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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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1.48ct Orange Hessonite Garnet, Emerald Cut, VVS-VS

1.48ct Orange Hessonite Garnet, Emerald Cut, VVS-VS

7.3 x 5.5 mm

$ 22.01

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1.91ct Yellow Apatite, Emerald Cut, VS

1.91ct Yellow Apatite, Emerald Cut, VS

7.5 x 7.3 mm

$ 98.36

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14.98ctw Multicolor Pietersite, Pear Shape, Opaque

14.98ctw Multicolor Pietersite, Pear Shape, Opaque

25.3 x 10.7 mm

$ 66.14

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0.44ct Green Chrome Diopside, Oval, VVS-VS

0.44ct Green Chrome Diopside, Oval, VVS-VS

6 x 4 mm (calibrated)

$ 10.96

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1.25ct Orange Moonstone, Marquise, Translucent

1.25ct Orange Moonstone, Marquise, Translucent

10 x 5 mm (calibrated)

$ 2.49

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2.37ctw Violet Amethyst, Oval, VS

2.37ctw Violet Amethyst, Oval, VS

6 x 4 mm (calibrated)

$ 12.99

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0.91ct Yellow Color-Change Diaspore, Emerald Cut, VVS-VS

0.91ct Yellow Color-Change Diaspore, Emerald Cut, VVS-VS

6.1 x 4.5 mm

$ 40.90

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2.54ct Yellow Citrine, Oval, VVS

2.54ct Yellow Citrine, Oval, VVS

10 x 8 mm (calibrated)

$ 19.48

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46.47ct Multicolor Jasper, Oval, Opaque

46.47ct Multicolor Jasper, Oval, Opaque

30 x 22 mm (calibrated)

$ 38.19

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1.13ctw Multicolor Opal, Oval, Transparent

1.13ctw Multicolor Opal, Oval, Transparent

6 x 4 mm (calibrated)

$ 38.86

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5.71ct Yellow Citrine, Oval, VVS-VS

5.71ct Yellow Citrine, Oval, VVS-VS

14 x 10 mm (calibrated)

$ 34.28

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1.15ct Purple Rhodolite Garnet, Oval, VS-SI

1.15ct Purple Rhodolite Garnet, Oval, VS-SI

7 x 5 mm (calibrated)

$ 42.95

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0.82ctw Yellow Citrine, Oval, VVS-VS

0.82ctw Yellow Citrine, Oval, VVS-VS

6 x 4 mm (calibrated)

$ 5.17

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1.02ctw Violet Amethyst, Marquise, VS

1.02ctw Violet Amethyst, Marquise, VS

8 x 4 mm (calibrated)

$ 6.77

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11.68ct Black Tourmaline, Oval, Opaque

11.68ct Black Tourmaline, Oval, Opaque

15.7 x 12.5 mm

$ 58.17

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3.79ct Yellow Citrine, Oval, VVS-VS

3.79ct Yellow Citrine, Oval, VVS-VS

11 x 9 mm (calibrated)

$ 24.91

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27.09ct Gray Hematite, Square, Opaque
Hematite Product Video (556098)

27.09ct Gray Hematite, Square, Opaque

18 x 18 mm (calibrated)

$ 27.30

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2.08ct Pink Tourmaline, Oval, Transparent

2.08ct Pink Tourmaline, Oval, Transparent

9 x 7 mm (calibrated)

$ 28.73

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2.84ct Blue Chalcedony, Oval, Transparent

2.84ct Blue Chalcedony, Oval, Transparent

10 x 8 mm (calibrated)

$ 5.66

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1.16ct Purple Spinel, Cushion, VS

1.16ct Purple Spinel, Cushion, VS

7 x 5.3 mm

$ 173.30

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1.82ctw Red Pyrope Garnet, Heart, VVS-VS

1.82ctw Red Pyrope Garnet, Heart, VVS-VS

6 x 6 mm (calibrated)

$ 13.95

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8.66ctw Multicolor Pietersite, Oval, Opaque

8.66ctw Multicolor Pietersite, Oval, Opaque

14 x 10 mm (calibrated)

$ 37.95

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1.16ct Green Tourmaline, Emerald Cut, VVS-VS

1.16ct Green Tourmaline, Emerald Cut, VVS-VS

16.5 x 3.2 mm

$ 27.95

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2.70ct Multicolor Labradorite, Pear Shape, Translucent

2.70ct Multicolor Labradorite, Pear Shape, Translucent

10 x 7 mm (calibrated)

$ 5.97

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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

My experience was done with ease

Posted By Barb in October, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

The purchasing process is fairly quick and straightforward and for me user friendly so it probably took more or less than 3 minutes to purchase and pay for the items. I wish there was a discount offer for multiple items to encourage us buyers to purchase more an incentive and add more sales in your end. Besides that, it's been a great purchasing experience and will continue to shop as I am a repeat customer and have bought from your store many times before. Thank you.

Posted By Emmanuel in October, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

the selection is good as are the prices

Posted By Old man in August, 2025
Source: Bizrate

Overall Rating -> 8 star ratings

It was a good interaction I got a good gemstone for cheap

Posted By Jon in December, 2025
Source: Bizrate

Overall Rating -> 8 star ratings

Site worked well and helped me find a rock that matched what I was looking for. Well within budget and I trust it will show up, so that's definitely positive. Not much else to it. Satisfied.

Posted By Big Ricky in May, 2026
Source: Bizrate

Overall Rating -> 8 star ratings

Good prices

Posted By TRM in October, 2025
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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