oval, Opaque

31.9 x 14.7 mm

$ 21.26

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29.73ct Multicolor Jasper, Pear Shape, Opaque

29.73ct Multicolor Jasper, Pear Shape, Opaque

32.3 x 20.1 mm

$ 25.08

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2.00ct Pink Strawberry Quartz, Round, Translucent

2.00ct Pink Strawberry Quartz, Round, Translucent

8 mm (calibrated)

$ 15.34

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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

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 -> 8 star ratings

It was a good interaction I got a good gemstone for cheap

Posted By Jon in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Very good.

Posted By Tommy in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Absolutely love Gem Select. I always know the quality and accuracy of information and photos are top notch. Highly recommend!

Posted By Matthew K. in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Very large selection from affordable to high end I will be coming back to shop again!

Posted By GreenGator in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

It was good. There was a large selection at prices I could afford.

Posted By Zorah in February, 2026
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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