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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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0.48ct Yellow Color-Change Diaspore, Cushion, VVS-VS

0.48ct Yellow Color-Change Diaspore, Cushion, VVS-VS

5.5 x 4.2 mm

$ 25.34

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0.94ct Orange Citrine, Heart, VVS

0.94ct Orange Citrine, Heart, VVS

7 x 7 mm (calibrated)

$ 7.80

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4.14ctw Red Pyrope Garnet, Square, VS

4.14ctw Red Pyrope Garnet, Square, VS

4 x 4 mm (calibrated)

$ 31.76

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0.93ct Yellow Color-Change Diaspore, Emerald Cut, VVS-VS

0.93ct Yellow Color-Change Diaspore, Emerald Cut, VVS-VS

6 x 4 mm (calibrated)

$ 34.54

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6.78ctw Multicolor Labradorite, Square, Transparent

6.78ctw Multicolor Labradorite, Square, Transparent

4.6 x 4.6 mm

$ 7.88

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2.16ctw White Rainbow Moonstone, Oval, Transparent

2.16ctw White Rainbow Moonstone, Oval, Transparent

7 x 6 mm

$ 71.01

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9.62ctw Pink Strawberry Quartz, Oval, Translucent

9.62ctw Pink Strawberry Quartz, Oval, Translucent

12 x 10 mm (calibrated)

$ 147.56

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6.42ct Brown Tiger'S Eye, Baguette, Opaque

6.42ct Brown Tiger'S Eye, Baguette, Opaque

12 x 10 mm (calibrated)

$ 6.39

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1.42ct Orange Hessonite Garnet, Square, SI

1.42ct Orange Hessonite Garnet, Square, SI

6 x 6 mm (calibrated)

$ 23.89

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1.44ct Brown Kornerupine, Oval, VS
Kornerupine Product Video (453169)

1.44ct Brown Kornerupine, Oval, VS

7.7 x 6.4 mm

$ 119.52

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2.74ct Pink Morganite, Pear Shape, Transparent

2.74ct Pink Morganite, Pear Shape, Transparent

12 x 8 mm (calibrated)

$ 31.48

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0.39ct Orange Spessartite Garnet, Oval, VS

0.39ct Orange Spessartite Garnet, Oval, VS

5 x 3.5 mm

$ 13.25

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6.22ctw Brown Tiger'S Eye, Oval, Opaque

6.22ctw Brown Tiger'S Eye, Oval, Opaque

10 x 8 mm (calibrated)

$ 9.30

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3.50ctw Orange Sunstone, Round, Translucent
Sunstone Product Video (539126)

3.50ctw Orange Sunstone, Round, Translucent

8 mm (calibrated)

$ 38.35

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1.99ct Green Prehnite, Pear Shape, Transparent

1.99ct Green Prehnite, Pear Shape, Transparent

11.2 x 6.8 mm

$ 10.91

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5.43ct Green Prehnite, Flower Cut, Transparent/Translucent

5.43ct Green Prehnite, Flower Cut, Transparent/Translucent

11 x 11 mm (calibrated)

$ 14.88

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49.54ct Green Uvarovite Garnet Drusy, Fancy, Opaque

49.54ct Green Uvarovite Garnet Drusy, Fancy, Opaque

31.5 x 25 mm

$ 74.01

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1.11ct Yellow Citrine, Trillion, VS

1.11ct Yellow Citrine, Trillion, VS

7 x 7 mm (calibrated)

$ 8.85

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16.10ct Brown Smoky Quartz, Emerald Cut, VVS

16.10ct Brown Smoky Quartz, Emerald Cut, VVS

14 x 14 mm (calibrated)

$ 44.11

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5.60ct Yellow Quartz, Cushion, VVS

5.60ct Yellow Quartz, Cushion, VVS

13.3 x 9.9 mm

$ 44.80

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1.07ct Purple Spinel, Cushion, VS

1.07ct Purple Spinel, Cushion, VS

6.5 x 5.5 mm

$ 127.89

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1.74ct Blue Kyanite, Oval, VS-SI

1.74ct Blue Kyanite, Oval, VS-SI

8 x 6 mm (calibrated)

$ 36.22

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0.57ct Violet Amethyst, Emerald Cut, VS

0.57ct Violet Amethyst, Emerald Cut, VS

6 x 4 mm (calibrated)

$ 3.31

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1.20ct Pink Morganite, Oval, VS

1.20ct Pink Morganite, Oval, VS

8 x 6.3 mm

$ 92.03

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

Great site for finding specific stones and sizes for individual pieces of jewelry

Posted By Designer 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
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Overall Rating -> 10 star ratings

The website has a good selection, the interface is very intuitive.

Posted By PhoenixFeatherJewelry in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I found the filter options excellent. Yours was the third site I visited (asked chat got for reputable online sellers of loose gems) and the first I purchased from as I was able to easily find what I was looking for.

Posted By Kelly in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I loved it! Extensive inventory, great prices, I definitely will be buying from here again!

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

My whole experience is great.

Posted By Ghs in November, 2025
Source: Bizrate
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