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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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5.75ctw Red Almandine Garnet, Round, Transparent

5.75ctw Red Almandine Garnet, Round, Transparent

3 mm (calibrated)

$ 31.51

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38.56ct Green Jadeite, Oval, Translucent
Jadeite Product Video (420117)

38.56ct Green Jadeite, Oval, Translucent

28.3 x 22.2 mm

$ 63.36

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6.01ctw Violet Amethyst, Oval, Transparent

6.01ctw Violet Amethyst, Oval, Transparent

11 x 9 mm (calibrated)

$ 23.77

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6.70ct Multicolor Ruby In Fuchsite, Marquise, Translucent

6.70ct Multicolor Ruby In Fuchsite, Marquise, Translucent

23.6 x 11.4 mm

$ 49.48

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10.08ctw Green Jadeite, Oval, Opaque
Jadeite Product Video (643533)

10.08ctw Green Jadeite, Oval, Opaque

12 x 10 mm (calibrated)

$ 74.74

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2.11ct Green Peridot, Cushion, VS

2.11ct Green Peridot, Cushion, VS

9 x 7 mm (calibrated)

$ 90.15

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3.12ct Violet Amethyst, Trillion, VS

3.12ct Violet Amethyst, Trillion, VS

10 x 10 mm (calibrated)

$ 21.75

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1.36ct Purple Spinel, Pear Shape, VS
Spinel Product Video (349455)

1.36ct Purple Spinel, Pear Shape, VS

8.3 x 5.6 mm

$ 225.76

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3.70ct Multicolor Boulder Opal, Fancy, Opaque

3.70ct Multicolor Boulder Opal, Fancy, Opaque

13.1 x 12.3 mm

$ 15.36

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3.23ctw Red Almandine Garnet, Baguette, VVS-VS

3.23ctw Red Almandine Garnet, Baguette, VVS-VS

9.9 x 4.9 mm

$ 112.60

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23.44ct Green Maw-Sit-Sit, Square, Opaque

23.44ct Green Maw-Sit-Sit, Square, Opaque

14 x 14 mm (calibrated)

$ 77.04

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2.47ct Yellow Apatite, Emerald Cut, VS

2.47ct Yellow Apatite, Emerald Cut, VS

8 x 8 mm (calibrated)

$ 127.19

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5.34ct Yellow Citrine, Oval, VVS-VS

5.34ct Yellow Citrine, Oval, VVS-VS

14 x 10 mm (calibrated)

$ 32.06

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1.72ct Pink Strawberry Quartz, Oval, Translucent

1.72ct Pink Strawberry Quartz, Oval, Translucent

9 x 7 mm (calibrated)

$ 13.19

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4.77ct Yellow Citrine, Briolette, VVS

4.77ct Yellow Citrine, Briolette, VVS

12.6 x 8.2 mm

$ 26.70

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1.95ct Green Apatite, Emerald Cut, VS

1.95ct Green Apatite, Emerald Cut, VS

7 x 7 mm (calibrated)

$ 79.36

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13.18ctw Green Prehnite, Flower Cut, Translucent

13.18ctw Green Prehnite, Flower Cut, Translucent

17.4 x 11.7 mm

$ 19.93

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6.59ct Violet Amethyst, Pear Shape, VS

6.59ct Violet Amethyst, Pear Shape, VS

15.6 x 11.4 mm

$ 50.54

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60.24ct Multicolor Rhodonite, Oval, Opaque

60.24ct Multicolor Rhodonite, Oval, Opaque

35.3 x 24.9 mm

$ 34.80

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0.67ct Yellow Citrine, Heart, VVS-VS

0.67ct Yellow Citrine, Heart, VVS-VS

6 x 6 mm (calibrated)

$ 5.34

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2.76ct Brown Moonstone, Flower Cut, Translucent

2.76ct Brown Moonstone, Flower Cut, Translucent

11 x 11 mm (calibrated)

$ 6.04

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2.65ctw Multicolor Opal, Square, Transparent

2.65ctw Multicolor Opal, Square, Transparent

3.7 x 3.7 mm

$ 18.82

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2.19ct Yellow Citrine, Trillion, VVS-VS

2.19ct Yellow Citrine, Trillion, VVS-VS

9 x 9 mm (calibrated)

$ 16.79

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11.74ct Black Obsidian, Pear Shape, Opaque

11.74ct Black Obsidian, Pear Shape, Opaque

23.8 x 17.8 mm

$ 8.77

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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

Love how easy the site is to use. Really love that the pictures are of actual product.

Posted By LeAnn in January, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

I do enjoy this website and the wide selection. I would like to see more untreated stones. I also wasn't able to see my past order when I logged in.

Posted By Great selection, ok website in July, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

Will know more once order received

Posted By Jim in September, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Great prices!!! High quality gemstones.

Posted By Ricky in October, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Easy and good price

Posted By Bry_guy in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I liked the selection of gems, and price. I did not like your PayPal process. I already have a PP account and you want me to sign up for another.

Posted By CLTCJH in May, 2026
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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