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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
Pairs
Lots
Faceted
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0.74ct Multicolor Opal, Oval, Translucent

0.74ct Multicolor Opal, Oval, Translucent

8.1 x 6.3 mm

$ 31.69

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19.58ct Multicolor Jasper, Pear Shape, Opaque

19.58ct Multicolor Jasper, Pear Shape, Opaque

35.5 x 14.1 mm

$ 21.46

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7.14ct Pink Morganite, Pear Shape, Transparent

7.14ct Pink Morganite, Pear Shape, Transparent

16.7 x 10 mm

$ 78.23

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24.57ctw Multicolor Fluorite, Oval, Transparent
Fluorite Product Video (744512)

24.57ctw Multicolor Fluorite, Oval, Transparent

23.1 x 12.2 mm

$ 101.97

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19.38ct Brown Tiger'S Eye, Pear Shape, Opaque

19.38ct Brown Tiger'S Eye, Pear Shape, Opaque

25.4 x 15.1 mm

$ 21.23

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1.66ct Yellow Citrine, Emerald Cut, VVS

1.66ct Yellow Citrine, Emerald Cut, VVS

8.1 x 6.3 mm

$ 13.23

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26.48ct Multicolor Agate, Oval, Opaque

26.48ct Multicolor Agate, Oval, Opaque

19 x 18 mm

$ 21.10

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1.03ct Brown Color-Change Garnet, Cushion, VVS-VS

1.03ct Brown Color-Change Garnet, Cushion, VVS-VS

6.2 x 4.8 mm

$ 82.29

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1.81ct Pink Tourmaline, Emerald Cut, VS

1.81ct Pink Tourmaline, Emerald Cut, VS

11.4 x 4.7 mm

$ 130.88

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0.58ct Pink Morganite, Pear Shape, VVS

0.58ct Pink Morganite, Pear Shape, VVS

7.3 x 4.6 mm

$ 31.77

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2.21ct Yellow Citrine, Trillion, VVS-VS

2.21ct Yellow Citrine, Trillion, VVS-VS

9 x 9 mm (calibrated)

$ 16.95

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15.13ct Multicolor Pietersite, Oval, Opaque

15.13ct Multicolor Pietersite, Oval, Opaque

32.1 x 14.7 mm

$ 45.21

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4.75ct Yellow Citrine, Oval, VVS-VS

4.75ct Yellow Citrine, Oval, VVS-VS

12.7 x 9.5 mm

$ 36.44

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4.94ctw Orange Zircon, Round, VVS-VS
Zircon Product Video (481933)

4.94ctw Orange Zircon, Round, VVS-VS

6 mm (calibrated)

$ 117.88

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3.93ctw Violet Amethyst, Oval, VVS-VS

3.93ctw Violet Amethyst, Oval, VVS-VS

6 x 4 mm (calibrated)

$ 21.53

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20.46ct White Howlite, Oval, Opaque

20.46ct White Howlite, Oval, Opaque

25 x 18 mm (calibrated)

$ 9.78

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0.21ct Black Diamond, Round, Opaque

0.21ct Black Diamond, Round, Opaque

3.5 mm (calibrated)

$ 99.90

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31.63ct White Howlite, Fancy, Opaque

31.63ct White Howlite, Fancy, Opaque

27.1 x 21.4 mm

$ 15.75

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2.09ct Red Almandine Garnet, Oval, VVS-VS

2.09ct Red Almandine Garnet, Oval, VVS-VS

9 x 7 mm (calibrated)

$ 78.06

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1.93ct Yellow Beryl, Round, VVS-VS

1.93ct Yellow Beryl, Round, VVS-VS

8 mm (calibrated)

$ 46.13

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7.26ct Brown Star Moonstone, Oval, Translucent

7.26ct Brown Star Moonstone, Oval, Translucent

11.9 x 9.4 mm

$ 31.81

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0.87ct Green Peridot, Oval, VVS-VS

0.87ct Green Peridot, Oval, VVS-VS

6.6 x 4.7 mm

$ 6.07

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1.13ct Red Rhodolite Garnet, Oval, VS-SI

1.13ct Red Rhodolite Garnet, Oval, VS-SI

7 x 5 mm (calibrated)

$ 30.01

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1.44ct Orange Hessonite Garnet, Emerald Cut, VS-SI

1.44ct Orange Hessonite Garnet, Emerald Cut, VS-SI

7 x 5 mm (calibrated)

$ 23.66

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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

I am filling a small treasure chest and picked a nice amethyst.

Posted By VinnyD in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Great! Affordable

Posted By Spinellope in April, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I have a beautiful emerald I purchased from a company names gemselect and they are awesome! You should try them out?

Posted By Lynn in September, 2025
Source: Bizrate

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 -> 10 star ratings

All items were delivered on time with all items meeting or exceeding my expectations. Cut, clarity and color were very close to the photos and description.

Posted By Bob D in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

overall great

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