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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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0.30ct Orange Sphalerite, Round, SI

0.30ct Orange Sphalerite, Round, SI

3.5 mm (calibrated)

$ 14.94

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5.46ctw Multicolor Labradorite, Pear Shape, Translucent

5.46ctw Multicolor Labradorite, Pear Shape, Translucent

10 x 7 mm (calibrated)

$ 12.07

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1.75ct Green Tourmaline, Oval, Transparent

1.75ct Green Tourmaline, Oval, Transparent

9 x 7 mm (calibrated)

$ 30.00

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6.93ct Pink Kunzite, Cushion, VVS

6.93ct Pink Kunzite, Cushion, VVS

16 x 8.3 mm

$ 189.82

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2.00ct Red Almandine Garnet, Oval, VVS

2.00ct Red Almandine Garnet, Oval, VVS

9 x 7 mm (calibrated)

$ 74.70

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4.80ct Violet Amethyst, Round, VVS

4.80ct Violet Amethyst, Round, VVS

11 mm (calibrated)

$ 31.56

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2.24ctw Yellow Citrine, Pear Shape, VVS-VS

2.24ctw Yellow Citrine, Pear Shape, VVS-VS

9 x 6 mm (calibrated)

$ 14.72

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14.09ct Green Bloodstone, Oval, Opaque
Bloodstone Product Video (408858)

14.09ct Green Bloodstone, Oval, Opaque

15.7 x 12.5 mm

$ 49.12

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32.71ctw Multicolor Coral, Cushion, Opaque
Coral Product Video (566497)

32.71ctw Multicolor Coral, Cushion, Opaque

20 x 15 mm (calibrated)

$ 62.00

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6.14ct Violet Amethyst, Oval, Transparent

6.14ct Violet Amethyst, Oval, Transparent

14 x 10 mm (calibrated)

$ 35.92

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4.68ct Yellow Citrine, Oval, VVS-VS

4.68ct Yellow Citrine, Oval, VVS-VS

14 x 10 mm (calibrated)

$ 28.10

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1.61ct Green Tourmaline, Round, Transparent

1.61ct Green Tourmaline, Round, Transparent

7 mm (calibrated)

$ 26.68

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1.98ct Yellow Citrine, Square, VVS

1.98ct Yellow Citrine, Square, VVS

7.7 x 7.5 mm

$ 11.59

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1.52ct Yellow Golden Beryl, Oval, VS

1.52ct Yellow Golden Beryl, Oval, VS

9 x 7 mm (calibrated)

$ 36.64

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3.15ctw Yellow Golden Beryl, Round, VVS-VS

3.15ctw Yellow Golden Beryl, Round, VVS-VS

8 mm (calibrated)

$ 87.00

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2.61ct Yellow Rutile Quartz, Pear Shape, Transparent

2.61ct Yellow Rutile Quartz, Pear Shape, Transparent

10 x 7 mm (calibrated)

$ 7.03

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4.20ct Violet Amethyst, Pear Shape, VVS

4.20ct Violet Amethyst, Pear Shape, VVS

14 x 10 mm (calibrated)

$ 30.52

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25.50ct Multicolor Ruby-Zoisite, Oval, Opaque

25.50ct Multicolor Ruby-Zoisite, Oval, Opaque

20 x 15 mm (calibrated)

$ 79.63

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1.30ctw Green Demantoid Garnet, Oval, VS

1.30ctw Green Demantoid Garnet, Oval, VS

4.3 x 3.6 mm

$ 142.43

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5.88ct Yellow Apatite, Emerald Cut, VS-SI
Apatite Product Video (395808)

5.88ct Yellow Apatite, Emerald Cut, VS-SI

10 x 10 mm (calibrated)

$ 239.14

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1.66ct Multicolor Opal, Pear Shape, Transparent

1.66ct Multicolor Opal, Pear Shape, Transparent

12.2 x 9 mm

$ 72.75

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5.22ctw Orange Sunstone, Oval, Transparent

5.22ctw Orange Sunstone, Oval, Transparent

10 x 8 mm (calibrated)

$ 40.03

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0.40ct Green Sphene, Round, VS

0.40ct Green Sphene, Round, VS

4.5 mm (calibrated)

$ 14.61

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13.10ct Green Cat'S Eye Aquamarine, Oval, Transparent

13.10ct Green Cat'S Eye Aquamarine, Oval, Transparent

15.2 x 13.1 mm

$ 174.40

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 -> 9 star ratings

Easy to use. Many options to find the right gemstone

Posted By Liz in May, 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

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 place to buy gemstones

Posted By Elansary in March, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

Nothing bad to report. Everything is as expected. The gems and the price are all very good.

Posted By Dafanatic in August, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

I loved the selection of gemstones you have a to z

Posted By James in May, 2026
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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