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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

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For Example: 8-9
Bi-color Natural Untreated Gemstones
Black Natural Untreated Gemstones
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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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41.83ct Multicolor Tiger'S Eye Matrix, Pear Shape, Opaque

41.83ct Multicolor Tiger'S Eye Matrix, Pear Shape, Opaque

34.8 x 28.5 mm

$ 23.75

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1.52ct Yellow Citrine, Round, VVS-VS

1.52ct Yellow Citrine, Round, VVS-VS

8 mm (calibrated)

$ 12.11

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0.65ct Green Peridot, Marquise, VS

0.65ct Green Peridot, Marquise, VS

8 x 4 mm (calibrated)

$ 10.36

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1.24ct Orange Hessonite Garnet, Cushion, VS-SI

1.24ct Orange Hessonite Garnet, Cushion, VS-SI

6 x 6 mm (calibrated)

$ 20.38

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1.70ct Green Tourmaline, Emerald Cut, VVS

1.70ct Green Tourmaline, Emerald Cut, VVS

18.9 x 3.4 mm

$ 40.98

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1.90ct Orange Hessonite Garnet, Oval, VS-SI

1.90ct Orange Hessonite Garnet, Oval, VS-SI

8.1 x 6.7 mm

$ 34.68

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1.64ctw Orange Spessartite Garnet, Oval, VS

1.64ctw Orange Spessartite Garnet, Oval, VS

5.2 x 4.3 mm

$ 85.69

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2.88ct Yellow Rutile Quartz, Oval, Transparent

2.88ct Yellow Rutile Quartz, Oval, Transparent

11.1 x 7.2 mm

$ 7.76

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5.13ct Brown Smoky Quartz, Round, VVS-VS

5.13ct Brown Smoky Quartz, Round, VVS-VS

12 mm (calibrated)

$ 8.43

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2.97ct Red Almandine Garnet, Pear Shape, VVS

2.97ct Red Almandine Garnet, Pear Shape, VVS

12 x 8 mm (calibrated)

$ 110.93

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0.56ct Pink Tourmaline, Round, Transparent

0.56ct Pink Tourmaline, Round, Transparent

5 mm (calibrated)

$ 22.31

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8.74ct Green Fluorite, Oval, Transparent

8.74ct Green Fluorite, Oval, Transparent

14 x 12 mm (calibrated)

$ 38.30

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1.16ct Yellow Beryl, Round, VS

1.16ct Yellow Beryl, Round, VS

7 mm (calibrated)

$ 25.41

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8.52ct Multicolor Agate, Oval, Opaque

8.52ct Multicolor Agate, Oval, Opaque

14 x 12 mm (calibrated)

$ 14.43

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4.35ct Green Apatite, Emerald Cut, VS

4.35ct Green Apatite, Emerald Cut, VS

8.8 x 8.6 mm

$ 177.05

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2.75ctw Green Peridot, Square, VS

2.75ctw Green Peridot, Square, VS

5 x 5 mm (calibrated)

$ 30.13

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2.98ct Purple Kunzite, Emerald Cut, VVS-VS

2.98ct Purple Kunzite, Emerald Cut, VVS-VS

9.6 x 7.2 mm

$ 74.20

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20.45ctw Multicolor Jasper, Fancy, Opaque

20.45ctw Multicolor Jasper, Fancy, Opaque

20 x 15 mm (calibrated)

$ 12.02

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3.08ct Pink Tourmaline, Emerald Cut, VS-SI
Tourmaline Product Video (544804)

3.08ct Pink Tourmaline, Emerald Cut, VS-SI

9.5 x 6.5 mm

$ 232.83

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3.76ct Yellow Citrine, Oval, VS

3.76ct Yellow Citrine, Oval, VS

13 x 9 mm (calibrated)

$ 28.83

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0.57ct Yellow Color-Change Diaspore, Cushion, VVS

0.57ct Yellow Color-Change Diaspore, Cushion, VVS

5.3 x 5 mm

$ 30.09

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1.11ct Blue Kyanite, Oval, SI

1.11ct Blue Kyanite, Oval, SI

7 x 5 mm (calibrated)

$ 22.11

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1.66ct Orange Hessonite Garnet, Cushion, VS-SI

1.66ct Orange Hessonite Garnet, Cushion, VS-SI

8 x 6 mm (calibrated)

$ 33.07

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0.21ct Pink Morganite, Round, VVS-VS

0.21ct Pink Morganite, Round, VVS-VS

4 mm (calibrated)

$ 8.72

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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

Filters need to be improved but rest of website is great

Posted By Rock hound in December, 2025
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Very good

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Overall Rating -> 10 star ratings

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

Posted By CLTCJH in February, 2026
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Overall Rating -> 10 star ratings

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

Posted By JC Karl in September, 2025
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Overall Rating -> 9 star ratings

I've made several purchases over the last 8 years and I've never been less than happy with any of them.

Posted By Jess in July, 2026
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Overall Rating -> 10 star ratings

Great prices!!! High quality gemstones.

Posted By Ricky in October, 2025
Source: Bizrate
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