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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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0.99ct Gray Sillimanite Cat'S Eye, Oval, Transparent

0.99ct Gray Sillimanite Cat'S Eye, Oval, Transparent

7.7 x 4.9 mm

$ 3.25

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9.99ct Pink Kunzite, Pear Shape, VS
Kunzite Product Video (453541)

9.99ct Pink Kunzite, Pear Shape, VS

17.5 x 9.6 mm

$ 273.63

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0.15ctw White Diamond, Round, VVS-VS

0.15ctw White Diamond, Round, VVS-VS

2.8 mm (calibrated)

$ 272.54

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35.68ct Black Snowflake Obsidian, Fancy, Opaque

35.68ct Black Snowflake Obsidian, Fancy, Opaque

26.4 x 24.5 mm

$ 20.97

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0.98ct Purple Sapphire, Pear Shape, VS
Sapphire Product Video (447704)

0.98ct Purple Sapphire, Pear Shape, VS

6.6 x 5.3 mm

$ 516.81

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4.61ctw Multicolor Spectrolite, Oval, Opaque

4.61ctw Multicolor Spectrolite, Oval, Opaque

10 x 8 mm (calibrated)

$ 21.07

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8.97ct Blue Tourmaline, Flower Cut, Transparent
Tourmaline Product Video (690459)

8.97ct Blue Tourmaline, Flower Cut, Transparent

20.7 x 15.7 mm

$ 244.32

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14.67ct Pink Rose Quartz, Emerald Cut, Transparent

14.67ct Pink Rose Quartz, Emerald Cut, Transparent

15 x 15 mm (calibrated)

$ 80.37

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17.32ct Brown Smoky Quartz, Fancy, Transparent
Smoky Quartz Product Video (501492)

17.32ct Brown Smoky Quartz, Fancy, Transparent

33.2 x 18.6 mm

$ 28.47

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8.65ct Green Amazonite, Marquise, Opaque

8.65ct Green Amazonite, Marquise, Opaque

18.9 x 10.2 mm

$ 17.29

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28.16ct Green Aventurine, Round, Opaque

28.16ct Green Aventurine, Round, Opaque

20 mm (calibrated)

$ 34.25

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23.50ct Gray Hematite, Heart, Opaque

23.50ct Gray Hematite, Heart, Opaque

20.3 x 19.1 mm

$ 51.49

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8.28ct Blue Hemimorphite Druzy, Fancy, Opaque
Hemimorphite Druzy Product Video (439473)

8.28ct Blue Hemimorphite Druzy, Fancy, Opaque

13 x 13 mm (calibrated)

$ 123.70

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6.82ct Blue Larimar, Round, Opaque

6.82ct Blue Larimar, Round, Opaque

12 mm (calibrated)

$ 70.83

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0.24ctw Black Diamond, Round, Opaque

0.24ctw Black Diamond, Round, Opaque

3 mm (calibrated)

$ 114.17

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11.40ct Pink Rose Quartz, Emerald Cut, Transparent

11.40ct Pink Rose Quartz, Emerald Cut, Transparent

14 x 14 mm (calibrated)

$ 62.45

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42.59ct Multicolor Jasper, Fancy, Opaque

42.59ct Multicolor Jasper, Fancy, Opaque

39.2 x 19.9 mm

$ 46.66

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46.91ct Multicolor Rhodochrosite, Oval, Opaque

46.91ct Multicolor Rhodochrosite, Oval, Opaque

35.1 x 19.2 mm

$ 112.60

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56.50ct Violet Charoite, Oval, Opaque
Charoite Product Video (567268)

56.50ct Violet Charoite, Oval, Opaque

45.2 x 27 mm

$ 105.86

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1.15ct Yellow Chrysoberyl, Pear Shape, VVS

1.15ct Yellow Chrysoberyl, Pear Shape, VVS

8.6 x 5.7 mm

$ 134.02

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1.60ct Orange Hessonite Garnet, Oval, VS

1.60ct Orange Hessonite Garnet, Oval, VS

7.7 x 6.4 mm

$ 31.87

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29.75ct White Howlite, Cushion, Opaque

29.75ct White Howlite, Cushion, Opaque

27.4 x 18.2 mm

$ 14.23

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4.96ct Pink Kunzite, Emerald Cut, VS
Kunzite Product Video (693346)

4.96ct Pink Kunzite, Emerald Cut, VS

10.7 x 6.7 mm

$ 113.74

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19.24ctw Green Aventurine, Fancy, Translucent

19.24ctw Green Aventurine, Fancy, Translucent

21.2 x 10.2 mm

$ 42.16

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 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
Source: Bizrate

Overall Rating -> 9 star ratings

Ita's a pretty good and simple way to find gems that youa're looking for amazing selection

Posted By Amman in May, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

It was great!

Posted By Annie in September, 2025
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 -> 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

It was all good

Posted By Debsarabs in February, 2026
Source: Bizrate
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