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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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0.86ct Yellow Color-Change Diaspore, Emerald Cut, VVS-VS

0.86ct Yellow Color-Change Diaspore, Emerald Cut, VVS-VS

6.3 x 4.4 mm

$ 45.40

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9.88ct Multicolor Ruby-Zoisite, Baguette, Opaque

9.88ct Multicolor Ruby-Zoisite, Baguette, Opaque

18.1 x 10 mm

$ 24.01

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10.70ct Brown Smoky Quartz, Marquise, Transparent

10.70ct Brown Smoky Quartz, Marquise, Transparent

19.9 x 13.4 mm

$ 44.90

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6.08ct Green Idocrase, Oval, VS
Idocrase Product Video (503095)

6.08ct Green Idocrase, Oval, VS

15 x 10 mm (calibrated)

$ 682.45

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46.72ctw White Howlite, Sphere / Ball, Opaque

46.72ctw White Howlite, Sphere / Ball, Opaque

15 mm (calibrated)

$ 24.19

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27.42ct Multicolor Obsidian, Cushion, Opaque
Obsidian Product Video (523599)

27.42ct Multicolor Obsidian, Cushion, Opaque

30 x 22 mm (calibrated)

$ 23.12

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2.65ct Green Peridot, Cushion, VS-SI
Peridot Product Video (334346)

2.65ct Green Peridot, Cushion, VS-SI

10 x 8 mm (calibrated)

$ 87.10

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18.52ct Black Obsidian, Pear Shape, Opaque

18.52ct Black Obsidian, Pear Shape, Opaque

22.5 x 19.4 mm

$ 13.84

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4.55ct Multicolor Fire Agate, Fancy, Opaque

4.55ct Multicolor Fire Agate, Fancy, Opaque

10.7 x 10.2 mm

$ 64.10

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1.96ct Brown Tiger'S Eye, Marquise, Opaque

1.96ct Brown Tiger'S Eye, Marquise, Opaque

12 x 6 mm (calibrated)

$ 2.54

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0.87ct Brown Smoky Quartz, Baguette, VVS

0.87ct Brown Smoky Quartz, Baguette, VVS

6.5 x 5.4 mm

$ 6.07

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0.56ctw White Diamond, Heart, VVS
Diamond Product Video (685657)

0.56ctw White Diamond, Heart, VVS

3 x 2.6 mm

$ 1,901.30

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1.06ct Purple Sapphire, Pear Shape, VS
Sapphire Product Video (447772)

1.06ct Purple Sapphire, Pear Shape, VS

8.2 x 5.6 mm

$ 559.00

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76.12ct Multicolor Jasper, Pear Shape, Translucent
Jasper Product Video (433017)

76.12ct Multicolor Jasper, Pear Shape, Translucent

41.4 x 34.5 mm

$ 60.66

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112.60ct Pink Rose Quartz, Oval, Transparent
Rose Quartz Product Video (521012)

112.60ct Pink Rose Quartz, Oval, Transparent

35.6 x 25.4 mm

$ 246.73

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1.57ct Green Kornerupine, Trillion, VS-SI
Kornerupine Product Video (453087)

1.57ct Green Kornerupine, Trillion, VS-SI

10.3 x 7.4 mm

$ 86.00

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18.42ct Brown Moonstone, Fancy, Translucent
Moonstone Product Video (582246)

18.42ct Brown Moonstone, Fancy, Translucent

24.7 x 16.5 mm

$ 110.19

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2.41ct Pink Tourmaline, Emerald Cut, VVS-VS
Tourmaline Product Video (545282)

2.41ct Pink Tourmaline, Emerald Cut, VVS-VS

7.7 x 6.8 mm

$ 151.82

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62.26ct Multicolor Jasper, Pear Shape, Opaque
Jasper Product Video (348778)

62.26ct Multicolor Jasper, Pear Shape, Opaque

36.8 x 30.2 mm

$ 68.22

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37.39ct Multicolor Jasper, Oval, Opaque

37.39ct Multicolor Jasper, Oval, Opaque

35.4 x 25.7 mm

$ 22.53

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7.22ct Brown Smoky Quartz, Marquise, VS

7.22ct Brown Smoky Quartz, Marquise, VS

17.1 x 12 mm

$ 29.12

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0.89ct Yellow Morganite, Cushion, VS

0.89ct Yellow Morganite, Cushion, VS

6 x 6 mm (calibrated)

$ 48.75

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35.99ct Multicolor Jasper, Fancy, Opaque
Jasper Product Video (363525)

35.99ct Multicolor Jasper, Fancy, Opaque

31.7 x 23.7 mm

$ 59.15

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9.99ct Pink Kunzite, Pear Shape, VS
Kunzite Product Video (453541)

9.99ct Pink Kunzite, Pear Shape, VS

17.5 x 9.6 mm

$ 273.63

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, quick.

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Filters need to be improved but rest of website is great

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Easy picking, fast checkout, secure shipping. Cana't ask for anything more than efficiency and a good price.

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Great! Affordable

Posted By Spinellope in April, 2026
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Overall Rating -> 10 star ratings

I was able to find what I wanted very easily!

Posted By Lenny in January, 2026
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Overall Rating -> 10 star ratings

The process was pleasant, I chose to purchase the stone traditional to the month of March as it is the month in which I was born.

Posted By Maharishi in June, 2026
Source: Bizrate
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