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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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28.02ct Multicolor Tiger'S Eye Matrix, Fancy, Opaque

28.02ct Multicolor Tiger'S Eye Matrix, Fancy, Opaque

30 x 22 mm (calibrated)

$ 12.84

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1.30ct Purple Spinel, Cushion, VS

1.30ct Purple Spinel, Cushion, VS

6.3 x 6.2 mm

$ 53.95

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1.68ct Yellow Beryl, Oval, VVS

1.68ct Yellow Beryl, Oval, VVS

9 x 7 mm (calibrated)

$ 33.47

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12.21ctw Multicolor Labradorite, Round, Translucent

12.21ctw Multicolor Labradorite, Round, Translucent

12 mm (calibrated)

$ 26.26

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7.22ctw Pink Strawberry Quartz, Round, Translucent

7.22ctw Pink Strawberry Quartz, Round, Translucent

10 mm (calibrated)

$ 110.75

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19.82ct Multicolor Agate, Round, Opaque

19.82ct Multicolor Agate, Round, Opaque

17 mm (calibrated)

$ 15.79

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3.65ct Pink Strawberry Quartz, Oval, Translucent

3.65ct Pink Strawberry Quartz, Oval, Translucent

11.7 x 9.4 mm

$ 43.62

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11.43ct Multicolor Ruby-Zoisite, Baguette, Opaque

11.43ct Multicolor Ruby-Zoisite, Baguette, Opaque

15.3 x 11.3 mm

$ 28.47

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28.19ct Green Serpentine, Oval, Translucent

28.19ct Green Serpentine, Oval, Translucent

28.8 x 19.2 mm

$ 60.37

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11.87ct White Rainbow Moonstone, Pear Shape, Translucent

11.87ct White Rainbow Moonstone, Pear Shape, Translucent

19.3 x 14 mm

$ 82.76

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0.85ct Yellow Morganite, Pear Shape, VS

0.85ct Yellow Morganite, Pear Shape, VS

8 x 6 mm (calibrated)

$ 37.25

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104.33ct Pink Rose Quartz, Trillion, Transparent
Rose Quartz Product Video (522437)

104.33ct Pink Rose Quartz, Trillion, Transparent

33.9 x 32.2 mm

$ 207.82

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2.35ct Yellow Prehnite, Oval, Transparent/Translucent

2.35ct Yellow Prehnite, Oval, Transparent/Translucent

9 x 7 mm (calibrated)

$ 22.04

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5.14ctw Orange Moonstone, Cushion, Translucent

5.14ctw Orange Moonstone, Cushion, Translucent

9 x 7 mm (calibrated)

$ 10.24

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35.22ctw Green Prehnite, Fancy, Transparent

35.22ctw Green Prehnite, Fancy, Transparent

19.2 x 12.6 mm

$ 49.00

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8.73ct Green Prehnite, Fancy, Translucent

8.73ct Green Prehnite, Fancy, Translucent

16 x 12 mm (calibrated)

$ 14.35

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3.82ct Multicolor Labradorite, Marquise, Translucent

3.82ct Multicolor Labradorite, Marquise, Translucent

14 x 7 mm (calibrated)

$ 8.45

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31.07ct Brown Tiger'S Eye, Cushion, Opaque

31.07ct Brown Tiger'S Eye, Cushion, Opaque

22.9 x 15.9 mm

$ 13.00

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23.71ctw Multicolor Fossil Coral, Oval, Opaque

23.71ctw Multicolor Fossil Coral, Oval, Opaque

19.5 x 13.4 mm

$ 30.66

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1.27ct Orange Moonstone, Marquise, Translucent

1.27ct Orange Moonstone, Marquise, Translucent

10 x 5 mm (calibrated)

$ 2.53

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3.91ctw Multicolor Andalusite, Round, VS

3.91ctw Multicolor Andalusite, Round, VS

3.7 mm

$ 171.74

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4.26ct Yellow Citrine, Oval, VVS-VS

4.26ct Yellow Citrine, Oval, VVS-VS

12 x 10 mm (calibrated)

$ 33.95

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0.53ct Yellow Color-Change Diaspore, Oval, VVS

0.53ct Yellow Color-Change Diaspore, Oval, VVS

5.2 x 4.2 mm

$ 27.98

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1.31ct Green Tourmaline, Cushion, VS
Tourmaline Product Video (743358)

1.31ct Green Tourmaline, Cushion, VS

7.5 x 5.7 mm

$ 152.22

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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 -> 9 star ratings

I do enjoy this website and the wide selection. I would like to see more untreated stones. I also wasn't able to see my past order when I logged in.

Posted By Great selection, ok website in July, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

It was great!

Posted By Annie in September, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

No problems. I had a minor address issue in the past and someone got back to me very quickly and we resolved the issue satisfactorily. I appreciated the quick, concerned response. So important when buyer/seller are so far apart in distance. Thank you Gem Select. Keep up the good work!

Posted By Orphanboy in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

All good

Posted By DouscheGift in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

All items were delivered on time with all items meeting or exceeding my expectations. Cut, clarity and color were very close to the photos and description.

Posted By Bob D in December, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

Easy to use. Many options to find the right gemstone

Posted By Liz in May, 2026
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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