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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
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Violet Natural Untreated Gemstones
White Natural Untreated Gemstones
Yellow Natural Untreated Gemstones
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23.57ct Gray Hematite, Heart, Opaque

23.57ct Gray Hematite, Heart, Opaque

20.4 x 19.1 mm

$ 51.64

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2.24ctw Red Pyrope Garnet, Marquise, VVS-VS

2.24ctw Red Pyrope Garnet, Marquise, VVS-VS

10 x 5.2 mm

$ 19.63

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6.66ct Yellow Apatite, Oval, VS
Apatite Product Video (387571)

6.66ct Yellow Apatite, Oval, VS

13.9 x 11 mm

$ 356.30

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6.24ct Brown Smoky Quartz, Flower Cut, Transparent

6.24ct Brown Smoky Quartz, Flower Cut, Transparent

14.1 x 10 mm

$ 23.17

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5.06ct Multicolor Pietersite, Oval, Opaque

5.06ct Multicolor Pietersite, Oval, Opaque

19.9 x 10.9 mm

$ 15.12

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3.41ctw Multicolor Labradorite, Round, Transparent

3.41ctw Multicolor Labradorite, Round, Transparent

7 mm (calibrated)

$ 6.91

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1.35ct Orange Zircon, Emerald Cut, VVS

1.35ct Orange Zircon, Emerald Cut, VVS

7 x 5 mm (calibrated)

$ 22.19

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1.78ctw Red Pyrope Garnet, Heart, VVS-VS

1.78ctw Red Pyrope Garnet, Heart, VVS-VS

6 x 6 mm (calibrated)

$ 13.65

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1.49ct Green Tourmaline, Round, Transparent

1.49ct Green Tourmaline, Round, Transparent

6.5 mm (calibrated)

$ 24.69

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12.27ct Multicolor Rainbow Pyrite, Pear Shape, Opaque

12.27ct Multicolor Rainbow Pyrite, Pear Shape, Opaque

24.8 x 13.3 mm

$ 31.77

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1.06ct Blue Kyanite, Round, SI

1.06ct Blue Kyanite, Round, SI

6 mm (calibrated)

$ 26.39

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2.64ctw Blue Kyanite, Oval, VS-SI

2.64ctw Blue Kyanite, Oval, VS-SI

7 x 5 mm (calibrated)

$ 48.21

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1.12ct Multicolor Opal, Oval, Transparent

1.12ct Multicolor Opal, Oval, Transparent

10 x 7 mm (calibrated)

$ 27.89

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34.38ct White Jadeite, Oval, Opaque

34.38ct White Jadeite, Oval, Opaque

28.1 x 21.8 mm

$ 56.51

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3.37ctw Brown Smoky Quartz, Round, VS

3.37ctw Brown Smoky Quartz, Round, VS

8 mm (calibrated)

$ 6.71

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41.14ct White Rainbow Moonstone, Fancy, Opaque

41.14ct White Rainbow Moonstone, Fancy, Opaque

40.2 x 12 mm

$ 12.29

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1.75ct Green Sphene, Oval, Transparent

1.75ct Green Sphene, Oval, Transparent

7 x 6.2 mm

$ 8.72

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0.69ct Yellow Color-Change Garnet, Emerald Cut, VS

0.69ct Yellow Color-Change Garnet, Emerald Cut, VS

7 x 3.5 mm

$ 75.60

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0.21ct Pink Morganite, Round, VVS-VS

0.21ct Pink Morganite, Round, VVS-VS

4 mm (calibrated)

$ 8.72

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0.62ct Purple Spinel, Oval, VVS-VS

0.62ct Purple Spinel, Oval, VVS-VS

5.4 x 4.9 mm

$ 51.46

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2.00ct Red Pyrope Garnet, Round, VS

2.00ct Red Pyrope Garnet, Round, VS

8 mm (calibrated)

$ 100.00

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0.29ct Pink Morganite, Round, VS

0.29ct Pink Morganite, Round, VS

4.5 mm (calibrated)

$ 12.04

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1.99ct Yellow Citrine, Round, VVS

1.99ct Yellow Citrine, Round, VVS

8 mm (calibrated)

$ 13.88

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0.60ct Violet Amethyst, Emerald Cut, VS

0.60ct Violet Amethyst, Emerald Cut, VS

6 x 4 mm (calibrated)

$ 3.49

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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 loved it! Extensive inventory, great prices, I definitely will be buying from here again!

Posted By Lex in April, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

A pleasant experience and many choices to choose from

Posted By Krackenking in November, 2025
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Overall Rating -> 10 star ratings

The website was very easy to use.

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

I could see the actual gem I was buying

Posted By Bugs in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

They have a wonderful selection of gems of all sorts, shapes, cuts, and quality. I am very particular about the quality of stones I buy, and found many with VVS clarity and excellent cut and polish. I am thrilled with each of the stones I purchased, and would definitely recommend GemSelect to everyone.

Posted By Debsarabs in February, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Had a great experience and the prices are great

Posted By BuBx99 in November, 2025
Source: Bizrate
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