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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
Single
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1.00ct Pink Tourmaline, Round, Transparent

1.00ct Pink Tourmaline, Round, Transparent

6 mm (calibrated)

$ 16.58

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1.76ct Green Sphene, Oval, Transparent

1.76ct Green Sphene, Oval, Transparent

7.3 x 6 mm

$ 8.76

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3.46ct Green Apatite, Emerald Cut, VS

3.46ct Green Apatite, Emerald Cut, VS

8.6 x 8.5 mm

$ 178.17

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5.33ct Yellow Citrine, Oval, VVS-VS

5.33ct Yellow Citrine, Oval, VVS-VS

14 x 10 mm (calibrated)

$ 32.00

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1.24ct Orange Hessonite Garnet, Cushion, VS-SI

1.24ct Orange Hessonite Garnet, Cushion, VS-SI

7 x 5 mm (calibrated)

$ 18.43

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3.39ct Yellow Citrine, Pear Shape, VVS-VS

3.39ct Yellow Citrine, Pear Shape, VVS-VS

12 x 10 mm (calibrated)

$ 21.27

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5.11ctw Yellow Citrine, Oval, VVS-VS

5.11ctw Yellow Citrine, Oval, VVS-VS

10 x 8 mm (calibrated)

$ 39.19

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1.40ct Green Tourmaline, Emerald Cut, VVS-VS

1.40ct Green Tourmaline, Emerald Cut, VVS-VS

21.9 x 3 mm

$ 26.63

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1.18ct Pink Strawberry Quartz, Round, Transparent

1.18ct Pink Strawberry Quartz, Round, Transparent

7 mm (calibrated)

$ 10.34

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8.09ct Bi-Color Tourmaline, Fancy, Transparent
Tourmaline Product Video (737845)

8.09ct Bi-Color Tourmaline, Fancy, Transparent

18.2 x 17.7 mm

$ 201.44

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3.12ctw Green Peridot, Round, VVS-VS

3.12ctw Green Peridot, Round, VVS-VS

5 mm (calibrated)

$ 51.28

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1.59ct Green Tourmaline, Baguette, VVS

1.59ct Green Tourmaline, Baguette, VVS

14 x 3.7 mm

$ 55.43

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2.57ct Blue Chalcedony, Oval, Transparent

2.57ct Blue Chalcedony, Oval, Transparent

10 x 8 mm (calibrated)

$ 5.12

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20.96ct Multicolor Lepidolite, Pear Shape, Opaque

20.96ct Multicolor Lepidolite, Pear Shape, Opaque

23.4 x 19.3 mm

$ 10.44

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2.43ct Yellow Citrine, Oval, VVS-VS

2.43ct Yellow Citrine, Oval, VVS-VS

11.4 x 7.9 mm

$ 18.63

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4.40ctw Red Pyrope Garnet, Square, VS

4.40ctw Red Pyrope Garnet, Square, VS

4 x 4 mm (calibrated)

$ 33.75

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4.31ct Pink Morganite, Pear Shape, Transparent

4.31ct Pink Morganite, Pear Shape, Transparent

14 x 10 mm (calibrated)

$ 47.22

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3.77ct Yellow Sphene, Oval, Translucent

3.77ct Yellow Sphene, Oval, Translucent

10 x 8 mm (calibrated)

$ 20.66

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5.13ct Orange Sunstone, Round, Translucent

5.13ct Orange Sunstone, Round, Translucent

11 mm (calibrated)

$ 56.21

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2.45ctw Brown Tiger'S Eye, Oval, Opaque

2.45ctw Brown Tiger'S Eye, Oval, Opaque

8 x 6 mm (calibrated)

$ 2.44

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6.77ct Brown Moonstone, Flower Cut, Translucent

6.77ct Brown Moonstone, Flower Cut, Translucent

14 x 14 mm (calibrated)

$ 24.73

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11.27ct Red Star Garnet, Oval, Opaque

11.27ct Red Star Garnet, Oval, Opaque

15.1 x 10.6 mm

$ 11.67

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1.87ct Orange Zircon, Oval, VVS-VS

1.87ct Orange Zircon, Oval, VVS-VS

8 x 6 mm (calibrated)

$ 30.73

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5.12ct Yellow Citrine, Oval, VVS-VS

5.12ct Yellow Citrine, Oval, VVS-VS

14.7 x 9.4 mm

$ 33.66

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 -> 7 star ratings

Overall the site is good to use and simple to navigate for what i needed and i liked that they are clear and detailed on the size shape and cut of the stones only input id like is for stones that have a specific refractive quality like moonstone in my case if theyd showcase the cut stones refraction so you know how it looks when buying

Posted By Revenant in August, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Very good place to buy gemstones

Posted By Elansary in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

GemSelect offers excellent choices, prices & service- highly recommended! Unfortunately, prior to ordering a replacement gemstone, my jeweler neglected to mention it needed to be one that was a'cushion cuta' to fit the existing mount. Have yet to return/exchangea'

Posted By CJ in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Very good. I have made several purchases as a collector over the years, and have never been dissapointed in the selection, process, or delivery.

Posted By Schmoove in August, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Navigating the site was very easy and the photos of the exact gem you would be purchasing was well done.

Posted By HVeeder in February, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Great! Affordable

Posted By Spinellope in April, 2026
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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