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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

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For Example: 6-7
For Example: 8-9
Bi-color Natural Untreated Gemstones
Black Natural Untreated Gemstones
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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
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Violet Natural Untreated Gemstones
White Natural Untreated Gemstones
Yellow Natural Untreated Gemstones
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7.26ct Violet Amethyst, Pear Shape, Transparent

7.26ct Violet Amethyst, Pear Shape, Transparent

16 x 12 mm (calibrated)

$ 43.38

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1.14ct Gray Sillimanite Cat'S Eye, Oval, Transparent

1.14ct Gray Sillimanite Cat'S Eye, Oval, Transparent

7 x 4.5 mm

$ 3.74

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38.99ct Violet Amethyst, Oval, VVS-VS
Amethyst Product Video (751291)

38.99ct Violet Amethyst, Oval, VVS-VS

24 x 18.5 mm

$ 258.89

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17.56ct Violet Amethyst, Oval, IF

17.56ct Violet Amethyst, Oval, IF

20 x 15 mm (calibrated)

$ 116.60

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16.40ct Green Maw-Sit-Sit, Round, Opaque

16.40ct Green Maw-Sit-Sit, Round, Opaque

14 mm (calibrated)

$ 53.90

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3.96ct Violet Amethyst, Round, Transparent

3.96ct Violet Amethyst, Round, Transparent

10.4 mm

$ 27.61

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0.85ct Yellow Citrine, Marquise, VVS-VS

0.85ct Yellow Citrine, Marquise, VVS-VS

9.2 x 5.1 mm

$ 6.77

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15.54ct Pink Rose Quartz, Flower Cut, Transparent

15.54ct Pink Rose Quartz, Flower Cut, Transparent

19.4 x 19.2 mm

$ 34.05

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215.80ct White Dendritic Agate, Oval, Opaque
Dendritic Agate Product Video (693547)

215.80ct White Dendritic Agate, Oval, Opaque

71.8 x 57.7 mm

$ 107.47

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1.64ct Orange Hessonite Garnet, Oval, VS-SI

1.64ct Orange Hessonite Garnet, Oval, VS-SI

8 x 6 mm (calibrated)

$ 32.67

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1.00ct Green Tourmaline, Emerald Cut, VS

1.00ct Green Tourmaline, Emerald Cut, VS

14.4 x 2.8 mm

$ 26.29

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1.85ct Pink Strawberry Quartz, Round, Translucent

1.85ct Pink Strawberry Quartz, Round, Translucent

8 mm (calibrated)

$ 14.19

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1.22ct Red Pyrope Garnet, Marquise, VVS-VS

1.22ct Red Pyrope Garnet, Marquise, VVS-VS

9.9 x 5 mm

$ 10.70

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10.90ct Green Bloodstone, Oval, Opaque

10.90ct Green Bloodstone, Oval, Opaque

16.4 x 10.5 mm

$ 21.71

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1.84ct Orange Hessonite Garnet, Emerald Cut, SI

1.84ct Orange Hessonite Garnet, Emerald Cut, SI

6 x 6 mm (calibrated)

$ 34.27

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43.16ct Pink Rose Quartz, Oval, Transparent

43.16ct Pink Rose Quartz, Oval, Transparent

23.7 x 19.2 mm

$ 63.84

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1.43ct Yellow Beryl, Oval, VVS

1.43ct Yellow Beryl, Oval, VVS

9 x 7 mm (calibrated)

$ 28.49

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7.67ct Turquoise Hemimorphite Druzy, Fancy, Opaque
Hemimorphite Druzy Product Video (439425)

7.67ct Turquoise Hemimorphite Druzy, Fancy, Opaque

12.9 x 11.7 mm

$ 126.05

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6.42ct Multicolor Pietersite, Marquise, Opaque

6.42ct Multicolor Pietersite, Marquise, Opaque

23.5 x 9.1 mm

$ 13.11

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9.97ct Multicolor Rainbow Pyrite, Pear Shape, Opaque

9.97ct Multicolor Rainbow Pyrite, Pear Shape, Opaque

18.8 x 12.8 mm

$ 29.79

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4.42ctw Multicolor Spectrolite, Oval, Opaque

4.42ctw Multicolor Spectrolite, Oval, Opaque

10 x 8 mm (calibrated)

$ 16.84

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6.45ct Orange Spessartite Garnet, Pear Shape, Transparent

6.45ct Orange Spessartite Garnet, Pear Shape, Transparent

10.3 x 9.6 mm

$ 160.61

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2.18ctw Multicolor Labradorite, Round, Translucent

2.18ctw Multicolor Labradorite, Round, Translucent

6 mm (calibrated)

$ 2.61

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18.89ct Green Opal, Cushion, Opaque

18.89ct Green Opal, Cushion, Opaque

20.8 x 16.9 mm

$ 43.82

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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!

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It was great! Great photos

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Easy and good price

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Easy picking, fast checkout, secure shipping. Cana't ask for anything more than efficiency and a good price.

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I had a very easy time navigating the web page and using filters to find what I was looking for. The varied selection was nice to see and pricing is clear and fair.

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Good, hope gem quality is good and genuine

Posted By Varun in May, 2026
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Filters need to be improved but rest of website is great

Posted By Rock hound in December, 2025
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