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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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26.45ct Violet Amethyst, Emerald Cut, VS

26.45ct Violet Amethyst, Emerald Cut, VS

20.3 x 16.6 mm

$ 151.74

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7.65ct Brown Tiger'S Eye, Baguette, Opaque

7.65ct Brown Tiger'S Eye, Baguette, Opaque

14 x 10 mm (calibrated)

$ 7.62

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0.74ct Green Peridot, Oval, VVS-VS

0.74ct Green Peridot, Oval, VVS-VS

7 x 5 mm (calibrated)

$ 5.16

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4.41ct Pink Rose Quartz, Emerald Cut, Transparent

4.41ct Pink Rose Quartz, Emerald Cut, Transparent

11 x 11 mm (calibrated)

$ 24.16

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22.41ct Multicolor Rainbow Moonstone, Fancy, Opaque

22.41ct Multicolor Rainbow Moonstone, Fancy, Opaque

38.4 x 9 mm

$ 2.23

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0.92ct Red Malaya Garnet, Marquise, VVS-VS

0.92ct Red Malaya Garnet, Marquise, VVS-VS

10 x 4.7 mm

$ 35.28

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1.20ctw Orange Zircon, Oval, VVS-VS

1.20ctw Orange Zircon, Oval, VVS-VS

5 x 4 mm (calibrated)

$ 29.88

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1.75ct Orange Hessonite Garnet, Cushion, VVS-VS

1.75ct Orange Hessonite Garnet, Cushion, VVS-VS

8 x 6 mm (calibrated)

$ 34.86

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4.82ct Violet Amethyst, Oval, Transparent

4.82ct Violet Amethyst, Oval, Transparent

13.2 x 10.3 mm

$ 33.61

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4.11ct Pink Morganite, Oval, Translucent

4.11ct Pink Morganite, Oval, Translucent

11 x 9 mm (calibrated)

$ 45.03

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1.20ct Purple Rhodolite Garnet, Oval, VS

1.20ct Purple Rhodolite Garnet, Oval, VS

7 x 5 mm (calibrated)

$ 31.87

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0.59ct Pink Morganite, Pear Shape, SI

0.59ct Pink Morganite, Pear Shape, SI

7.1 x 5.3 mm

$ 26.44

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2.05ct White Rainbow Moonstone, Oval, Transparent

2.05ct White Rainbow Moonstone, Oval, Transparent

9 x 7 mm (calibrated)

$ 34.89

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1.83ct Violet Amethyst, Marquise, VS

1.83ct Violet Amethyst, Marquise, VS

11.9 x 6 mm

$ 14.04

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1.73ctw Green Peridot, Oval, VS

1.73ctw Green Peridot, Oval, VS

7 x 5 mm (calibrated)

$ 12.06

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0.12ct Green Alexandrite, Oval, VVS-VS

0.12ct Green Alexandrite, Oval, VVS-VS

4 x 3 mm (calibrated)

$ 83.66

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5.94ct Pink Rose Quartz, Emerald Cut, Transparent

5.94ct Pink Rose Quartz, Emerald Cut, Transparent

11 x 11 mm (calibrated)

$ 32.54

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43.57ctw Brown Tiger'S Eye, Fancy, Opaque

43.57ctw Brown Tiger'S Eye, Fancy, Opaque

32.8 x 9.1 mm

$ 23.87

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4.85ct Violet Amethyst, Pear Shape, VVS

4.85ct Violet Amethyst, Pear Shape, VVS

15 x 10 mm (calibrated)

$ 37.20

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1.76ct Pink Strawberry Quartz, Round, Translucent

1.76ct Pink Strawberry Quartz, Round, Translucent

8 mm (calibrated)

$ 13.50

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3.65ct Yellow Citrine, Oval, VS

3.65ct Yellow Citrine, Oval, VS

11 x 9 mm (calibrated)

$ 24.00

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3.15ctw Yellow Sillimanite, Oval, VVS-VS

3.15ctw Yellow Sillimanite, Oval, VVS-VS

8.9 x 6.7 mm

$ 77.90

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0.61ct Pink Spinel, Cushion, VVS-VS

0.61ct Pink Spinel, Cushion, VVS-VS

6.3 x 4.4 mm

$ 50.63

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3.69ct Yellow Citrine, Oval, VVS-VS

3.69ct Yellow Citrine, Oval, VVS-VS

12.9 x 9.4 mm

$ 20.22

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 have a beautiful emerald I purchased from a company names gemselect and they are awesome! You should try them out?

Posted By Lynn in September, 2025
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Enjoy every moment

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Fast snd easy to find what I was looking for

Posted By Bawb in May, 2026
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Overall Rating -> 10 star ratings

I have made many purchases from GemSelect over the years, and I have a beautiful collection of jewelry as a result. My purchases have always been exactly as described, and I have enjoyed doing business with you.

Posted By MMM in July, 2026
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Easy and functional

Posted By Dessa in March, 2026
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Overall Rating -> 10 star ratings

Good selection prices are reasonable!

Posted By ToRa62 in April, 2026
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