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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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56.91ct Multicolor Coral, Oval, Opaque
Coral Product Video (491473)

56.91ct Multicolor Coral, Oval, Opaque

43.4 x 32 mm

$ 83.56

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0.46ct Orange Spessartite Garnet, Oval, VS-SI

0.46ct Orange Spessartite Garnet, Oval, VS-SI

5.1 x 4.1 mm

$ 16.04

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2.72ctw Green Peridot, Round, VVS-VS

2.72ctw Green Peridot, Round, VVS-VS

4.5 mm (calibrated)

$ 44.70

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27.80ct Multicolor Agate, Oval, Opaque

27.80ct Multicolor Agate, Oval, Opaque

18.9 x 17.8 mm

$ 22.15

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3.09ctw White Topaz, Cushion, VVS-VS

3.09ctw White Topaz, Cushion, VVS-VS

4.6 x 4.6 mm

$ 16.93

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1.31ct Green Tourmaline, Emerald Cut, VVS-VS

1.31ct Green Tourmaline, Emerald Cut, VVS-VS

16.8 x 3.6 mm

$ 34.45

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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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4.91ct Violet Amethyst, Pear Shape, VVS

4.91ct Violet Amethyst, Pear Shape, VVS

14 x 10 mm (calibrated)

$ 35.67

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4.83ct Violet Amethyst, Round, Transparent

4.83ct Violet Amethyst, Round, Transparent

11 mm (calibrated)

$ 31.76

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2.51ct Orange Moonstone, Cushion, Translucent

2.51ct Orange Moonstone, Cushion, Translucent

9.2 x 7.3 mm

$ 5.00

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13.11ct Violet Amethyst, Cushion, VVS

13.11ct Violet Amethyst, Cushion, VVS

18 x 13 mm (calibrated)

$ 104.46

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0.80ct Yellow Color-Change Diaspore, Emerald Cut, VS

0.80ct Yellow Color-Change Diaspore, Emerald Cut, VS

5.7 x 5.3 mm

$ 20.45

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1.66ctw Green Peridot, Oval, VS

1.66ctw Green Peridot, Oval, VS

7 x 5 mm (calibrated)

$ 14.88

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14.35ct Multicolor Quartz With Hedenbergite, Oval, Transparent

14.35ct Multicolor Quartz With Hedenbergite, Oval, Transparent

20.1 x 12.6 mm

$ 58.95

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4.69ct Pink Rose Quartz, Emerald Cut, Transparent

4.69ct Pink Rose Quartz, Emerald Cut, Transparent

10 x 10 mm (calibrated)

$ 25.70

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2.92ct Yellow Citrine, Oval, VVS-VS

2.92ct Yellow Citrine, Oval, VVS-VS

11.4 x 8.6 mm

$ 22.39

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4.21ct Multicolor Fire Agate, Fancy, Opaque

4.21ct Multicolor Fire Agate, Fancy, Opaque

13.4 x 7.6 mm

$ 35.94

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1.23ct Orange Moonstone, Round, Translucent

1.23ct Orange Moonstone, Round, Translucent

6.5 mm (calibrated)

$ 2.46

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1.64ct Orange Hessonite Garnet, Emerald Cut, VS

1.64ct Orange Hessonite Garnet, Emerald Cut, VS

6 x 6 mm (calibrated)

$ 32.34

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1.05ct Brown Color-Change Garnet, Oval, VVS-VS

1.05ct Brown Color-Change Garnet, Oval, VVS-VS

6.7 x 5.4 mm

$ 83.88

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7.48ct Violet Amethyst, Oval, Transparent

7.48ct Violet Amethyst, Oval, Transparent

15.9 x 10.1 mm

$ 37.25

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6.35ct Brown Smoky Quartz, Emerald Cut, VVS

6.35ct Brown Smoky Quartz, Emerald Cut, VVS

11 x 11 mm (calibrated)

$ 12.46

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13.81ct Red Strawberry Quartz, Oval, Translucent

13.81ct Red Strawberry Quartz, Oval, Translucent

17.8 x 14.2 mm

$ 105.92

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15.57ct Multicolor Labradorite, Pear Shape, Translucent

15.57ct Multicolor Labradorite, Pear Shape, Translucent

20 x 15 mm (calibrated)

$ 34.43

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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

Enjoy viewing the selections. Excellent product

Posted By ToRa.62 in April, 2026
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Overall Rating -> 10 star ratings

Good selection prices are reasonable!

Posted By ToRa62 in April, 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 -> 9 star ratings

I loved the selection of gemstones you have a to z

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

Ia've been searching for a source to get my gemstones for awhile now and was very happy to come across this website. Amazing variety for any income.

Posted By Tarah in August, 2026
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Overall Rating -> 10 star ratings

Maneuvering through the website was easy and enjoyable. I have ordered from GemSelect before and that experience was also pleasant.

Posted By Willow in August, 2026
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