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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
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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0.04ct Black Diamond, Round, Opaque

0.04ct Black Diamond, Round, Opaque

2.1 mm (calibrated)

$ 31.87

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1.13ct Purple Spinel, Oval, VS

1.13ct Purple Spinel, Oval, VS

6 x 5.5 mm

$ 125.06

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2.19ctw Yellow Beryl, Oval, VS

2.19ctw Yellow Beryl, Oval, VS

8 x 6 mm (calibrated)

$ 43.62

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1.28ct Violet Spinel, Cushion, VS-SI

1.28ct Violet Spinel, Cushion, VS-SI

6.5 x 6.3 mm

$ 89.24

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2.19ctw Multicolor Andalusite, Oval, VS

2.19ctw Multicolor Andalusite, Oval, VS

5.1 x 3.1 mm

$ 116.99

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2.98ctw White Topaz, Cushion, VVS-VS

2.98ctw White Topaz, Cushion, VVS-VS

4.6 x 4.6 mm

$ 16.33

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0.06ct White Diamond, Marquise, VVS

0.06ct White Diamond, Marquise, VVS

4.1 x 2.1 mm

$ 208.54

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4.40ctw White Topaz, Cushion, VVS-VS

4.40ctw White Topaz, Cushion, VVS-VS

4.6 x 4.5 mm

$ 24.10

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2.58ct Pink Morganite, Oval, VVS-VS
Morganite Product Video (586313)

2.58ct Pink Morganite, Oval, VVS-VS

10.2 x 7.5 mm

$ 128.48

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1.45ct Yellow Beryl, Oval, VS

1.45ct Yellow Beryl, Oval, VS

9 x 7 mm (calibrated)

$ 28.88

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0.63ct Yellow Morganite, Pear Shape, VS

0.63ct Yellow Morganite, Pear Shape, VS

7.8 x 5.6 mm

$ 27.61

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1.94ct Yellow Beryl, Round, VVS

1.94ct Yellow Beryl, Round, VVS

9 mm (calibrated)

$ 38.64

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0.08ctw Black Diamond, Round, Opaque

0.08ctw Black Diamond, Round, Opaque

2 mm (calibrated)

$ 63.74

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13.93ctw Black Spinel, Heart, Opaque

13.93ctw Black Spinel, Heart, Opaque

12 x 12 mm (calibrated)

$ 76.31

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4.03ct Pink Morganite, Marquise, Translucent

4.03ct Pink Morganite, Marquise, Translucent

16.7 x 7 mm

$ 44.16

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1.45ct Violet Spinel, Cushion, VS

1.45ct Violet Spinel, Cushion, VS

7.1 x 6 mm

$ 103.27

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6.91ctw Black Spinel, Round, Opaque

6.91ctw Black Spinel, Round, Opaque

9 mm (calibrated)

$ 26.49

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0.86ct Pink Morganite, Pear Shape, VVS

0.86ct Pink Morganite, Pear Shape, VVS

9.5 x 5.3 mm

$ 51.83

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8.93ctw Black Spinel, Round, Opaque

8.93ctw Black Spinel, Round, Opaque

10 mm (calibrated)

$ 34.25

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4.40ct Pink Morganite, Round, Transparent

4.40ct Pink Morganite, Round, Transparent

11 mm (calibrated)

$ 47.73

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0.92ct Purple Spinel, Cushion, VS

0.92ct Purple Spinel, Cushion, VS

6.3 x 5.3 mm

$ 137.45

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1.04ct Yellow Morganite, Oval, VS

1.04ct Yellow Morganite, Oval, VS

8 x 6 mm (calibrated)

$ 45.58

View Gem
1.53ct Purple Spinel, Cushion, VS

1.53ct Purple Spinel, Cushion, VS

6.7 x 6.1 mm

$ 109.80

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0.90ct Yellow Beryl, Trillion, VVS

0.90ct Yellow Beryl, Trillion, VVS

7 x 7 mm (calibrated)

$ 17.93

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

I liked the selection of gems, and price. I did not like your PayPal process. I already have a PP account and you want me to sign up for another.

Posted By CLTCJH in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Very large selection from affordable to high end I will be coming back to shop again!

Posted By GreenGator in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I found the filter options excellent. Yours was the third site I visited (asked chat got for reputable online sellers of loose gems) and the first I purchased from as I was able to easily find what I was looking for.

Posted By Kelly in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

love the site, the experience and the products.

Posted By Ckingpots in July, 2025
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

Good. I ts very user friendly.

Posted By Shalini in June, 2025
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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