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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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7.12ct Purple Kunzite, Emerald Cut, VS
Kunzite Product Video (453513)

7.12ct Purple Kunzite, Emerald Cut, VS

18.4 x 7 mm

$ 195.02

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0.66ct Yellow Zircon, Oval, VVS

0.66ct Yellow Zircon, Oval, VVS

6 x 4 mm (calibrated)

$ 16.43

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31.41ct White Agate, Pear Shape, Opaque

31.41ct White Agate, Pear Shape, Opaque

32.3 x 21.2 mm

$ 49.74

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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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2.74ctw Red Pyrope Garnet, Square, VS

2.74ctw Red Pyrope Garnet, Square, VS

4 x 4 mm (calibrated)

$ 21.02

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1.73ct Pink Strawberry Quartz, Round, Translucent

1.73ct Pink Strawberry Quartz, Round, Translucent

8 mm (calibrated)

$ 13.26

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5.64ct Pink Strawberry Quartz, Oval, Translucent

5.64ct Pink Strawberry Quartz, Oval, Translucent

13 x 11 mm (calibrated)

$ 33.98

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3.64ctw White Rainbow Moonstone, Square, Transparent/Translucent

3.64ctw White Rainbow Moonstone, Square, Transparent/Translucent

3 x 3 mm (calibrated)

$ 67.79

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2.18ctw Multicolor Andalusite, Round, VS

2.18ctw Multicolor Andalusite, Round, VS

4 mm (calibrated)

$ 107.48

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26.63ct Violet Lepidolite, Fancy, Opaque

26.63ct Violet Lepidolite, Fancy, Opaque

37.9 x 9.5 mm

$ 2.65

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3.14ct Yellow Citrine, Square, VS

3.14ct Yellow Citrine, Square, VS

9 x 9 mm (calibrated)

$ 24.09

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72.47ct Brown Tiger'S Eye, Square, Opaque

72.47ct Brown Tiger'S Eye, Square, Opaque

25.3 x 25.2 mm

$ 42.11

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19.34ct Violet Amethyst, Cushion, VVS

19.34ct Violet Amethyst, Cushion, VVS

20 x 15 mm (calibrated)

$ 112.37

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8.59ct Violet Amethyst, Fancy, Transparent

8.59ct Violet Amethyst, Fancy, Transparent

13 x 13 mm (calibrated)

$ 42.78

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0.82ct Green Peridot, Oval, VVS-VS

0.82ct Green Peridot, Oval, VVS-VS

7 x 5 mm (calibrated)

$ 11.44

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1.17ct Yellow Beryl, Oval, VS

1.17ct Yellow Beryl, Oval, VS

8 x 6 mm (calibrated)

$ 23.31

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1.33ct White Rainbow Moonstone, Oval, Transparent

1.33ct White Rainbow Moonstone, Oval, Transparent

8 x 6 mm (calibrated)

$ 22.64

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6.96ct Green Amazonite, Pear Shape, Opaque

6.96ct Green Amazonite, Pear Shape, Opaque

19.6 x 12.9 mm

$ 7.07

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13.07ct Green Malachite, Baguette, Opaque

13.07ct Green Malachite, Baguette, Opaque

12 x 10 mm (calibrated)

$ 18.62

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1.05ct Multicolor Opal, Round, Translucent
Opal Product Video (537521)

1.05ct Multicolor Opal, Round, Translucent

7 mm (calibrated)

$ 25.78

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1.18ct Red Rhodolite Garnet, Oval, VS

1.18ct Red Rhodolite Garnet, Oval, VS

7 x 5 mm (calibrated)

$ 25.85

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8.75ct Green Tsavorite Garnet, Cushion, Translucent
Tsavorite Garnet Product Video (524018)

8.75ct Green Tsavorite Garnet, Cushion, Translucent

14.8 x 12.8 mm

$ 191.73

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0.93ct Orange Hessonite Garnet, Cushion, SI

0.93ct Orange Hessonite Garnet, Cushion, SI

5.2 x 5.2 mm

$ 18.33

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0.12ct Violet Iolite, Square, VVS

0.12ct Violet Iolite, Square, VVS

3 x 3 mm (calibrated)

$ 4.78

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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

Fast snd easy to find what I was looking for

Posted By Bawb in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Easy picking, fast checkout, secure shipping. Cana't ask for anything more than efficiency and a good price.

Posted By Beman in September, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I've purchased from here many times over the last decade+. I find the information easy to understand, helpful, and interesting. I have always been satisfied that I got exactly what I ordered. Pictures and descriptions are clear and unique to each stone.

Posted By Maggie in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Found a rock that met my need. Bought it!

Posted By Skot in May, 2026
Source: Bizrate

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 purchased 4 gemstones in different sizes to be able to make a family ring for my granddaughter. I got exactly what I saw and they are absolutely beautiful! Shipping was quick compared to other gem stores I have dealt with! I will definitely order more stones from your company, as I am a collector and have several stones. You are my new go to company in the future

Posted By Liz in June, 2026
Source: Bizrate
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