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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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0.51ct Green Cat'S Eye Alexandrite, Oval, Opaque

0.51ct Green Cat'S Eye Alexandrite, Oval, Opaque

5.5 x 3.7 mm

$ 102.00

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31.56ct Green Amazonite, Fancy, Opaque

31.56ct Green Amazonite, Fancy, Opaque

40.2 x 10.3 mm

$ 6.28

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13.57ct Multicolor Rainbow Pyrite, Heart, Opaque

13.57ct Multicolor Rainbow Pyrite, Heart, Opaque

18 x 18 mm (calibrated)

$ 35.01

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20.96ct Green Aventurine, Oval, Translucent

20.96ct Green Aventurine, Oval, Translucent

26.1 x 15 mm

$ 20.87

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0.97ct Yellow Citrine, Marquise, VS

0.97ct Yellow Citrine, Marquise, VS

9.1 x 5 mm

$ 7.73

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1.21ctw Brown Moonstone, Round, Translucent

1.21ctw Brown Moonstone, Round, Translucent

5 mm (calibrated)

$ 6.63

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3.74ctw Red Pyrope Garnet, Marquise, VVS-VS

3.74ctw Red Pyrope Garnet, Marquise, VVS-VS

12.1 x 6 mm

$ 32.78

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0.27ct Pink Morganite, Round, VS-SI

0.27ct Pink Morganite, Round, VS-SI

4.5 mm (calibrated)

$ 11.21

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9.59ct Pink Morganite, Oval, Translucent

9.59ct Pink Morganite, Oval, Translucent

14.7 x 11.1 mm

$ 105.07

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1.85ct Orange Hessonite Garnet, Cushion, VS-SI

1.85ct Orange Hessonite Garnet, Cushion, VS-SI

8 x 6 mm (calibrated)

$ 27.51

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2.63ctw Purple Rhodolite Garnet, Trillion, VS

2.63ctw Purple Rhodolite Garnet, Trillion, VS

5 x 5 mm (calibrated)

$ 23.05

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19.62ct Violet Amethyst, Cushion, VVS-VS

19.62ct Violet Amethyst, Cushion, VVS-VS

20 x 15 mm (calibrated)

$ 136.79

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5.55ct Violet Amethyst, Pear Shape, Transparent

5.55ct Violet Amethyst, Pear Shape, Transparent

14 x 10 mm (calibrated)

$ 33.17

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6.45ct Brown Smoky Quartz, Marquise, VVS-VS

6.45ct Brown Smoky Quartz, Marquise, VVS-VS

17.1 x 12 mm

$ 26.00

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1.70ct White Opal, Oval, Transparent

1.70ct White Opal, Oval, Transparent

12 x 8.4 mm

$ 42.33

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0.83ct Green Tourmaline, Emerald Cut, VVS-VS

0.83ct Green Tourmaline, Emerald Cut, VVS-VS

16.5 x 2.8 mm

$ 21.82

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106.50ct Green Amazonite, Square, Opaque

106.50ct Green Amazonite, Square, Opaque

28.2 x 27.4 mm

$ 61.88

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23.12ct Multicolor Jasper, Pear Shape, Opaque

23.12ct Multicolor Jasper, Pear Shape, Opaque

26 x 17.6 mm

$ 14.19

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8.02ct Yellow Citrine, Round, VVS-VS

8.02ct Yellow Citrine, Round, VVS-VS

13 mm (calibrated)

$ 43.93

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1.18ct Pink Tourmaline, Round, Transparent

1.18ct Pink Tourmaline, Round, Transparent

6.5 mm (calibrated)

$ 19.56

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1.14ct Brown Kornerupine, Emerald Cut, VS-SI

1.14ct Brown Kornerupine, Emerald Cut, VS-SI

7.1 x 6.2 mm

$ 135.04

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1.64ct Violet Amethyst, Trillion, VS

1.64ct Violet Amethyst, Trillion, VS

8.4 x 8.2 mm

$ 10.84

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127.53ct Pink Rose Quartz, Oval, Transparent
Rose Quartz Product Video (521476)

127.53ct Pink Rose Quartz, Oval, Transparent

31.9 x 29.5 mm

$ 279.44

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0.55ct Yellow Sphalerite, Round, VS-SI

0.55ct Yellow Sphalerite, Round, VS-SI

4.3 mm

$ 27.39

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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

I love the ability to choose from many options of shapes, gemstone type, color, and so forth. It is fun!

Posted By Geof in November, 2025
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Easy and good price

Posted By Bry_guy in March, 2026
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Overall Rating -> 10 star ratings

the selection is good as are the prices

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Overall Rating -> 10 star ratings

It was good. There was a large selection at prices I could afford.

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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
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Overall Rating -> 10 star ratings

A pleasant experience and many choices to choose from

Posted By Krackenking in November, 2025
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