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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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4.76ct Yellow Citrine, Oval, VVS-VS

4.76ct Yellow Citrine, Oval, VVS-VS

14 x 10 mm (calibrated)

$ 31.29

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18.02ct Multicolor Agate, Oval, Opaque

18.02ct Multicolor Agate, Oval, Opaque

17.1 x 16.1 mm

$ 17.94

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18.92ct Violet Amethyst, Cushion, VVS

18.92ct Violet Amethyst, Cushion, VVS

20 x 15 mm (calibrated)

$ 131.91

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7.46ct Turquoise Hemimorphite Druzy, Fancy, Opaque

7.46ct Turquoise Hemimorphite Druzy, Fancy, Opaque

13 x 13 mm (calibrated)

$ 111.45

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1.35ct Pink Tourmaline, Oval, Transparent

1.35ct Pink Tourmaline, Oval, Transparent

7.6 x 5.8 mm

$ 22.37

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11.00ct Brown Star Sunstone, Oval, Opaque

11.00ct Brown Star Sunstone, Oval, Opaque

13 x 13 mm (calibrated)

$ 91.30

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6.11ct Violet Amethyst, Pear Shape, VVS

6.11ct Violet Amethyst, Pear Shape, VVS

15 x 10 mm (calibrated)

$ 46.86

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0.05ct Black Diamond, Round, Opaque

0.05ct Black Diamond, Round, Opaque

2.1 mm (calibrated)

$ 14.53

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1.75ct Orange Hessonite Garnet, Cushion, VS

1.75ct Orange Hessonite Garnet, Cushion, VS

7 x 7 mm (calibrated)

$ 26.08

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27.03ct Multicolor Jasper, Pear Shape, Opaque

27.03ct Multicolor Jasper, Pear Shape, Opaque

23.6 x 17.4 mm

$ 15.35

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3.48ctw Multicolor Labradorite, Round, Translucent

3.48ctw Multicolor Labradorite, Round, Translucent

7 mm (calibrated)

$ 8.46

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2.41ctw White Rainbow Moonstone, Oval, Transparent

2.41ctw White Rainbow Moonstone, Oval, Transparent

6.9 x 6 mm

$ 79.23

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21.29ct Violet Amethyst, Cushion, VVS-VS
Amethyst Product Video (753797)

21.29ct Violet Amethyst, Cushion, VVS-VS

18 x 18 mm (calibrated)

$ 176.71

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2.96ct Red Zircon, Oval, VS
Zircon Product Video (375267)

2.96ct Red Zircon, Oval, VS

8.8 x 6.7 mm

$ 103.19

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0.58ct Green Peridot, Marquise, VVS-VS

0.58ct Green Peridot, Marquise, VVS-VS

8 x 4 mm (calibrated)

$ 8.67

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0.97ct Purple Spinel, Cushion, VVS-VS

0.97ct Purple Spinel, Cushion, VVS-VS

5.8 x 5.8 mm

$ 67.63

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1.32ct Yellow Citrine, Emerald Cut, VVS-VS

1.32ct Yellow Citrine, Emerald Cut, VVS-VS

8 x 6 mm (calibrated)

$ 8.67

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1.06ct Gray Sillimanite Cat'S Eye, Oval, Transparent

1.06ct Gray Sillimanite Cat'S Eye, Oval, Transparent

6.7 x 4.1 mm

$ 3.49

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3.76ctw Yellow Citrine, Round, VVS

3.76ctw Yellow Citrine, Round, VVS

8 mm (calibrated)

$ 29.96

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30.43ct Yellow Jadeite, Fancy, Translucent

30.43ct Yellow Jadeite, Fancy, Translucent

38.8 x 15.9 mm

$ 25.00

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7.46ct Brown Smoky Quartz, Round, VS

7.46ct Brown Smoky Quartz, Round, VS

13 mm (calibrated)

$ 12.26

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1.30ct Pink Morganite, Oval, VS

1.30ct Pink Morganite, Oval, VS

8.7 x 6.6 mm

$ 99.70

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1.22ctw Red Pyrope Garnet, Heart, VS

1.22ctw Red Pyrope Garnet, Heart, VS

5 x 5 mm (calibrated)

$ 30.38

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21.45ctw Black Spinel, Fancy, Opaque

21.45ctw Black Spinel, Fancy, Opaque

18.2 x 12 mm

$ 117.51

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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

Very food

Posted By Keeto in July, 2025
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Overall Rating -> 10 star ratings

the selection is good as are the prices

Posted By Old man in August, 2025
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Overall Rating -> 10 star ratings

I love the ability to choose from many options of shapes, gemstone type, color, and so forth. It is fun!

Posted By Geof in November, 2025
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Overall Rating -> 10 star ratings

Web site is very simple to navigate Selection is terrific

Posted By ToRa.62 in April, 2026
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

They have a wonderful selection of gems of all sorts, shapes, cuts, and quality. I am very particular about the quality of stones I buy, and found many with VVS clarity and excellent cut and polish. I am thrilled with each of the stones I purchased, and would definitely recommend GemSelect to everyone.

Posted By Debsarabs in February, 2026
Source: Bizrate
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