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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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19.65ctw Multicolor Fossil Coral, Oval, Opaque

19.65ctw Multicolor Fossil Coral, Oval, Opaque

19 x 11.7 mm

$ 25.41

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0.82ct Yellow Color-Change Diaspore, Fancy, VS

0.82ct Yellow Color-Change Diaspore, Fancy, VS

7.1 x 4.5 mm

$ 28.78

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1.18ct Pink Tourmaline, Emerald Cut, VVS

1.18ct Pink Tourmaline, Emerald Cut, VVS

8.7 x 4.3 mm

$ 81.09

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17.56ct Multicolor Boulder Opal, Fancy, Opaque

17.56ct Multicolor Boulder Opal, Fancy, Opaque

24 x 16.7 mm

$ 87.45

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1.94ct Yellow Citrine, Trillion, VVS-VS

1.94ct Yellow Citrine, Trillion, VVS-VS

9 x 9 mm (calibrated)

$ 14.88

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2.57ct Red Almandine Garnet, Pear Shape, VVS-VS

2.57ct Red Almandine Garnet, Pear Shape, VVS-VS

12 x 8 mm (calibrated)

$ 95.99

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2.52ctw Red Pyrope Garnet, Square, VS

2.52ctw Red Pyrope Garnet, Square, VS

5 x 5 mm (calibrated)

$ 19.32

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1.80ctw Red Pyrope Garnet, Pear Shape, VVS-VS

1.80ctw Red Pyrope Garnet, Pear Shape, VVS-VS

8 x 5 mm (calibrated)

$ 7.89

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26.27ct Pink Kunzite, Pear Shape, Translucent

26.27ct Pink Kunzite, Pear Shape, Translucent

25.7 x 16.8 mm

$ 86.34

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17.03ct Violet Amethyst, Cushion, VVS

17.03ct Violet Amethyst, Cushion, VVS

20 x 15 mm (calibrated)

$ 118.73

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2.93ct Yellow Citrine, Oval, VVS-VS

2.93ct Yellow Citrine, Oval, VVS-VS

11 x 9 mm (calibrated)

$ 22.47

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1.18ct Multicolor Black Opal, Oval, Opaque

1.18ct Multicolor Black Opal, Oval, Opaque

9 x 7 mm (calibrated)

$ 31.03

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4.44ct Yellow Citrine, Oval, VS

4.44ct Yellow Citrine, Oval, VS

13.4 x 10 mm

$ 26.90

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40.30ct Multicolor Rhodochrosite, Sphere / Ball, Opaque

40.30ct Multicolor Rhodochrosite, Sphere / Ball, Opaque

16.1 mm

$ 73.59

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1.64ct Orange Hessonite Garnet, Cushion, SI

1.64ct Orange Hessonite Garnet, Cushion, SI

7 x 7 mm (calibrated)

$ 27.94

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2.20ct Green Tourmaline, Emerald Cut, VS

2.20ct Green Tourmaline, Emerald Cut, VS

22.1 x 3.6 mm

$ 60.26

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0.84ct Yellow Citrine, Marquise, VS

0.84ct Yellow Citrine, Marquise, VS

9.1 x 5 mm

$ 6.69

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1.33ct Orange Sphalerite, Oval, SI

1.33ct Orange Sphalerite, Oval, SI

6.9 x 5.6 mm

$ 66.23

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11.58ct Green Prehnite, Fancy, Translucent

11.58ct Green Prehnite, Fancy, Translucent

16 x 12 mm (calibrated)

$ 20.05

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1.73ct Orange Citrine, Round, VVS

1.73ct Orange Citrine, Round, VVS

8 mm (calibrated)

$ 14.36

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4.24ct Purple Rhodolite Garnet, Oval, VS

4.24ct Purple Rhodolite Garnet, Oval, VS

9.9 x 8.7 mm

$ 175.96

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1.32ct Pink Tourmaline, Round, Transparent

1.32ct Pink Tourmaline, Round, Transparent

7 mm (calibrated)

$ 21.87

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3.07ct Purple Kunzite, Pear Shape, VS
Kunzite Product Video (693499)

3.07ct Purple Kunzite, Pear Shape, VS

9.9 x 7.5 mm

$ 84.48

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29.33ct Multicolor Jasper, Round, Opaque

29.33ct Multicolor Jasper, Round, Opaque

22.9 mm

$ 16.65

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 -> 10 star ratings

On the clarity options it goes "and better" so if youre looking for si specifically and you click si and better it still shows you basically everything. It just removes the opaques. Itd be nice if it was vs only, vss only, si only, etc

Posted By Iamnotakrustykrab in December, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

The purchasing process is fairly quick and straightforward and for me user friendly so it probably took more or less than 3 minutes to purchase and pay for the items. I wish there was a discount offer for multiple items to encourage us buyers to purchase more an incentive and add more sales in your end. Besides that, it's been a great purchasing experience and will continue to shop as I am a repeat customer and have bought from your store many times before. Thank you.

Posted By Emmanuel in October, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Great website, easy to navigate, and loads quickly. Have bought here before, very pleased!

Posted By SallyO in February, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

If you have motion picture, then I will be more satisfied with.

Posted By Ray in November, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

this site is awesome. I was able to look at the products think about purchasing and come back and find the same products. With the amount of inventory gem select has. Its awesome to be able to filter the way that they allow you too.

Posted By Tommyp in November, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

It was great

Posted By Nik in June, 2026
Source: Bizrate
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