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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
Single
Pairs
Lots
Faceted
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0.72ct Multicolor Chocolate Opal, Oval, Translucent

0.72ct Multicolor Chocolate Opal, Oval, Translucent

8 x 6 mm (calibrated)

$ 23.66

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28.39ctw Multicolor Fossil Coral, Fancy, Opaque

28.39ctw Multicolor Fossil Coral, Fancy, Opaque

23.7 x 12.4 mm

$ 31.11

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0.98ct Green Tourmaline, Emerald Cut, VVS

0.98ct Green Tourmaline, Emerald Cut, VVS

10 x 3.6 mm

$ 24.40

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16.43ct Multicolor Jasper, Oval, Opaque

16.43ct Multicolor Jasper, Oval, Opaque

20 x 15 mm (calibrated)

$ 13.50

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3.70ct Yellow Citrine, Oval, VS

3.70ct Yellow Citrine, Oval, VS

11 x 9 mm (calibrated)

$ 20.27

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2.21ct Brown Smoky Quartz, Oval, VVS

2.21ct Brown Smoky Quartz, Oval, VVS

9.5 x 7.7 mm

$ 15.40

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2.76ctw Red Pyrope Garnet, Square, VS

2.76ctw Red Pyrope Garnet, Square, VS

5 x 5 mm (calibrated)

$ 21.17

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6.49ctw Black Spinel, Round, Opaque

6.49ctw Black Spinel, Round, Opaque

9.5 mm (calibrated)

$ 24.89

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1.40ctw Red Pyrope Garnet, Square, VVS

1.40ctw Red Pyrope Garnet, Square, VVS

5 x 5 mm (calibrated)

$ 10.74

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1.86ct Red Almandine Garnet, Marquise, VVS-VS

1.86ct Red Almandine Garnet, Marquise, VVS-VS

12 x 6 mm (calibrated)

$ 69.47

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1.20ct Brown Kornerupine, Oval, VVS-VS

1.20ct Brown Kornerupine, Oval, VVS-VS

7.4 x 5.8 mm

$ 99.60

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1.02ct Orange Zircon, Oval, VVS-VS

1.02ct Orange Zircon, Oval, VVS-VS

5.8 x 4.7 mm

$ 15.24

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1.58ctw Orange Moonstone, Trillion, Translucent

1.58ctw Orange Moonstone, Trillion, Translucent

6 x 6 mm (calibrated)

$ 3.17

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16.56ct Pink Kunzite, Pear Shape, VVS-VS
Kunzite Product Video (710240)

16.56ct Pink Kunzite, Pear Shape, VVS-VS

20 x 12.8 mm

$ 437.09

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1.44ct Pink Tourmaline, Oval, VVS-VS

1.44ct Pink Tourmaline, Oval, VVS-VS

7.1 x 6.3 mm

$ 220.87

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3.40ctw Orange Hessonite Garnet, Emerald Cut, VS-SI

3.40ctw Orange Hessonite Garnet, Emerald Cut, VS-SI

6 x 6 mm (calibrated)

$ 67.05

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38.02ct Multicolor Jasper, Fancy, Opaque

38.02ct Multicolor Jasper, Fancy, Opaque

29.4 x 23.9 mm

$ 18.33

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1.64ctw Multicolor Andalusite, Oval, VS

1.64ctw Multicolor Andalusite, Oval, VS

5 x 3.1 mm

$ 87.61

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0.28ct Green Kornerupine, Baguette, VVS

0.28ct Green Kornerupine, Baguette, VVS

4.3 x 3.4 mm

$ 23.99

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0.94ct Pink Morganite, Pear Shape, VS

0.94ct Pink Morganite, Pear Shape, VS

9 x 5.2 mm

$ 72.09

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3.62ct Multicolor Ruby In Fuchsite, Marquise, Translucent

3.62ct Multicolor Ruby In Fuchsite, Marquise, Translucent

15.7 x 8.3 mm

$ 26.73

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31.44ct Multicolor Tiger'S Eye Matrix, Cushion, Opaque

31.44ct Multicolor Tiger'S Eye Matrix, Cushion, Opaque

23.1 x 20.7 mm

$ 31.32

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16.23ct White Dendritic Agate, Pear Shape, Translucent

16.23ct White Dendritic Agate, Pear Shape, Translucent

28.1 x 16.5 mm

$ 32.33

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0.94ct Yellow Color-Change Diaspore, Cushion, VVS-VS

0.94ct Yellow Color-Change Diaspore, Cushion, VVS-VS

7.6 x 5.1 mm

$ 49.19

View Gem
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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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Easy to use website

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I was able to find what I wanted very easily!

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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.

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Overall Rating -> 9 star ratings

All good

Posted By Oliver in September, 2025
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Overall Rating -> 10 star ratings

Very good place to buy gemstones

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Overall Rating -> 10 star ratings

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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