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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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1.48ct Brown Sillimanite Cat'S Eye, Oval, Transparent

1.48ct Brown Sillimanite Cat'S Eye, Oval, Transparent

7 x 5 mm (calibrated)

$ 4.42

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3.61ct Pink Strawberry Quartz, Round, Translucent

3.61ct Pink Strawberry Quartz, Round, Translucent

10 mm (calibrated)

$ 21.76

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27.61ct Black Snowflake Obsidian, Oval, Opaque

27.61ct Black Snowflake Obsidian, Oval, Opaque

35.4 x 19.1 mm

$ 16.23

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4.40ctw Green Prehnite, Round, Transparent

4.40ctw Green Prehnite, Round, Transparent

7.5 mm (calibrated)

$ 19.92

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1.71ctw Red Pyrope Garnet, Pear Shape, VVS-VS

1.71ctw Red Pyrope Garnet, Pear Shape, VVS-VS

7 x 5 mm (calibrated)

$ 13.11

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0.81ct Yellow Color-Change Diaspore, Square, VS

0.81ct Yellow Color-Change Diaspore, Square, VS

5 x 5 mm (calibrated)

$ 28.44

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37.95ct Multicolor Jasper, Fancy, Opaque

37.95ct Multicolor Jasper, Fancy, Opaque

40.8 x 22.5 mm

$ 51.97

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4.94ct Yellow Apatite, Emerald Cut, VS
Apatite Product Video (439317)

4.94ct Yellow Apatite, Emerald Cut, VS

10 x 10 mm (calibrated)

$ 254.38

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18.56ctw Green Amazonite, Marquise, Opaque

18.56ctw Green Amazonite, Marquise, Opaque

20 x 10.2 mm

$ 14.78

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7.08ct Multicolor Ruby In Fuchsite, Marquise, Translucent

7.08ct Multicolor Ruby In Fuchsite, Marquise, Translucent

21.6 x 11.9 mm

$ 52.90

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96.56ct Yellow Rutile Quartz, Pear Shape, Translucent
Rutile Quartz Product Video (449104)

96.56ct Yellow Rutile Quartz, Pear Shape, Translucent

42.4 x 35.3 mm

$ 88.16

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5.07ct Pink Morganite, Oval, Transparent

5.07ct Pink Morganite, Oval, Transparent

13 x 9 mm (calibrated)

$ 55.54

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1.43ctw Yellow Beryl, Oval, VVS-VS

1.43ctw Yellow Beryl, Oval, VVS-VS

7 x 5 mm (calibrated)

$ 27.89

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1.66ctw Red Pyrope Garnet, Heart, VVS-VS

1.66ctw Red Pyrope Garnet, Heart, VVS-VS

6 x 6 mm (calibrated)

$ 12.73

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12.86ct Violet Amethyst, Cushion, VVS-VS

12.86ct Violet Amethyst, Cushion, VVS-VS

15 x 15 mm (calibrated)

$ 89.66

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9.63ctw Green Amazonite, Cushion, Opaque

9.63ctw Green Amazonite, Cushion, Opaque

10 x 10 mm (calibrated)

$ 23.42

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15.75ct Multicolor Jasper, Oval, Opaque

15.75ct Multicolor Jasper, Oval, Opaque

31.7 x 14.2 mm

$ 25.88

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6.04ct White Topaz, Cushion, VS

6.04ct White Topaz, Cushion, VS

12 x 10 mm (calibrated)

$ 40.11

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2.89ct Violet Amethyst, Trillion, VVS-VS

2.89ct Violet Amethyst, Trillion, VVS-VS

10 x 10 mm (calibrated)

$ 18.99

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3.88ct Yellow Citrine, Emerald Cut, VVS-VS

3.88ct Yellow Citrine, Emerald Cut, VVS-VS

12 x 8 mm (calibrated)

$ 34.92

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31.03ctw Multicolor Fossil Coral, Oval, Opaque

31.03ctw Multicolor Fossil Coral, Oval, Opaque

22.3 x 12.6 mm

$ 35.36

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14.38ctw Green Prehnite, Fancy, Transparent

14.38ctw Green Prehnite, Fancy, Transparent

17.1 x 11.8 mm

$ 22.53

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12.74ct Brown Smoky Quartz, Round, Transparent

12.74ct Brown Smoky Quartz, Round, Transparent

16 mm (calibrated)

$ 41.87

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40.40ct Multicolor Lepidolite, Pear Shape, Opaque
Lepidolite Product Video (696114)

40.40ct Multicolor Lepidolite, Pear Shape, Opaque

38.3 x 27.5 mm

$ 20.12

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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

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

Posted By CLTCJH in February, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Great! Affordable

Posted By Spinellope in April, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Very good.

Posted By Tommy in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Love how easy the site is to use. Really love that the pictures are of actual product.

Posted By LeAnn in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Great selection. Maybe too great i kept adding and deleting stuff because i found better looking ones

Posted By Edsor works in October, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Enjoy every moment

Posted By Ferns in October, 2025
Source: Bizrate
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