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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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8.92ctw Multicolor Pietersite, Oval, Opaque

8.92ctw Multicolor Pietersite, Oval, Opaque

14 x 10 mm (calibrated)

$ 35.54

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40.42ct Multicolor Ruby-Zoisite, Pear Shape, Opaque

40.42ct Multicolor Ruby-Zoisite, Pear Shape, Opaque

29 x 24.8 mm

$ 66.42

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0.96ct Yellow Color-Change Diaspore, Emerald Cut, VVS-VS

0.96ct Yellow Color-Change Diaspore, Emerald Cut, VVS-VS

5.9 x 4.7 mm

$ 29.45

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2.35ct Orange Sunstone, Round, Translucent

2.35ct Orange Sunstone, Round, Translucent

8.5 mm (calibrated)

$ 14.05

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2.55ct Pink Strawberry Quartz, Oval, Transparent

2.55ct Pink Strawberry Quartz, Oval, Transparent

9 x 7 mm (calibrated)

$ 12.70

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15.14ct White Rainbow Moonstone, Pear Shape, Translucent

15.14ct White Rainbow Moonstone, Pear Shape, Translucent

22.8 x 17 mm

$ 105.56

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7.37ct Multicolor Rainbow Pyrite, Fancy, Opaque

7.37ct Multicolor Rainbow Pyrite, Fancy, Opaque

14.2 x 11.5 mm

$ 22.02

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31.92ct Yellow Calcite, Pear Shape, Translucent

31.92ct Yellow Calcite, Pear Shape, Translucent

36.8 x 17.2 mm

$ 21.93

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8.83ct Brown Moonstone, Oval, Translucent

8.83ct Brown Moonstone, Oval, Translucent

15 x 10 mm (calibrated)

$ 19.07

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2.90ctw Yellow Golden Beryl, Oval, VS

2.90ctw Yellow Golden Beryl, Oval, VS

9 x 7 mm (calibrated)

$ 69.90

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4.29ct Pink Morganite, Marquise, Translucent

4.29ct Pink Morganite, Marquise, Translucent

17.1 x 7.2 mm

$ 47.00

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0.82ct Green Peridot, Emerald Cut, VS

0.82ct Green Peridot, Emerald Cut, VS

7 x 5 mm (calibrated)

$ 12.25

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1.55ct Violet Amethyst, Heart, VVS-VS

1.55ct Violet Amethyst, Heart, VVS-VS

8 x 8 mm (calibrated)

$ 9.26

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4.18ct Pink Morganite, Pear Shape, Transparent

4.18ct Pink Morganite, Pear Shape, Transparent

12 x 9 mm

$ 17.35

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6.41ct Turquoise Grandidierite, Oval, Translucent
Grandidierite Product Video (471871)

6.41ct Turquoise Grandidierite, Oval, Translucent

14 x 12 mm (calibrated)

$ 1,053.42

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7.63ct Yellow Citrine, Emerald Cut, VVS-VS

7.63ct Yellow Citrine, Emerald Cut, VVS-VS

14 x 10 mm (calibrated)

$ 58.52

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45.90ct Multicolor Rhodonite, Oval, Opaque

45.90ct Multicolor Rhodonite, Oval, Opaque

33.7 x 24.8 mm

$ 26.51

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1.22ct Pink Morganite, Round, VS

1.22ct Pink Morganite, Round, VS

7 mm (calibrated)

$ 47.39

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32.12ct Multicolor Rainbow Moonstone, Fancy, Opaque

32.12ct Multicolor Rainbow Moonstone, Fancy, Opaque

42.1 x 10.1 mm

$ 3.20

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4.55ct Multicolor Fire Agate, Fancy, Opaque
Fire Agate Product Video (683581)

4.55ct Multicolor Fire Agate, Fancy, Opaque

14.2 x 7.4 mm

$ 34.99

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6.01ct Green Peridot, Heart, VVS-VS
Peridot Product Video (746919)

6.01ct Green Peridot, Heart, VVS-VS

11.7 x 11.2 mm

$ 1,296.96

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1.96ct Orange Pyrope Garnet, Fancy, Translucent

1.96ct Orange Pyrope Garnet, Fancy, Translucent

11.9 x 8.4 mm

$ 4.92

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0.96ct Orange Citrine, Heart, VS-SI

0.96ct Orange Citrine, Heart, VS-SI

7 x 7 mm (calibrated)

$ 7.97

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1.44ct Red Tourmaline, Oval, VVS-VS

1.44ct Red Tourmaline, Oval, VVS-VS

7.6 x 6.5 mm

$ 215.14

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

Posted By Blas in January, 2026
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Overall Rating -> 10 star ratings

I always purchase my stones from GemSelect, their products are high quality and customer service is always great. I also like the fact that I am able to purchase unique items

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So far So good

Posted By VH-1 in July, 2025
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Overall Rating -> 10 star ratings

I was looking for high-quality amethyst on this site, and I was able to compare size, color, and weight in detail before making a purchase.

Posted By Atsuhisa in January, 2026
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Overall Rating -> 10 star ratings

Great website, easy to navigate, and loads quickly. Have bought here before, very pleased!

Posted By SallyO in February, 2026
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