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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
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3.77ctw Violet Amethyst, Oval, VVS-VS

3.77ctw Violet Amethyst, Oval, VVS-VS

6 x 4 mm (calibrated)

$ 20.66

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0.62ct Yellow Beryl, Oval, VVS

0.62ct Yellow Beryl, Oval, VVS

6.5 x 4.8 mm

$ 12.35

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11.46ct Multicolor Agate, Oval, Opaque

11.46ct Multicolor Agate, Oval, Opaque

18.7 x 12.9 mm

$ 18.14

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33.16ct Multicolor Lepidolite, Pear Shape, Opaque

33.16ct Multicolor Lepidolite, Pear Shape, Opaque

32.7 x 25.7 mm

$ 16.52

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1.48ctw Red Rhodolite Garnet, Square, VVS-VS

1.48ctw Red Rhodolite Garnet, Square, VVS-VS

5 x 5 mm (calibrated)

$ 12.96

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2.06ct Orange Hessonite Garnet, Cushion, VS-SI

2.06ct Orange Hessonite Garnet, Cushion, VS-SI

7 x 7 mm (calibrated)

$ 38.89

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16.64ct Pink Rose Quartz, Oval, Transparent

16.64ct Pink Rose Quartz, Oval, Transparent

18.2 x 14.7 mm

$ 36.46

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0.84ct Yellow Color-Change Diaspore, Pear Shape, VVS-VS

0.84ct Yellow Color-Change Diaspore, Pear Shape, VVS-VS

12 x 3.9 mm

$ 29.45

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1.15ct Green Tsavorite Garnet, Oval, VS-SI
Tsavorite Garnet Product Video (715314)

1.15ct Green Tsavorite Garnet, Oval, VS-SI

7 x 5 mm (calibrated)

$ 458.16

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3.43ctw Red Pyrope Garnet, Square, VS

3.43ctw Red Pyrope Garnet, Square, VS

3.9 x 3.8 mm

$ 26.30

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25.87ct White Rainbow Moonstone, Fancy, Transparent
Rainbow Moonstone Product Video (683078)

25.87ct White Rainbow Moonstone, Fancy, Transparent

33.3 x 12.8 mm

$ 206.13

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2.64ct Brown Tiger'S Eye, Oval, Opaque

2.64ct Brown Tiger'S Eye, Oval, Opaque

9 x 7 mm (calibrated)

$ 2.63

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6.23ct Brown Tiger'S Eye, Baguette, Opaque

6.23ct Brown Tiger'S Eye, Baguette, Opaque

12 x 10 mm (calibrated)

$ 3.42

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55.92ct Multicolor Jasper, Baguette, Opaque

55.92ct Multicolor Jasper, Baguette, Opaque

34.2 x 24.5 mm

$ 38.99

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23.99ct Gray Hematite, Heart, Opaque

23.99ct Gray Hematite, Heart, Opaque

20.5 x 19.2 mm

$ 52.57

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0.98ctw Orange Zircon, Oval, VVS

0.98ctw Orange Zircon, Oval, VVS

5.2 x 3.9 mm

$ 24.40

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19.78ct Violet Amethyst, Round, VVS

19.78ct Violet Amethyst, Round, VVS

18 mm (calibrated)

$ 137.90

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34.72ct Multicolor Rainbow Moonstone, Fancy, Opaque

34.72ct Multicolor Rainbow Moonstone, Fancy, Opaque

36.5 x 11.8 mm

$ 2.88

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18.85ctw Multicolor Fossil Coral, Cushion, Opaque

18.85ctw Multicolor Fossil Coral, Cushion, Opaque

16 x 12 mm (calibrated)

$ 37.17

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24.76ct Multicolor Tiger'S Eye Matrix, Pear Shape, Opaque

24.76ct Multicolor Tiger'S Eye Matrix, Pear Shape, Opaque

27.5 x 17 mm

$ 24.66

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19.83ct Blue Chalcedony, Pear Shape, Opaque
Chalcedony Product Video (694120)

19.83ct Blue Chalcedony, Pear Shape, Opaque

25.9 x 18.3 mm

$ 49.58

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12.08ct Yellow Citrine, Oval, VVS

12.08ct Yellow Citrine, Oval, VVS

18 x 13 mm (calibrated)

$ 66.18

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10.52ct Green Maw-Sit-Sit, Oval, Opaque

10.52ct Green Maw-Sit-Sit, Oval, Opaque

14.1 x 11 mm

$ 23.05

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2.19ct Orange Citrine, Round, VS

2.19ct Orange Citrine, Round, VS

8 mm (calibrated)

$ 18.18

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

My current project is something BLUE . Opal earrings with matching tennis bracelet for her wedding. The opals and sixty two sapphires VVS & VS are AMAZINGLY BEAUTIFUL. The private jewelers were impressed by the clarity and inclusion free of the sapphires . I want to say thank you for the High quality sapphires that I purchased for my daughtera's wedding.

Posted By My real name Dean or Wandering about in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Easy and good price

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Overall Rating -> 10 star ratings

Filters need to be improved but rest of website is great

Posted By Rock hound in December, 2025
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Overall Rating -> 10 star ratings

good navigation and simple interface.

Posted By Dave in April, 2026
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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

Web site is very simple to navigate Selection is terrific

Posted By ToRa.62 in April, 2026
Source: Bizrate
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