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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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1.42ct Purple Sapphire, Cushion, VS
Sapphire Product Video (447717)

1.42ct Purple Sapphire, Cushion, VS

6.9 x 5.5 mm

$ 748.84

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1.35ctw Yellow Citrine, Heart, VVS-VS

1.35ctw Yellow Citrine, Heart, VVS-VS

6 x 6 mm (calibrated)

$ 9.41

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1.25ct Yellow Sphene, Oval, Transparent

1.25ct Yellow Sphene, Oval, Transparent

6.7 x 6.1 mm

$ 6.23

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29.77ctw Multicolor Fossil Coral, Cushion, Opaque

29.77ctw Multicolor Fossil Coral, Cushion, Opaque

20.8 x 13.7 mm

$ 32.62

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7.96ct Multicolor Coral, Oval, Opaque

7.96ct Multicolor Coral, Oval, Opaque

19 x 13.5 mm

$ 17.44

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2.27ctw Red Pyrope Garnet, Square, VS

2.27ctw Red Pyrope Garnet, Square, VS

4.8 x 4.8 mm

$ 17.41

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9.89ct Multicolor Agate, Oval, Opaque

9.89ct Multicolor Agate, Oval, Opaque

14 x 12 mm (calibrated)

$ 9.85

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1.97ct Multicolor Opal, Oval, Opaque

1.97ct Multicolor Opal, Oval, Opaque

10 x 8 mm (calibrated)

$ 86.34

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1.93ct Multicolor Opal, Oval, Transparent
Opal Product Video (697569)

1.93ct Multicolor Opal, Oval, Transparent

11 x 8.1 mm

$ 48.54

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0.67ct Yellow Citrine, Pear Shape, VVS-VS

0.67ct Yellow Citrine, Pear Shape, VVS-VS

7 x 5 mm (calibrated)

$ 3.34

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20.38ct Green Malachite, Baguette, Opaque

20.38ct Green Malachite, Baguette, Opaque

14 x 12 mm (calibrated)

$ 24.34

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1.49ctw Red Rhodolite Garnet, Square, VS

1.49ctw Red Rhodolite Garnet, Square, VS

5 x 5 mm (calibrated)

$ 13.05

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3.49ct White Moonstone, Oval, Translucent

3.49ct White Moonstone, Oval, Translucent

11 x 9 mm (calibrated)

$ 38.24

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1.65ct Green Tourmaline, Emerald Cut, VS

1.65ct Green Tourmaline, Emerald Cut, VS

20.5 x 3.2 mm

$ 43.38

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2.30ct Pink Tourmaline, Emerald Cut, VS

2.30ct Pink Tourmaline, Emerald Cut, VS

7.3 x 7.1 mm

$ 173.87

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0.51ct Purple Spinel, Round, VS

0.51ct Purple Spinel, Round, VS

4.7 mm

$ 25.80

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1.80ct Multicolor Labradorite, Pear Shape, Translucent

1.80ct Multicolor Labradorite, Pear Shape, Translucent

9 x 6 mm (calibrated)

$ 3.98

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1.58ct Orange Hessonite Garnet, Oval, VS-SI

1.58ct Orange Hessonite Garnet, Oval, VS-SI

7.8 x 6.4 mm

$ 27.89

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6.39ct Multicolor Dendritic Agate, Baguette, Transparent

6.39ct Multicolor Dendritic Agate, Baguette, Transparent

24.4 x 8.4 mm

$ 22.70

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2.14ctw Green Chrome Diopside, Marquise, VS-SI
Chrome Diopside Product Video (724761)

2.14ctw Green Chrome Diopside, Marquise, VS-SI

10 x 5 mm (calibrated)

$ 53.29

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55.58ct Pink Rose Quartz, Trillion, Transparent

55.58ct Pink Rose Quartz, Trillion, Transparent

29.5 x 24.7 mm

$ 100.48

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0.99ct Green Tourmaline, Emerald Cut, VS

0.99ct Green Tourmaline, Emerald Cut, VS

16.5 x 3 mm

$ 27.12

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10.01ct Brown Smoky Quartz, Emerald Cut, VVS

10.01ct Brown Smoky Quartz, Emerald Cut, VVS

13 x 13 mm (calibrated)

$ 19.63

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2.38ct Orange Moonstone, Cushion, Translucent

2.38ct Orange Moonstone, Cushion, Translucent

8 x 8 mm (calibrated)

$ 4.74

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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

Great experience. I can't wait to explore on the website further.

Posted By Kymmie in September, 2025
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Overall Rating -> 10 star ratings

Great! Affordable

Posted By Spinellope in April, 2026
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Overall Rating -> 10 star ratings

The stones are very nice.

Posted By Mvk in August, 2025
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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!

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Overall Rating -> 9 star ratings

I think therea's no problem

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Overall Rating -> 10 star ratings

good navigation and simple interface.

Posted By Dave in April, 2026
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