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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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2.18ct Orange Hessonite Garnet, Emerald Cut, VS-SI

2.18ct Orange Hessonite Garnet, Emerald Cut, VS-SI

9.2 x 6.3 mm

$ 40.89

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7.33ct Brown Smoky Quartz, Emerald Cut, VVS-VS

7.33ct Brown Smoky Quartz, Emerald Cut, VVS-VS

12 x 12 mm (calibrated)

$ 12.05

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11.88ct Multicolor Quartz With Marcasite, Oval, Transparent

11.88ct Multicolor Quartz With Marcasite, Oval, Transparent

19.5 x 12.2 mm

$ 78.09

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11.12ct Brown Tiger'S Eye, Flower Cut, Opaque

11.12ct Brown Tiger'S Eye, Flower Cut, Opaque

15.2 x 13.6 mm

$ 14.61

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1.61ct Yellow Citrine, Trillion, Transparent

1.61ct Yellow Citrine, Trillion, Transparent

8 x 8 mm (calibrated)

$ 12.35

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44.28ct Multicolor Psilomelane Dendrite, Baguette, Opaque

44.28ct Multicolor Psilomelane Dendrite, Baguette, Opaque

36.2 x 19 mm

$ 35.72

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3.60ct Yellow Citrine, Oval, VVS

3.60ct Yellow Citrine, Oval, VVS

11 x 9 mm (calibrated)

$ 28.68

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0.30ct Blue Kyanite, Round, SI

0.30ct Blue Kyanite, Round, SI

4 mm (calibrated)

$ 7.47

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4.64ctw Green Prehnite, Oval, Transparent/Translucent

4.64ctw Green Prehnite, Oval, Transparent/Translucent

8.4 x 7.2 mm

$ 35.59

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1.13ct Green Sphene, Round, VS-SI

1.13ct Green Sphene, Round, VS-SI

7 mm (calibrated)

$ 56.75

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0.88ct Orange Zircon, Oval, VVS-VS

0.88ct Orange Zircon, Oval, VVS-VS

5.8 x 4.9 mm

$ 21.91

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0.69ct Orange Zircon, Oval, VVS-VS

0.69ct Orange Zircon, Oval, VVS-VS

6 x 4 mm (calibrated)

$ 17.18

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3.32ctw Orange Moonstone, Oval, Translucent

3.32ctw Orange Moonstone, Oval, Translucent

8 x 6 mm (calibrated)

$ 6.64

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2.18ct Yellow Citrine, Flower Cut, Translucent

2.18ct Yellow Citrine, Flower Cut, Translucent

8.8 x 8.3 mm

$ 16.72

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5.22ct Brown Smoky Quartz, Round, VS

5.22ct Brown Smoky Quartz, Round, VS

12 mm (calibrated)

$ 8.57

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8.10ct Multicolor Boulder Opal, Fancy, Opaque

8.10ct Multicolor Boulder Opal, Fancy, Opaque

21.3 x 12.1 mm

$ 40.34

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1.37ct Orange Hessonite Garnet, Oval, VS

1.37ct Orange Hessonite Garnet, Oval, VS

7.4 x 6.1 mm

$ 25.93

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23.41ct Multicolor Jasper, Fancy, Opaque

23.41ct Multicolor Jasper, Fancy, Opaque

33.7 x 9.7 mm

$ 6.99

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0.72ct Yellow Citrine, Pear Shape, VVS

0.72ct Yellow Citrine, Pear Shape, VVS

7 x 5 mm (calibrated)

$ 3.59

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5.82ct Yellow Citrine, Oval, VVS-VS

5.82ct Yellow Citrine, Oval, VVS-VS

14 x 10 mm (calibrated)

$ 34.94

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0.22ct Pink Morganite, Round, VVS-VS

0.22ct Pink Morganite, Round, VVS-VS

4.2 mm

$ 9.13

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0.52ct Orange Sphalerite, Oval, SI

0.52ct Orange Sphalerite, Oval, SI

4.8 x 4.3 mm

$ 25.90

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1.65ct Pink Tourmaline, Emerald Cut, VVS-VS

1.65ct Pink Tourmaline, Emerald Cut, VVS-VS

10.3 x 4.6 mm

$ 124.74

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20.42ct White Rainbow Moonstone, Oval, Transparent

20.42ct White Rainbow Moonstone, Oval, Transparent

22.3 x 16.9 mm

$ 162.70

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

Had a great experience and the prices are great

Posted By BuBx99 in November, 2025
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Overall Rating -> 9 star ratings

Easy to use. Many options to find the right gemstone

Posted By Liz in May, 2026
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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
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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
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Overall Rating -> 9 star ratings

Very good and simple exchange

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

Very neat and to the point

Posted By Botha in March, 2026
Source: Bizrate
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