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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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47.77ct Multicolor Jasper, Fancy, Opaque

47.77ct Multicolor Jasper, Fancy, Opaque

41.7 x 30.1 mm

$ 40.30

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0.88ct Yellow Color-Change Diaspore, Cushion, VS

0.88ct Yellow Color-Change Diaspore, Cushion, VS

6.1 x 5.1 mm

$ 28.93

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0.93ctw Green Peridot, Pear Shape, VVS-VS

0.93ctw Green Peridot, Pear Shape, VVS-VS

6 x 4 mm (calibrated)

$ 7.13

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1.93ct Yellow Beryl, Oval, VS

1.93ct Yellow Beryl, Oval, VS

9.7 x 7.7 mm

$ 36.84

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1.40ct Green Tourmaline, Emerald Cut, VVS-VS

1.40ct Green Tourmaline, Emerald Cut, VVS-VS

18.6 x 3.1 mm

$ 30.76

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11.88ct White Dendritic Agate, Pear Shape, Opaque

11.88ct White Dendritic Agate, Pear Shape, Opaque

19.3 x 16.4 mm

$ 8.28

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1.10ct Green Tourmaline, Baguette, VVS

1.10ct Green Tourmaline, Baguette, VVS

8.8 x 4.1 mm

$ 38.35

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12.37ct Multicolor Labradorite, Pear Shape, Translucent

12.37ct Multicolor Labradorite, Pear Shape, Translucent

18 x 13 mm (calibrated)

$ 27.35

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1.50ct Pink Morganite, Pear Shape, VVS-VS

1.50ct Pink Morganite, Pear Shape, VVS-VS

10 x 5.6 mm

$ 115.04

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45.90ct Pink Rose Quartz, Oval, Transparent

45.90ct Pink Rose Quartz, Oval, Transparent

24 x 21.2 mm

$ 54.86

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79.05ctw Gray Hematite, Pear Shape, Opaque
Hematite Product Video (491761)

79.05ctw Gray Hematite, Pear Shape, Opaque

25 x 18 mm (calibrated)

$ 77.08

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4.58ct White Topaz, Oval, VVS

4.58ct White Topaz, Oval, VVS

12 x 8 mm (calibrated)

$ 30.11

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23.45ct Pink Rose Quartz, Oval, Transparent/Translucent
Rose Quartz Product Video (344924)

23.45ct Pink Rose Quartz, Oval, Transparent/Translucent

18.9 x 15.4 mm

$ 34.69

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2.04ctw White Sillimanite Cat'S Eye, Oval, Translucent

2.04ctw White Sillimanite Cat'S Eye, Oval, Translucent

7.5 x 4.6 mm

$ 8.08

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0.53ct Green Peridot, Emerald Cut, VVS-VS

0.53ct Green Peridot, Emerald Cut, VVS-VS

6 x 4 mm (calibrated)

$ 7.92

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2.44ct Orange Hessonite Garnet, Cushion, VS-SI

2.44ct Orange Hessonite Garnet, Cushion, VS-SI

9 x 7 mm (calibrated)

$ 43.74

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1.58ct Green Tourmaline, Emerald Cut, VS

1.58ct Green Tourmaline, Emerald Cut, VS

9.6 x 4.5 mm

$ 78.68

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5.04ct Yellow Citrine, Oval, VVS-VS

5.04ct Yellow Citrine, Oval, VVS-VS

12 x 10 mm (calibrated)

$ 38.65

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1.82ctw Red Pyrope Garnet, Marquise, VVS-VS

1.82ctw Red Pyrope Garnet, Marquise, VVS-VS

10 x 5 mm

$ 15.95

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37.81ct Red Star Garnet, Oval, Opaque

37.81ct Red Star Garnet, Oval, Opaque

21 x 16.6 mm

$ 37.28

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3.10ct Multicolor Pietersite, Round, Opaque

3.10ct Multicolor Pietersite, Round, Opaque

9 mm (calibrated)

$ 6.25

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0.96ct Blue Kyanite, Oval, VS-SI

0.96ct Blue Kyanite, Oval, VS-SI

7 x 5 mm (calibrated)

$ 21.03

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2.93ctw Red Pyrope Garnet, Square, VVS-VS

2.93ctw Red Pyrope Garnet, Square, VVS-VS

4 x 4 mm (calibrated)

$ 22.47

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26.83ctw Multicolor Fossil Coral, Oval, Opaque

26.83ctw Multicolor Fossil Coral, Oval, Opaque

20.4 x 13.2 mm

$ 28.80

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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Great site for finding specific stones and sizes for individual pieces of jewelry

Posted By Designer in December, 2025
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Overall Rating -> 10 star ratings

Found a rock that met my need. Bought it!

Posted By Skot in May, 2026
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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
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Overall Rating -> 10 star ratings

Very good. I have made several purchases as a collector over the years, and have never been dissapointed in the selection, process, or delivery.

Posted By Schmoove in August, 2026
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