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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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0.42ct Yellow Citrine, Marquise, VS

0.42ct Yellow Citrine, Marquise, VS

8 x 4 mm (calibrated)

$ 3.14

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22.20ct Violet Amethyst, Emerald Cut, VVS

22.20ct Violet Amethyst, Emerald Cut, VVS

20 x 15 mm (calibrated)

$ 176.89

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3.47ct Purple Kunzite, Cushion, VS

3.47ct Purple Kunzite, Cushion, VS

9 x 7 mm (calibrated)

$ 95.50

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0.98ctw Orange Citrine, Marquise, VVS

0.98ctw Orange Citrine, Marquise, VVS

8.2 x 4.2 mm

$ 7.81

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5.33ct Purple Kunzite, Cushion, VVS-VS

5.33ct Purple Kunzite, Cushion, VVS-VS

10 x 8 mm (calibrated)

$ 146.68

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1.74ct White Topaz, Marquise, VS

1.74ct White Topaz, Marquise, VS

12 x 5.1 mm

$ 9.53

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1.17ct Pink Morganite, Round, VS

1.17ct Pink Morganite, Round, VS

7 mm (calibrated)

$ 45.45

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4.58ctw Yellow Moonstone, Square, Translucent

4.58ctw Yellow Moonstone, Square, Translucent

7 x 7 mm (calibrated)

$ 9.17

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2.88ct Turquoise Grandidierite, Oval, Translucent
Grandidierite Product Video (603131)

2.88ct Turquoise Grandidierite, Oval, Translucent

10 x 8 mm (calibrated)

$ 157.77

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1.18ct Violet Spinel, Cushion, VS

1.18ct Violet Spinel, Cushion, VS

6 x 6 mm (calibrated)

$ 53.92

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0.88ct Orange Hessonite Garnet, Pear Shape, VS
Hessonite Garnet Product Video (563793)

0.88ct Orange Hessonite Garnet, Pear Shape, VS

6.6 x 4.7 mm

$ 15.02

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6.17ct Black Nuummite, Oval, Opaque

6.17ct Black Nuummite, Oval, Opaque

13.1 x 12.4 mm

$ 25.32

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33.49ct Brown Jasper, Fancy, Opaque

33.49ct Brown Jasper, Fancy, Opaque

39.1 x 11.1 mm

$ 6.67

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6.71ct Pink Kunzite, Emerald Cut, VVS

6.71ct Pink Kunzite, Emerald Cut, VVS

10.7 x 9.7 mm

$ 184.66

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0.11ctw Black Diamond, Round, Opaque

0.11ctw Black Diamond, Round, Opaque

2.3 mm (calibrated)

$ 49.85

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0.78ctw Green Demantoid Garnet, Round, VS

0.78ctw Green Demantoid Garnet, Round, VS

3 mm (calibrated)

$ 113.71

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15.57ct Multicolor Labradorite, Pear Shape, Translucent

15.57ct Multicolor Labradorite, Pear Shape, Translucent

20 x 15 mm (calibrated)

$ 34.43

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11.12ct Brown Tiger'S Eye, Fancy, Opaque

11.12ct Brown Tiger'S Eye, Fancy, Opaque

16 x 16 mm (calibrated)

$ 14.61

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8.80ct Green Jadeite, Oval, Translucent

8.80ct Green Jadeite, Oval, Translucent

16.6 x 13.5 mm

$ 28.93

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3.37ct Pink Strawberry Quartz, Oval, Transparent

3.37ct Pink Strawberry Quartz, Oval, Transparent

11 x 9 mm (calibrated)

$ 25.28

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13.19ct Multicolor Pietersite, Pear Shape, Opaque
Pietersite Product Video (743654)

13.19ct Multicolor Pietersite, Pear Shape, Opaque

26.7 x 12.2 mm

$ 43.79

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1.97ctw Gray Sillimanite Cat'S Eye, Oval, Translucent

1.97ctw Gray Sillimanite Cat'S Eye, Oval, Translucent

6.6 x 4.6 mm

$ 6.47

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16.78ct Black Tourmaline, Oval, Opaque

16.78ct Black Tourmaline, Oval, Opaque

20 x 15 mm (calibrated)

$ 83.56

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5.41ct Multicolor Boulder Opal, Cushion, Opaque

5.41ct Multicolor Boulder Opal, Cushion, Opaque

14 x 10 mm (calibrated)

$ 26.94

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

Had a great experience and the prices are great

Posted By BuBx99 in November, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

selection was broad and the check out was quick. Great site

Posted By JC Karl in September, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

The website was very easy to use.

Posted By Garnet in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I purchased 4 gemstones in different sizes to be able to make a family ring for my granddaughter. I got exactly what I saw and they are absolutely beautiful! Shipping was quick compared to other gem stores I have dealt with! I will definitely order more stones from your company, as I am a collector and have several stones. You are my new go to company in the future

Posted By Liz in June, 2026
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 -> 9 star ratings

They have literally everything on this website! The prices are also pretty good, I was able to find plenty of nice stones that I could afford!

Posted By JC in March, 2026
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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