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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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0.60ct Multicolor Labradorite, Pear Shape, Translucent

0.60ct Multicolor Labradorite, Pear Shape, Translucent

6 x 4 mm (calibrated)

$ 1.33

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1.50ct Green Tourmaline, Emerald Cut, VS
Tourmaline Product Video (437767)

1.50ct Green Tourmaline, Emerald Cut, VS

16.8 x 4.1 mm

$ 37.35

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20.46ct Multicolor Agate, Oval, Opaque

20.46ct Multicolor Agate, Oval, Opaque

21.2 x 19 mm

$ 19.36

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1.74ct Green Tourmaline, Oval, Transparent

1.74ct Green Tourmaline, Oval, Transparent

8.3 x 6.3 mm

$ 29.83

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30.58ct Red Star Garnet, Oval, Opaque

30.58ct Red Star Garnet, Oval, Opaque

17.4 x 14.1 mm

$ 30.15

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1.53ctw White Rainbow Moonstone, Pear Shape, Transparent

1.53ctw White Rainbow Moonstone, Pear Shape, Transparent

5 x 5 mm (calibrated)

$ 28.49

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15.75ctw Black Spinel, Oval, Opaque

15.75ctw Black Spinel, Oval, Opaque

14 x 10 mm (calibrated)

$ 51.78

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0.59ct Red Pyrope Garnet, Heart, VVS-VS

0.59ct Red Pyrope Garnet, Heart, VVS-VS

5 x 5 mm (calibrated)

$ 14.69

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12.31ct Pink Tiger'S Eye, Fancy, Opaque

12.31ct Pink Tiger'S Eye, Fancy, Opaque

15.1 x 13.5 mm

$ 16.19

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11.70ct Green Maw-Sit-Sit, Oval, Opaque

11.70ct Green Maw-Sit-Sit, Oval, Opaque

16 x 12 mm (calibrated)

$ 34.96

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2.71ctw Pink Strawberry Quartz, Round, Transparent

2.71ctw Pink Strawberry Quartz, Round, Transparent

7 mm (calibrated)

$ 41.57

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12.29ctw Multicolor Labradorite, Baguette, Transparent

12.29ctw Multicolor Labradorite, Baguette, Transparent

11 x 9 mm (calibrated)

$ 15.75

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1.44ct Purple Tourmaline, Round, Transparent

1.44ct Purple Tourmaline, Round, Transparent

6.5 mm (calibrated)

$ 24.68

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8.91ct Green Fluorite, Oval, VVS-VS
Fluorite Product Video (757527)

8.91ct Green Fluorite, Oval, VVS-VS

15.1 x 11.2 mm

$ 80.19

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1.07ct Yellow Beryl, Oval, VVS-VS

1.07ct Yellow Beryl, Oval, VVS-VS

8 x 6 mm (calibrated)

$ 26.64

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0.79ct Green Tourmaline, Oval, Transparent

0.79ct Green Tourmaline, Oval, Transparent

6.2 x 4.7 mm

$ 13.11

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3.19ct Violet Amethyst, Oval, Transparent

3.19ct Violet Amethyst, Oval, Transparent

10 x 8 mm (calibrated)

$ 19.07

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0.62ct Yellow Zircon, Oval, VVS-VS

0.62ct Yellow Zircon, Oval, VVS-VS

5 x 4 mm (calibrated)

$ 15.44

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17.08ct Black Obsidian, Marquise, Opaque

17.08ct Black Obsidian, Marquise, Opaque

27.9 x 14 mm

$ 18.72

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2.01ct Green Tourmaline, Emerald Cut, VS

2.01ct Green Tourmaline, Emerald Cut, VS

21.9 x 3.6 mm

$ 55.06

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3.67ct Green Prehnite, Oval, Transparent/Translucent

3.67ct Green Prehnite, Oval, Transparent/Translucent

10 x 8 mm (calibrated)

$ 10.06

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6.61ct Violet Amethyst, Marquise, Transparent

6.61ct Violet Amethyst, Marquise, Transparent

16.2 x 9.8 mm

$ 32.92

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2.06ct Yellow Beryl, Round, VVS-VS

2.06ct Yellow Beryl, Round, VVS-VS

8 mm (calibrated)

$ 45.14

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3.24ctw Brown Smoky Quartz, Round, VS

3.24ctw Brown Smoky Quartz, Round, VS

8 mm (calibrated)

$ 7.10

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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

Found a rock that met my need. Bought it!

Posted By Skot in May, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

It was great!

Posted By Annie in September, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

My current project is something BLUE . Opal earrings with matching tennis bracelet for her wedding. The opals and sixty two sapphires VVS & VS are AMAZINGLY BEAUTIFUL. The private jewelers were impressed by the clarity and inclusion free of the sapphires . I want to say thank you for the High quality sapphires that I purchased for my daughtera's wedding.

Posted By My real name Dean or Wandering about in May, 2026
Source: Bizrate

Overall Rating -> 8 star ratings

It was fine

Posted By Na in April, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Great site for finding specific stones and sizes for individual pieces of jewelry

Posted By Designer in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I was able to find what I wanted very easily!

Posted By Lenny in January, 2026
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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