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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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1.01ct Purple Rhodolite Garnet, Oval, VS-SI

1.01ct Purple Rhodolite Garnet, Oval, VS-SI

7 x 5 mm (calibrated)

$ 26.83

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4.83ct Pink Kunzite, Cushion, VS

4.83ct Pink Kunzite, Cushion, VS

12.4 x 7.3 mm

$ 127.49

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28.89ct Multicolor Tiger'S Eye Matrix, Oval, Opaque

28.89ct Multicolor Tiger'S Eye Matrix, Oval, Opaque

27.9 x 18.1 mm

$ 28.78

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8.39ct Green Opal, Oval, Opaque

8.39ct Green Opal, Oval, Opaque

17.2 x 12.1 mm

$ 19.46

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4.86ctw Multicolor Labradorite, Marquise, Translucent

4.86ctw Multicolor Labradorite, Marquise, Translucent

12 x 6 mm (calibrated)

$ 10.75

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0.62ct Green Tourmaline, Round, Transparent

0.62ct Green Tourmaline, Round, Transparent

4.7 mm

$ 12.35

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37.17ct Green Malachite, Fancy, Opaque

37.17ct Green Malachite, Fancy, Opaque

21.3 x 15.5 mm

$ 37.02

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0.97ct Green Peridot, Emerald Cut, VS

0.97ct Green Peridot, Emerald Cut, VS

7 x 5 mm (calibrated)

$ 14.49

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3.88ct Yellow Citrine, Oval, VVS-VS

3.88ct Yellow Citrine, Oval, VVS-VS

12.2 x 8.9 mm

$ 29.76

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0.92ct Green Peridot, Pear Shape, VS

0.92ct Green Peridot, Pear Shape, VS

7.5 x 5.8 mm

$ 8.07

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2.33ct Orange Hessonite Garnet, Cushion, VVS-VS

2.33ct Orange Hessonite Garnet, Cushion, VVS-VS

8 x 6 mm (calibrated)

$ 46.41

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10.21ct Multicolor Pietersite, Trillion, Opaque

10.21ct Multicolor Pietersite, Trillion, Opaque

20.5 x 18.3 mm

$ 23.90

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1.57ct Green Tourmaline, Oval, Transparent

1.57ct Green Tourmaline, Oval, Transparent

8.1 x 6.4 mm

$ 28.67

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2.19ct Yellow Citrine, Oval, VVS-VS

2.19ct Yellow Citrine, Oval, VVS-VS

10 x 8 mm (calibrated)

$ 16.79

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1.96ct Purple Rhodolite Garnet, Oval, VVS

1.96ct Purple Rhodolite Garnet, Oval, VVS

8 x 6 mm (calibrated)

$ 78.09

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2.47ct Red Strawberry Quartz, Round, Translucent

2.47ct Red Strawberry Quartz, Round, Translucent

9 mm (calibrated)

$ 37.89

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0.40ct Blue Kyanite, Round, SI

0.40ct Blue Kyanite, Round, SI

4 mm (calibrated)

$ 9.96

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24.84ct Turquoise Amazonite, Oval, Translucent

24.84ct Turquoise Amazonite, Oval, Translucent

29.9 x 16.1 mm

$ 21.77

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4.65ct Purple Kunzite, Cushion, VVS-VS

4.65ct Purple Kunzite, Cushion, VVS-VS

10.8 x 6.9 mm

$ 127.97

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1.16ct Yellow Citrine, Trillion, VS

1.16ct Yellow Citrine, Trillion, VS

7 x 7 mm (calibrated)

$ 6.36

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1.63ctw Red Pyrope Garnet, Heart, VVS-VS

1.63ctw Red Pyrope Garnet, Heart, VVS-VS

6 x 6 mm (calibrated)

$ 10.42

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8.17ct Brown Opal, Oval, Opaque

8.17ct Brown Opal, Oval, Opaque

13.8 x 12.7 mm

$ 40.85

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0.46ct Orange Sphalerite, Round, SI

0.46ct Orange Sphalerite, Round, SI

5 mm (calibrated)

$ 22.91

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10.72ct Turquoise Larimar, Oval, Opaque

10.72ct Turquoise Larimar, Oval, Opaque

18 x 13 mm (calibrated)

$ 138.68

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

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

Wonderful purchase, can't wait to see the stone.

Posted By Tim in January, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

Plan on purchasing on an ongoing basis. So far.....so good....

Posted By Jim in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

It was great

Posted By Nik in June, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Always get a nice gemstone. Just like the picture. Never disappointed

Posted By Ron T in June, 2026
Source: Bizrate

Overall Rating -> 8 star ratings

Good prices

Posted By TRM in October, 2025
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
Enlarged Gemstone Image