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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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4.55ctw Red Pyrope Garnet, Pear Shape, VS

4.55ctw Red Pyrope Garnet, Pear Shape, VS

7 x 5 mm (calibrated)

$ 34.90

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22.95ctw Multicolor Labradorite, Pear Shape, Translucent

22.95ctw Multicolor Labradorite, Pear Shape, Translucent

22.2 x 16 mm

$ 50.29

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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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16.63ct Yellow Druzy Citrine, Pear Shape, Opaque

16.63ct Yellow Druzy Citrine, Pear Shape, Opaque

18.4 x 15.8 mm

$ 30.88

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0.61ctw Blue Kyanite, Round, VS

0.61ctw Blue Kyanite, Round, VS

3.7 mm

$ 15.19

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1.11ct Green Tourmaline, Emerald Cut, VS

1.11ct Green Tourmaline, Emerald Cut, VS

17.7 x 2.8 mm

$ 29.18

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0.71ct Yellow Citrine, Heart, VVS

0.71ct Yellow Citrine, Heart, VVS

6 x 6 mm (calibrated)

$ 4.95

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3.98ct Violet Amethyst, Oval, Transparent

3.98ct Violet Amethyst, Oval, Transparent

12 x 8 mm (calibrated)

$ 21.80

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3.57ctw Yellow Citrine, Oval, VS

3.57ctw Yellow Citrine, Oval, VS

9.1 x 6.6 mm

$ 27.38

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0.69ct Orange Fire Opal, Oval, Translucent

0.69ct Orange Fire Opal, Oval, Translucent

8 x 6 mm (calibrated)

$ 15.75

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0.66ct Orange Zircon, Oval, VVS-VS

0.66ct Orange Zircon, Oval, VVS-VS

6 x 4 mm (calibrated)

$ 9.86

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1.94ct Pink Strawberry Quartz, Oval, Translucent

1.94ct Pink Strawberry Quartz, Oval, Translucent

9 x 7 mm (calibrated)

$ 14.88

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3.48ct Yellow Citrine, Oval, VS
Citrine Product Video (546646)

3.48ct Yellow Citrine, Oval, VS

11 x 9 mm (calibrated)

$ 20.80

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6.27ct Multicolor Agate, Round, Opaque

6.27ct Multicolor Agate, Round, Opaque

10 mm (calibrated)

$ 5.93

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1.71ct Orange Hessonite Garnet, Oval, VS

1.71ct Orange Hessonite Garnet, Oval, VS

7.8 x 6.5 mm

$ 26.13

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20.31ct Pink Strawberry Quartz, Oval, Translucent
Strawberry Quartz Product Video (472448)

20.31ct Pink Strawberry Quartz, Oval, Translucent

20 x 15 mm (calibrated)

$ 155.77

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8.73ct Multicolor Jasper, Pear Shape, Opaque

8.73ct Multicolor Jasper, Pear Shape, Opaque

16 x 12 mm (calibrated)

$ 6.13

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3.17ctw Green Tourmaline, Round, Transparent

3.17ctw Green Tourmaline, Round, Transparent

7 mm (calibrated)

$ 52.54

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35.35ctw Gray Hematite, Marquise, Opaque

35.35ctw Gray Hematite, Marquise, Opaque

24.8 x 11.6 mm

$ 34.47

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9.66ct Brown Tiger'S Eye, Oval, Opaque

9.66ct Brown Tiger'S Eye, Oval, Opaque

18 x 13 mm (calibrated)

$ 5.68

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10.00ct Green Prehnite, Fancy, Translucent

10.00ct Green Prehnite, Fancy, Translucent

18.2 x 13.7 mm

$ 16.43

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1.37ct Pink Tourmaline, Oval, VS

1.37ct Pink Tourmaline, Oval, VS

7.1 x 6 mm

$ 210.14

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2.18ctw White Rainbow Moonstone, Square, Transparent

2.18ctw White Rainbow Moonstone, Square, Transparent

3 x 3 mm (calibrated)

$ 40.60

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0.57ct Yellow Citrine, Cushion, Transparent

0.57ct Yellow Citrine, Cushion, Transparent

5 x 5 mm (calibrated)

$ 4.26

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

My current project is something BLUE . Opal earrings with matching tennis bracelet for her wedding. The opals and sixty two sapphires VVS & VS are AMAZINGLY BEAUTIFUL. The private jewelers were impressed by the clarity and inclusion free of the sapphires . I want to say thank you for the High quality sapphires that I purchased for my daughtera's wedding.

Posted By My real name Dean or Wandering about in May, 2026
Source: Bizrate

Overall Rating -> 7 star ratings

easy interface for a pricless buy

Posted By Zeak in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

selection was broad and the check out was quick. Great site

Posted By JC Karl in September, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Easy to use. No issues. Large selection of gems.

Posted By CLTCJH in February, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Easy and functional

Posted By Dessa in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

All good

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