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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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38.72ct Bi-Color Tourmaline, Fancy, Transparent
Tourmaline Product Video (521271)

38.72ct Bi-Color Tourmaline, Fancy, Transparent

29.7 x 27.3 mm

$ 321.38

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0.61ct Green Peridot, Marquise, VVS-VS

0.61ct Green Peridot, Marquise, VVS-VS

8 x 4 mm (calibrated)

$ 9.11

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1.48ct Pink Tourmaline, Oval, VVS-VS

1.48ct Pink Tourmaline, Oval, VVS-VS

9.5 x 6.1 mm

$ 176.89

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3.03ct Pink Kunzite, Emerald Cut, VVS-VS

3.03ct Pink Kunzite, Emerald Cut, VVS-VS

9 x 6 mm (calibrated)

$ 83.38

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4.10ct Multicolor Labradorite, Pear Shape, Translucent

4.10ct Multicolor Labradorite, Pear Shape, Translucent

12 x 8 mm (calibrated)

$ 9.06

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2.21ct Red Almandine Garnet, Oval, VS

2.21ct Red Almandine Garnet, Oval, VS

9 x 7 mm (calibrated)

$ 82.54

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30.80ct Multicolor Jasper, Oval, Opaque

30.80ct Multicolor Jasper, Oval, Opaque

26.2 x 16.1 mm

$ 17.49

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2.36ct Orange Hessonite Garnet, Oval, VS-SI

2.36ct Orange Hessonite Garnet, Oval, VS-SI

9 x 7.4 mm

$ 42.31

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13.30ctw Violet Amethyst, Oval, Transparent

13.30ctw Violet Amethyst, Oval, Transparent

14 x 10 mm (calibrated)

$ 60.71

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9.99ct Green Tsavorite Garnet, Pear Shape, Translucent
Tsavorite Garnet Product Video (521330)

9.99ct Green Tsavorite Garnet, Pear Shape, Translucent

17.9 x 13.6 mm

$ 218.90

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18.74ct Brown Moonstone, Oval, Opaque

18.74ct Brown Moonstone, Oval, Opaque

20 x 15 mm (calibrated)

$ 41.07

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4.13ct Yellow Apatite, Oval, VS
Apatite Product Video (438940)

4.13ct Yellow Apatite, Oval, VS

12.2 x 9.4 mm

$ 212.66

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0.84ct Yellow Beryl, Oval, VVS

0.84ct Yellow Beryl, Oval, VVS

8 x 6 mm (calibrated)

$ 16.04

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2.06ctw Red Pyrope Garnet, Marquise, VVS-VS

2.06ctw Red Pyrope Garnet, Marquise, VVS-VS

9.7 x 4.9 mm

$ 18.06

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0.99ct Brown Color-Change Garnet, Round, VS

0.99ct Brown Color-Change Garnet, Round, VS

6 mm (calibrated)

$ 79.09

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0.72ct Multicolor Opal, Pear Shape, Translucent

0.72ct Multicolor Opal, Pear Shape, Translucent

8 x 6 mm (calibrated)

$ 17.99

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1.24ct Pink Morganite, Round, VS

1.24ct Pink Morganite, Round, VS

7.5 mm (calibrated)

$ 67.93

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1.01ct Yellow Chrysoberyl, Oval, VVS
Chrysoberyl Product Video (367378)

1.01ct Yellow Chrysoberyl, Oval, VVS

7 x 5 mm (calibrated)

$ 116.99

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3.59ctw Yellow Citrine, Square, VS

3.59ctw Yellow Citrine, Square, VS

7 x 7 mm (calibrated)

$ 24.94

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3.68ctw Brown Smoky Quartz, Round, VS

3.68ctw Brown Smoky Quartz, Round, VS

8 mm (calibrated)

$ 16.13

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0.52ct Violet Amethyst, Emerald Cut, VS-SI

0.52ct Violet Amethyst, Emerald Cut, VS-SI

6 x 4 mm (calibrated)

$ 3.02

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3.03ctw Orange Sunstone, Oval, Translucent

3.03ctw Orange Sunstone, Oval, Translucent

6.1 x 4.2 mm

$ 23.24

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3.88ct Orange Spessartite Garnet, Oval, Transparent
Spessartite Garnet Product Video (749880)

3.88ct Orange Spessartite Garnet, Oval, Transparent

10 x 8 mm (calibrated)

$ 96.61

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2.34ctw Green Prehnite, Oval, Transparent

2.34ctw Green Prehnite, Oval, Transparent

6.7 x 5.5 mm

$ 12.82

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

No problems. I had a minor address issue in the past and someone got back to me very quickly and we resolved the issue satisfactorily. I appreciated the quick, concerned response. So important when buyer/seller are so far apart in distance. Thank you Gem Select. Keep up the good work!

Posted By Orphanboy in December, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

Easy to use. Many options to find the right gemstone

Posted By Liz in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Ia've been searching for a source to get my gemstones for awhile now and was very happy to come across this website. Amazing variety for any income.

Posted By Tarah in August, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

Very good and simple exchange

Posted By Waylon in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Great selection. Maybe too great i kept adding and deleting stuff because i found better looking ones

Posted By Edsor works in October, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Very neat and to the point

Posted By Botha in March, 2026
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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