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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: 6-7
For Example: 8-9
Bi-color Natural Untreated Gemstones
Black Natural Untreated Gemstones
Blue Natural Untreated Gemstones
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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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1.69ct Orange Sphalerite, Trillion, SI

1.69ct Orange Sphalerite, Trillion, SI

7.3 x 7.1 mm

$ 84.16

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3.03ct Yellow Apatite, Emerald Cut, VS
Apatite Product Video (396085)

3.03ct Yellow Apatite, Emerald Cut, VS

7.7 x 7.6 mm

$ 123.32

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83.59ct Multicolor Ruby-Zoisite, Fancy, Opaque
Ruby-Zoisite Product Video (588862)

83.59ct Multicolor Ruby-Zoisite, Fancy, Opaque

55.2 x 35.7 mm

$ 235.61

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3.50ctw Orange Hessonite Garnet, Square, VS

3.50ctw Orange Hessonite Garnet, Square, VS

6.7 x 6.6 mm

$ 76.69

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6.17ct Yellow Citrine, Oval, VVS-VS

6.17ct Yellow Citrine, Oval, VVS-VS

13 x 11 mm (calibrated)

$ 39.43

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2.19ct Orange Hessonite Garnet, Oval, VS-SI

2.19ct Orange Hessonite Garnet, Oval, VS-SI

9 x 7 mm (calibrated)

$ 65.00

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22.65ct Green Tsavorite Garnet, Trillion, Opaque
Tsavorite Garnet Product Video (521327)

22.65ct Green Tsavorite Garnet, Trillion, Opaque

19 x 19 mm (calibrated)

$ 496.31

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5.00ctw Orange Hessonite Garnet, Emerald Cut, VS
Hessonite Garnet Product Video (391933)

5.00ctw Orange Hessonite Garnet, Emerald Cut, VS

7 x 5 mm (calibrated)

$ 110.00

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9.45ct Turquoise Larimar, Pear Shape, Opaque

9.45ct Turquoise Larimar, Pear Shape, Opaque

16 x 12 mm (calibrated)

$ 103.43

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28.17ct Orange Moonstone, Oval, Opaque

28.17ct Orange Moonstone, Oval, Opaque

22.2 x 16.2 mm

$ 56.12

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1.33ctw Green Demantoid Garnet, Oval, VS
Demantoid Garnet Product Video (458407)

1.33ctw Green Demantoid Garnet, Oval, VS

4.4 x 3.5 mm

$ 121.43

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82.01ct Black Nuummite, Cushion, Opaque
Nuummite Product Video (524807)

82.01ct Black Nuummite, Cushion, Opaque

34.3 x 27.3 mm

$ 295.60

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41.53ct Brown Moonstone, Oval, Opaque
Moonstone Product Video (401031)

41.53ct Brown Moonstone, Oval, Opaque

21.4 x 17.8 mm

$ 68.26

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2.56ct Pink Malaya Garnet, Round, VS

2.56ct Pink Malaya Garnet, Round, VS

8 mm (calibrated)

$ 99.33

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3.45ctw Multicolor Andalusite, Oval, VS-SI

3.45ctw Multicolor Andalusite, Oval, VS-SI

6 x 4 mm (calibrated)

$ 170.10

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5.60ct Green Amazonite, Marquise, Opaque

5.60ct Green Amazonite, Marquise, Opaque

20 x 10 mm (calibrated)

$ 11.20

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10.11ct Yellow Rutile Quartz, Round, Transparent

10.11ct Yellow Rutile Quartz, Round, Transparent

13 mm (calibrated)

$ 35.12

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20.24ct Yellow Quartz Cat'S Eye, Oval, Translucent
Quartz Cat's Eye Product Video (675354)

20.24ct Yellow Quartz Cat'S Eye, Oval, Translucent

15 x 15 mm (calibrated)

$ 412.65

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9.30ct Green Prehnite, Oval, Translucent

9.30ct Green Prehnite, Oval, Translucent

16 x 12 mm (calibrated)

$ 47.89

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3.27ct Pink Tourmaline, Emerald Cut, VS-SI
Tourmaline Product Video (545011)

3.27ct Pink Tourmaline, Emerald Cut, VS-SI

10.7 x 6.2 mm

$ 206.00

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19.00ct Green Maw-Sit-Sit, Round, Opaque

19.00ct Green Maw-Sit-Sit, Round, Opaque

14 mm (calibrated)

$ 44.34

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0.90ct Yellow Color-Change Diaspore, Emerald Cut, VVS-VS

0.90ct Yellow Color-Change Diaspore, Emerald Cut, VVS-VS

7 x 4.4 mm

$ 27.61

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1.15ct Yellow Chrysoberyl, Pear Shape, VVS

1.15ct Yellow Chrysoberyl, Pear Shape, VVS

8.6 x 5.7 mm

$ 134.02

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10.80ct Orange Star Moonstone, Oval, Translucent

10.80ct Orange Star Moonstone, Oval, Translucent

13 x 11 mm (calibrated)

$ 43.03

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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

They have literally everything on this website! The prices are also pretty good, I was able to find plenty of nice stones that I could afford!

Posted By JC in March, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

Fast snd easy to find what I was looking for

Posted By Bawb in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I always purchase my stones from GemSelect, their products are high quality and customer service is always great. I also like the fact that I am able to purchase unique items

Posted By Desperaux in November, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

It was great! Great photos

Posted By Marcia in June, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I love the products. I've bought them as gifts and people love my gifts

Posted By Love it! in February, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Easy picking, fast checkout, secure shipping. Cana't ask for anything more than efficiency and a good price.

Posted By Beman in September, 2025
Source: Bizrate
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