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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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1.32ct White Sillimanite Cat'S Eye, Round, Transparent

1.32ct White Sillimanite Cat'S Eye, Round, Transparent

6 mm (calibrated)

$ 4.13

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6.19ct White Topaz, Cushion, VS

6.19ct White Topaz, Cushion, VS

12 x 10 mm (calibrated)

$ 41.10

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26.62ct Violet Amethyst, Round, VVS-VS

26.62ct Violet Amethyst, Round, VVS-VS

20 mm (calibrated)

$ 185.60

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1.63ct Green Sphene, Oval, Transparent

1.63ct Green Sphene, Oval, Transparent

7.6 x 6.1 mm

$ 8.93

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2.55ct Yellow Rutile Topaz, Heart, Transparent

2.55ct Yellow Rutile Topaz, Heart, Transparent

8.7 x 8.3 mm

$ 52.91

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0.95ct Yellow Sphene, Oval, Transparent

0.95ct Yellow Sphene, Oval, Transparent

5.9 x 5.3 mm

$ 4.73

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15.33ct Yellow Rutile Quartz, Pear Shape, Transparent
Rutile Quartz Product Video (334056)

15.33ct Yellow Rutile Quartz, Pear Shape, Transparent

19.1 x 15.8 mm

$ 57.10

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5.47ct Yellow Citrine, Oval, VVS-VS
Citrine Product Video (492644)

5.47ct Yellow Citrine, Oval, VVS-VS

14 x 10 mm (calibrated)

$ 32.85

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2.04ct Orange Hessonite Garnet, Oval, VS-SI

2.04ct Orange Hessonite Garnet, Oval, VS-SI

9 x 7 mm (calibrated)

$ 40.64

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6.44ct Pink Morganite, Oval, Transparent

6.44ct Pink Morganite, Oval, Transparent

13 x 11 mm (calibrated)

$ 64.14

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1.23ct Yellow Rutile Topaz, Pear Shape, Transparent

1.23ct Yellow Rutile Topaz, Pear Shape, Transparent

8.9 x 5.7 mm

$ 25.52

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1.65ctw Red Pyrope Garnet, Pear Shape, VS

1.65ctw Red Pyrope Garnet, Pear Shape, VS

7 x 5 mm (calibrated)

$ 12.66

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3.90ct Yellow Citrine, Oval, VS

3.90ct Yellow Citrine, Oval, VS

11 x 9 mm (calibrated)

$ 25.64

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8.73ct Yellow Citrine, Pear Shape, VVS

8.73ct Yellow Citrine, Pear Shape, VVS

14 x 14 mm (calibrated)

$ 57.97

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2.25ctw Multicolor Andalusite, Round, VS-SI

2.25ctw Multicolor Andalusite, Round, VS-SI

4 mm (calibrated)

$ 110.94

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1.36ct Pink Tourmaline, Oval, VVS-VS

1.36ct Pink Tourmaline, Oval, VVS-VS

7.4 x 7 mm

$ 158.03

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3.09ctw White Rainbow Moonstone, Square, Transparent

3.09ctw White Rainbow Moonstone, Square, Transparent

3 x 3 mm (calibrated)

$ 52.32

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0.93ctw Orange Spessartite Garnet, Oval, VS

0.93ctw Orange Spessartite Garnet, Oval, VS

5 x 4 mm (calibrated)

$ 32.42

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0.50ct White Rainbow Moonstone, Square, Transparent

0.50ct White Rainbow Moonstone, Square, Transparent

5 x 5 mm (calibrated)

$ 17.43

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2.26ct Pink Morganite, Pear Shape, Transparent

2.26ct Pink Morganite, Pear Shape, Transparent

12 x 8 mm (calibrated)

$ 24.76

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4.51ct Multicolor Labradorite, Round, Translucent

4.51ct Multicolor Labradorite, Round, Translucent

10 mm (calibrated)

$ 10.96

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1.12ct Yellow Color-Change Diaspore, Emerald Cut, VS

1.12ct Yellow Color-Change Diaspore, Emerald Cut, VS

8.1 x 4.3 mm

$ 60.22

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2.94ct Yellow Citrine, Oval, VVS

2.94ct Yellow Citrine, Oval, VVS

11 x 9 mm (calibrated)

$ 16.10

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6.64ctw Pink Strawberry Quartz, Oval, Translucent

6.64ctw Pink Strawberry Quartz, Oval, Translucent

11 x 9 mm (calibrated)

$ 51.86

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!

Overall Rating -> 10 star ratings

Found a beautiful opal at a great price. I was not disappointed when it arrived. Even better in person.

Posted By Fried Rice in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Found a rock that met my need. Bought it!

Posted By Skot in May, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

It was fine . Wish there had been more round stones to select from

Posted By Emm in January, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

Will know more once order received

Posted By Jim in September, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

On the clarity options it goes "and better" so if youre looking for si specifically and you click si and better it still shows you basically everything. It just removes the opaques. Itd be nice if it was vs only, vss only, si only, etc

Posted By Iamnotakrustykrab in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

this site is awesome. I was able to look at the products think about purchasing and come back and find the same products. With the amount of inventory gem select has. Its awesome to be able to filter the way that they allow you too.

Posted By Tommyp in November, 2025
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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