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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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4.92ct Multicolor Boulder Opal, Fancy, Opaque

4.92ct Multicolor Boulder Opal, Fancy, Opaque

15.3 x 9.4 mm

$ 24.50

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2.80ct Violet Amethyst, Trillion, VVS-VS

2.80ct Violet Amethyst, Trillion, VVS-VS

10 x 10 mm (calibrated)

$ 19.52

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4.78ctw White Topaz, Cushion, VVS-VS

4.78ctw White Topaz, Cushion, VVS-VS

4.6 x 4.5 mm

$ 26.19

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13.52ct Green Serpentine, Oval, Translucent

13.52ct Green Serpentine, Oval, Translucent

22.8 x 14.9 mm

$ 28.95

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2.85ct Red Zircon, Oval, VVS-VS
Zircon Product Video (500926)

2.85ct Red Zircon, Oval, VVS-VS

9.4 x 6.7 mm

$ 124.90

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5.59ct Violet Amethyst, Cushion, VVS

5.59ct Violet Amethyst, Cushion, VVS

15.2 x 9.1 mm

$ 38.98

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6.76ctw Multicolor Pietersite, Oval, Opaque

6.76ctw Multicolor Pietersite, Oval, Opaque

12 x 8 mm (calibrated)

$ 15.95

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5.08ctw Red Almandine Garnet, Round, Transparent

5.08ctw Red Almandine Garnet, Round, Transparent

3 mm (calibrated)

$ 25.30

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7.98ctw Brown Moonstone, Flower Cut, Translucent

7.98ctw Brown Moonstone, Flower Cut, Translucent

12 x 12 mm (calibrated)

$ 34.97

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1.29ctw Red Pyrope Garnet, Square, VVS-VS

1.29ctw Red Pyrope Garnet, Square, VVS-VS

5 x 5 mm (calibrated)

$ 9.89

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3.02ct Yellow Citrine, Oval, VVS

3.02ct Yellow Citrine, Oval, VVS

11 x 9 mm (calibrated)

$ 21.06

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9.27ct White Rainbow Moonstone, Marquise, Transparent

9.27ct White Rainbow Moonstone, Marquise, Transparent

22.2 x 9.3 mm

$ 76.25

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0.91ctw Red Pyrope Garnet, Square, VS

0.91ctw Red Pyrope Garnet, Square, VS

4.2 x 4.1 mm

$ 5.98

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0.97ct Brown Color-Change Garnet, Oval, VS

0.97ct Brown Color-Change Garnet, Oval, VS

6.2 x 5 mm

$ 77.49

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9.73ctw Multicolor Pietersite, Oval, Opaque

9.73ctw Multicolor Pietersite, Oval, Opaque

14.3 x 11.1 mm

$ 22.97

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1.88ct Pink Strawberry Quartz, Round, Translucent

1.88ct Pink Strawberry Quartz, Round, Translucent

8 mm (calibrated)

$ 14.43

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21.68ct Gray Hematite, Emerald Cut, Opaque

21.68ct Gray Hematite, Emerald Cut, Opaque

20.5 x 12.2 mm

$ 19.95

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2.01ct Yellow Apatite, Cushion, VS

2.01ct Yellow Apatite, Cushion, VS

10 x 7 mm (calibrated)

$ 103.50

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1.03ct Yellow Beryl, Trillion, VVS

1.03ct Yellow Beryl, Trillion, VVS

8 x 8 mm (calibrated)

$ 20.52

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6.47ct Violet Amethyst, Pear Shape, VS

6.47ct Violet Amethyst, Pear Shape, VS

16 x 12 mm (calibrated)

$ 49.62

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0.72ct Yellow Beryl, Oval, VVS

0.72ct Yellow Beryl, Oval, VVS

7 x 5 mm (calibrated)

$ 17.93

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0.91ct Green Sphene, Oval, Transparent

0.91ct Green Sphene, Oval, Transparent

6.4 x 5.3 mm

$ 4.53

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16.25ct White Rainbow Moonstone, Oval, Transparent

16.25ct White Rainbow Moonstone, Oval, Transparent

21.3 x 12.2 mm

$ 242.78

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5.13ct Orange Moonstone, Round, Opaque

5.13ct Orange Moonstone, Round, Opaque

10 mm (calibrated)

$ 10.27

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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

Good selection prices are reasonable!

Posted By ToRa62 in April, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

The citrine gems are beautiful. I appreciated that each stone was individually shown on the website so I could see exactly what I was getting. No mystery person selecting random stones for me. The documentation included with each gem was high quality as well. Great price and arrived as expected.

Posted By Jen in December, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

Very easy to navigate with a great selection.

Posted By Bar181 in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

My experience was done with ease

Posted By Barb in October, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

My whole experience is great.

Posted By Ghs in November, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Over pretty well experience the your website no complaints about it very easy reliable service provided

Posted By Blas in January, 2026
Source: Bizrate
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