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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

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For Example: 6-7
For Example: 8-9
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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
Turquoise Natural Untreated Gemstones
Violet Natural Untreated Gemstones
White Natural Untreated Gemstones
Yellow Natural Untreated Gemstones
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0.61Ct Medium Pink Spinel, Cushion, Si-I1
Spinel Product Video (691805)

0.61Ct Medium Pink Spinel, Cushion, Si-I1

4.8 x 4 mm

$ 500.00

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1.06Ct Pinkish Grape Spinel, Pear Shape, Si

1.06Ct Pinkish Grape Spinel, Pear Shape, Si

7.8 x 5.4 mm

$ 136.43

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23.57Ct Light Aqua Blue Aquamarine, Emerald Cut, Vvs
Aquamarine Product Video (486948)

23.57Ct Light Aqua Blue Aquamarine, Emerald Cut, Vvs

30.7 x 9.5 mm

$ 4,242.60

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4.80Ct Light Coral Pink Morganite, Oval, Transparent

4.80Ct Light Coral Pink Morganite, Oval, Transparent

17.4 x 8.7 mm

$ 66.47

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14.30Ctw Black Spinel, Round, Opaque

14.30Ctw Black Spinel, Round, Opaque

12 mm (calibrated)

$ 56.63

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1.84Ct Flamingo Pink Morganite, Round, Vs

1.84Ct Flamingo Pink Morganite, Round, Vs

7.5 mm (calibrated)

$ 170.02

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1.05Ct Greyish Purple Spinel, Baguette, Vs

1.05Ct Greyish Purple Spinel, Baguette, Vs

7.6 x 4.9 mm

$ 45.24

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1.34Ct Light Pink Morganite, Round, Vs

1.34Ct Light Pink Morganite, Round, Vs

7.5 mm (calibrated)

$ 103.18

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23.10Ct Pale Turquoise Cat's Eye Aquamarine, Oval, Translucent
Cat's Eye Aquamarine Product Video (382735)

23.10Ct Pale Turquoise Cat's Eye Aquamarine, Oval, Translucent

19.5 x 15.6 mm

$ 489.08

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1.29Ct Dark Violet Spinel, Cushion, Vvs-Vs

1.29Ct Dark Violet Spinel, Cushion, Vvs-Vs

6.7 x 5.5 mm

$ 102.17

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0.62Ct Light Pink Spinel, Round, Vs

0.62Ct Light Pink Spinel, Round, Vs

5 mm (calibrated)

$ 37.44

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1.41Ct Medium-Dark Purple Sapphire, Cushion, Vs
Sapphire Product Video (448532)

1.41Ct Medium-Dark Purple Sapphire, Cushion, Vs

7.1 x 4.6 mm

$ 897.10

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23.41Ct Light Green Cat's Eye Aquamarine, Oval, Translucent
Cat's Eye Aquamarine Product Video (363233)

23.41Ct Light Green Cat's Eye Aquamarine, Oval, Translucent

17.3 x 14.6 mm

$ 477.56

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0.58Ct Hot Pink Spinel, Oval, Vs
Spinel Product Video (714549)

0.58Ct Hot Pink Spinel, Oval, Vs

4.6 x 4 mm

$ 1,160.00

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0.06Ct Black Diamond, Round, Opaque

0.06Ct Black Diamond, Round, Opaque

2.3 mm (calibrated)

$ 19.21

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2.89Ct Vivid Pink Morganite, Trillion, Transparent

2.89Ct Vivid Pink Morganite, Trillion, Transparent

9 x 9 mm (calibrated)

$ 31.79

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13.46Ctw Black Spinel, Heart, Opaque

13.46Ctw Black Spinel, Heart, Opaque

12 x 12 mm (calibrated)

$ 88.84

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1.56Ctw Multicolor Andalusite, Oval, Vs

1.56Ctw Multicolor Andalusite, Oval, Vs

5.1 x 3.1 mm

$ 100.42

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1.68Ctw Multicolor Andalusite, Oval, Vs

1.68Ctw Multicolor Andalusite, Oval, Vs

5 x 3 mm (calibrated)

$ 108.13

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11.89Ct Light Blue Aquamarine, Baguette, Vvs
Aquamarine Product Video (450372)

11.89Ct Light Blue Aquamarine, Baguette, Vvs

16.8 x 9.9 mm

$ 3,923.70

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0.23Ctw Black Diamond, Square, Opaque

0.23Ctw Black Diamond, Square, Opaque

2.6 x 2.5 mm

$ 138.00

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0.58Ct Clear White Topaz, Square, Vvs-Vs
Topaz Product Video (636248)

0.58Ct Clear White Topaz, Square, Vvs-Vs

4.6 x 4.6 mm

$ 4.05

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3.80Ct Bright Orange Imperial Topaz, Pear Shape, Vvs
Imperial Topaz Product Video (346658)

3.80Ct Bright Orange Imperial Topaz, Pear Shape, Vvs

15.6 x 7.1 mm

$ 2,808.96

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0.53Ctw F Diamond, Heart, Vvs
Diamond Product Video (685658)

0.53Ctw F Diamond, Heart, Vvs

2.9 x 2.6 mm

$ 2,601.61

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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

Filters need to be improved but rest of website is great

Posted By Rock hound in December, 2025
Source: Bizrate

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The website was very easy to use.

Posted By Garnet in January, 2026
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It's mostly good, only some item's are easier to find through the search than the menu

Posted By Wayne in July, 2025
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went well

Posted By Doug in May, 2025
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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
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Overall Rating -> 10 star ratings

I was able to find what I wanted very easily!

Posted By Lenny in January, 2026
Source: Bizrate
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