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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
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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
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Violet Natural Untreated Gemstones
White Natural Untreated Gemstones
Yellow Natural Untreated Gemstones
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0.17ct Yellow Diamond, Round, VS
Diamond Product Video (543902)

0.17ct Yellow Diamond, Round, VS

3.5 mm (calibrated)

$ 306.68

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11.29ctw Pink Morganite, Oval, Translucent

11.29ctw Pink Morganite, Oval, Translucent

15 x 9.1 mm

$ 123.69

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1.70ct Brown Diamond, Round, SI
Diamond Product Video (382092)

1.70ct Brown Diamond, Round, SI

7.5 mm (calibrated)

$ 3,970.74

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1.81ct Brown Diamond, Emerald Cut, SI
Diamond Product Video (382053)

1.81ct Brown Diamond, Emerald Cut, SI

6.4 x 6.1 mm

$ 3,843.32

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1.69ctw Multicolor Andalusite, Oval, VS

1.69ctw Multicolor Andalusite, Oval, VS

5 x 3 mm (calibrated)

$ 90.28

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2.76ct Yellow Golden Beryl, Oval, VVS-VS

2.76ct Yellow Golden Beryl, Oval, VVS-VS

10 x 8 mm (calibrated)

$ 75.60

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1.21ct Purple Sapphire, Pear Shape, VS
Sapphire Product Video (448580)

1.21ct Purple Sapphire, Pear Shape, VS

7.4 x 5.4 mm

$ 532.48

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1.46ct Purple Spinel, Cushion, VS

1.46ct Purple Spinel, Cushion, VS

6.8 x 6.4 mm

$ 107.50

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1.32ct Brown Diamond, Pear Shape, SI
Diamond Product Video (382046)

1.32ct Brown Diamond, Pear Shape, SI

8.3 x 5.4 mm

$ 2,569.29

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2.85ct Yellow Golden Beryl, Round, VVS

2.85ct Yellow Golden Beryl, Round, VVS

10 mm (calibrated)

$ 62.45

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2.39ctw Yellow Golden Beryl, Oval, VS

2.39ctw Yellow Golden Beryl, Oval, VS

8 x 6 mm (calibrated)

$ 65.47

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1.27ct Yellow Chrysoberyl, Pear Shape, VVS

1.27ct Yellow Chrysoberyl, Pear Shape, VVS

8.5 x 6 mm

$ 148.01

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2.33ctw Pink Morganite, Oval, VVS-VS

2.33ctw Pink Morganite, Oval, VVS-VS

6 x 6 mm (calibrated)

$ 127.64

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0.16ctw White Diamond, Round, VVS-VS

0.16ctw White Diamond, Round, VVS-VS

2.8 mm (calibrated)

$ 242.24

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1.06ct Purple Sapphire, Pear Shape, VS
Sapphire Product Video (447772)

1.06ct Purple Sapphire, Pear Shape, VS

8.2 x 5.6 mm

$ 559.00

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4.17ct White Morganite, Oval, Transparent

4.17ct White Morganite, Oval, Transparent

14.3 x 10.4 mm

$ 47.92

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1.63ct Pink Morganite, Round, VS

1.63ct Pink Morganite, Round, VS

7.5 mm (calibrated)

$ 125.01

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0.31ct Brown Diamond, Round, VS
Diamond Product Video (564603)

0.31ct Brown Diamond, Round, VS

4.5 mm (calibrated)

$ 514.48

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2.14ctw Multicolor Andalusite, Oval, VS

2.14ctw Multicolor Andalusite, Oval, VS

6 x 4 mm (calibrated)

$ 114.74

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1.06ct Purple Spinel, Pear Shape, VVS

1.06ct Purple Spinel, Pear Shape, VVS

8.9 x 5.4 mm

$ 175.96

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1.50ct Purple Spinel, Cushion, VS

1.50ct Purple Spinel, Cushion, VS

7.1 x 6 mm

$ 138.88

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1.08ct Orange Morganite, Oval, VVS-VS

1.08ct Orange Morganite, Oval, VVS-VS

8 x 6 mm (calibrated)

$ 54.23

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2.02ct Red Ruby, Cushion, SI
Ruby Product Video (569416)

2.02ct Red Ruby, Cushion, SI

7 x 7 mm (calibrated)

$ 7,507.62

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1.20ct Yellow Chrysoberyl, Oval, VVS-VS
Chrysoberyl Product Video (366388)

1.20ct Yellow Chrysoberyl, Oval, VVS-VS

8 x 6 mm (calibrated)

$ 139.93

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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 have been very happy with my prior purchases and enjoy the website experience.

Posted By Trouble in November, 2025
Source: Bizrate

Overall Rating -> 7 star ratings

Easy, quick.

Posted By Mich in June, 2026
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Overall Rating -> 10 star ratings

Love how easy the site is to use. Really love that the pictures are of actual product.

Posted By LeAnn in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Navigating the site was very easy and the photos of the exact gem you would be purchasing was well done.

Posted By HVeeder in February, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I was looking for high-quality amethyst on this site, and I was able to compare size, color, and weight in detail before making a purchase.

Posted By Atsuhisa in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Found a rock that met my need. Bought it!

Posted By Skot in May, 2026
Source: Bizrate
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