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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
Single
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2.02ctw Blue Kyanite, Oval, SI

2.02ctw Blue Kyanite, Oval, SI

7 x 5 mm (calibrated)

$ 35.04

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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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6.84ct Green Actinolite Cat'S Eye, Oval, Translucent
Actinolite Cat's Eye Product Video (486225)

6.84ct Green Actinolite Cat'S Eye, Oval, Translucent

14 x 10 mm (calibrated)

$ 47.69

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1.09ct Green Tsavorite Garnet, Pear Shape, VS-SI
Tsavorite Garnet Product Video (415387)

1.09ct Green Tsavorite Garnet, Pear Shape, VS-SI

7.8 x 5.4 mm

$ 716.52

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10.37ctw Brown Moonstone, Flower Cut, Translucent

10.37ctw Brown Moonstone, Flower Cut, Translucent

12 x 12 mm (calibrated)

$ 45.45

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18.52ct Black Obsidian, Pear Shape, Opaque

18.52ct Black Obsidian, Pear Shape, Opaque

22.5 x 19.4 mm

$ 13.84

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1.54ct Brown Diamond, Round, SI
Diamond Product Video (378644)

1.54ct Brown Diamond, Round, SI

7.5 mm (calibrated)

$ 3,655.65

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21.87ct Multicolor Spectrolite, Oval, Opaque

21.87ct Multicolor Spectrolite, Oval, Opaque

28.3 x 15.6 mm

$ 47.92

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55.96ct Multicolor Jasper, Oval, Opaque

55.96ct Multicolor Jasper, Oval, Opaque

43.2 x 22.6 mm

$ 61.31

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24.94ct Multicolor Rhodochrosite, Pear Shape, Opaque

24.94ct Multicolor Rhodochrosite, Pear Shape, Opaque

34.5 x 13.3 mm

$ 68.32

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3.50ctw Orange Hessonite Garnet, Square, VS

3.50ctw Orange Hessonite Garnet, Square, VS

6.7 x 6.6 mm

$ 76.69

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0.51ct Orange Sphalerite, Oval, SI-I1

0.51ct Orange Sphalerite, Oval, SI-I1

4.9 x 4.2 mm

$ 25.40

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9.61ct Brown Smoky Quartz, Fancy, VVS

9.61ct Brown Smoky Quartz, Fancy, VVS

16.2 x 14 mm

$ 38.74

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30.31ct Green Maw-Sit-Sit, Baguette, Opaque

30.31ct Green Maw-Sit-Sit, Baguette, Opaque

17 x 14.9 mm

$ 99.62

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8.26ctw Violet Amethyst, Oval, Transparent
Amethyst Product Video (392229)

8.26ctw Violet Amethyst, Oval, Transparent

11 x 9 mm (calibrated)

$ 37.71

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5.38ctw Orange Hessonite Garnet, Cushion, VS-SI

5.38ctw Orange Hessonite Garnet, Cushion, VS-SI

9 x 7 mm (calibrated)

$ 89.31

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63.97ct Multicolor Rhodochrosite, Oval, Opaque
Rhodochrosite Product Video (471274)

63.97ct Multicolor Rhodochrosite, Oval, Opaque

39.9 x 25.6 mm

$ 109.33

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50.61ct Blue Larimar, Fancy, Opaque
Larimar Product Video (492449)

50.61ct Blue Larimar, Fancy, Opaque

30.1 x 26 mm

$ 499.06

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11.13ct Yellow Rutile Quartz, Oval, Transparent

11.13ct Yellow Rutile Quartz, Oval, Transparent

21.8 x 12 mm

$ 39.14

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16.89ct Brown Moonstone, Round, Translucent

16.89ct Brown Moonstone, Round, Translucent

17 mm (calibrated)

$ 46.26

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0.88ct Brown Kornerupine, Emerald Cut, VVS-VS

0.88ct Brown Kornerupine, Emerald Cut, VVS-VS

7 x 5 mm (calibrated)

$ 74.97

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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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37.39ct Multicolor Rainbow Pyrite, Heart, Opaque

37.39ct Multicolor Rainbow Pyrite, Heart, Opaque

32.2 x 24.9 mm

$ 96.82

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2.86ctw Blue Kyanite, Oval, VS-SI

2.86ctw Blue Kyanite, Oval, VS-SI

8 x 6 mm (calibrated)

$ 62.67

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!

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