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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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36.35ct Violet Charoite, Trillion, Opaque

36.35ct Violet Charoite, Trillion, Opaque

30.8 x 20.3 mm

$ 45.26

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15.10ct Blue Color-Change Fluorite, Round, VS
Color-Change Fluorite Product Video (413697)

15.10ct Blue Color-Change Fluorite, Round, VS

15 mm (calibrated)

$ 413.59

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2.33ctw Pink Morganite, Oval, VVS-VS

2.33ctw Pink Morganite, Oval, VVS-VS

6 x 6 mm (calibrated)

$ 127.64

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9.06ct Green Prehnite, Round, Translucent

9.06ct Green Prehnite, Round, Translucent

14 mm (calibrated)

$ 44.67

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22.62ctw Multicolor Pietersite, Oval, Opaque

22.62ctw Multicolor Pietersite, Oval, Opaque

21 x 15.6 mm

$ 90.79

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30.58ct Turquoise Hiddenite, Oval, VVS-VS
Hiddenite Product Video (706629)

30.58ct Turquoise Hiddenite, Oval, VVS-VS

20 x 15 mm (calibrated)

$ 759.00

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0.17ct Yellow Diamond, Round, VS-SI
Diamond Product Video (543913)

0.17ct Yellow Diamond, Round, VS-SI

3.5 mm (calibrated)

$ 306.68

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41.37ct Multicolor Boulder Opal, Oval, Opaque
Boulder Opal Product Video (522985)

41.37ct Multicolor Boulder Opal, Oval, Opaque

30 x 22 mm (calibrated)

$ 226.63

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12.10ct Green Druzy Variscite, Fancy, Opaque

12.10ct Green Druzy Variscite, Fancy, Opaque

35.9 x 14.1 mm

$ 51.34

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23.11ct White Howlite, Round, Opaque

23.11ct White Howlite, Round, Opaque

21.8 mm

$ 10.81

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80.06ct Multicolor Jasper, Pear Shape, Opaque

80.06ct Multicolor Jasper, Pear Shape, Opaque

43.8 x 20.3 mm

$ 49.11

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14.93ct Yellow Apatite, Oval, VS
Apatite Product Video (407385)

14.93ct Yellow Apatite, Oval, VS

16.2 x 13.4 mm

$ 616.67

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66.88ct Multicolor Jasper, Baguette, Opaque
Jasper Product Video (447424)

66.88ct Multicolor Jasper, Baguette, Opaque

31.7 x 25.4 mm

$ 53.29

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3.27ctw Yellow Sillimanite, Oval, VVS-VS
Sillimanite Product Video (411628)

3.27ctw Yellow Sillimanite, Oval, VVS-VS

8 x 6 mm (calibrated)

$ 125.40

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12.19ct Orange Sphalerite, Oval, SI-I1
Sphalerite Product Video (690767)

12.19ct Orange Sphalerite, Oval, SI-I1

14.9 x 11.6 mm

$ 607.06

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20.48ct Multicolor Pietersite, Oval, Opaque
Pietersite Product Video (650671)

20.48ct Multicolor Pietersite, Oval, Opaque

28.2 x 19.6 mm

$ 39.95

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52.74ct Multicolor Jasper, Cushion, Opaque

52.74ct Multicolor Jasper, Cushion, Opaque

36.5 x 25.8 mm

$ 36.77

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1.77ct Brown Color-Change Garnet, Pear Shape, VS-SI
Color-Change Garnet Product Video (344767)

1.77ct Brown Color-Change Garnet, Pear Shape, VS-SI

10.5 x 6 mm

$ 158.66

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2.39ctw Yellow Golden Beryl, Oval, VS

2.39ctw Yellow Golden Beryl, Oval, VS

8 x 6 mm (calibrated)

$ 65.47

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6.59ctw Blue Larimar, Oval, Opaque
Larimar Product Video (596896)

6.59ctw Blue Larimar, Oval, Opaque

11 x 9 mm (calibrated)

$ 65.00

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43.68ct Multicolor Jasper, Oval, Opaque
Jasper Product Video (349030)

43.68ct Multicolor Jasper, Oval, Opaque

34.3 x 24.2 mm

$ 39.88

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0.90ct Yellow Color-Change Diaspore, Emerald Cut, VS

0.90ct Yellow Color-Change Diaspore, Emerald Cut, VS

8.7 x 4.1 mm

$ 39.59

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0.86ct Green Kornerupine, Oval, SI
Kornerupine Product Video (564801)

0.86ct Green Kornerupine, Oval, SI

5.5 x 4.6 mm

$ 295.31

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12.82ct Pink Rose Quartz, Emerald Cut, Transparent
Rose Quartz Product Video (393647)

12.82ct Pink Rose Quartz, Emerald Cut, Transparent

14 x 14 mm (calibrated)

$ 70.23

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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 am filling a small treasure chest and picked a nice amethyst.

Posted By VinnyD in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

The website has a good selection, the interface is very intuitive.

Posted By PhoenixFeatherJewelry in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

The process was pleasant, I chose to purchase the stone traditional to the month of March as it is the month in which I was born.

Posted By Maharishi in June, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Very good

Posted By Niska in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Would have bought an indigo and selenite, but neither listed. But, you do offer quite a large assortment otherwise.

Posted By JD in July, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

Fast and reliable service.

Posted By Zæck in December, 2025
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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