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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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1.95ct Green Prehnite, Oval, Transparent

1.95ct Green Prehnite, Oval, Transparent

7.9 x 6.3 mm

$ 12.59

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4.84ct Pink Strawberry Quartz, Oval, Translucent

4.84ct Pink Strawberry Quartz, Oval, Translucent

11 x 9 mm (calibrated)

$ 37.12

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5.64ctw Violet Amethyst, Trillion, VS

5.64ctw Violet Amethyst, Trillion, VS

10 x 10 mm (calibrated)

$ 39.33

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3.40ctw Brown Smoky Quartz, Round, VS

3.40ctw Brown Smoky Quartz, Round, VS

8 mm (calibrated)

$ 6.77

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0.25ct Green Kornerupine, Square, VS

0.25ct Green Kornerupine, Square, VS

3.8 x 3.8 mm

$ 13.70

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5.55ct Yellow Citrine, Oval, VVS-VS

5.55ct Yellow Citrine, Oval, VVS-VS

14 x 10 mm (calibrated)

$ 33.32

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0.93ct Green Peridot, Oval, VS

0.93ct Green Peridot, Oval, VS

7 x 5 mm (calibrated)

$ 12.96

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1.10ct Green Tourmaline, Emerald Cut, VS

1.10ct Green Tourmaline, Emerald Cut, VS

11.4 x 3.3 mm

$ 28.93

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36.31ctw Multicolor Ruby-Zoisite, Flower Cut, Opaque

36.31ctw Multicolor Ruby-Zoisite, Flower Cut, Opaque

15.5 x 13.9 mm

$ 43.37

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16.45ct Pink Rose Quartz, Oval, Transparent/Translucent

16.45ct Pink Rose Quartz, Oval, Transparent/Translucent

16.4 x 13.9 mm

$ 23.42

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0.61ct Green Peridot, Emerald Cut, VVS-VS

0.61ct Green Peridot, Emerald Cut, VVS-VS

6 x 4 mm (calibrated)

$ 9.11

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1.84ct Yellow Beryl, Cushion, VS

1.84ct Yellow Beryl, Cushion, VS

9 x 7 mm (calibrated)

$ 40.32

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3.20ct Yellow Citrine, Oval, VS

3.20ct Yellow Citrine, Oval, VS

10.9 x 7.8 mm

$ 21.03

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2.06ct Red Almandine Garnet, Marquise, VVS

2.06ct Red Almandine Garnet, Marquise, VVS

12 x 6 mm (calibrated)

$ 76.94

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3.78ctw Multicolor Andalusite, Oval, VS-SI

3.78ctw Multicolor Andalusite, Oval, VS-SI

6 x 4 mm (calibrated)

$ 169.42

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2.80ct Pink Kunzite, Oval, VS
Kunzite Product Video (678366)

2.80ct Pink Kunzite, Oval, VS

8.6 x 7.2 mm

$ 83.66

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7.24ct Multicolor Fire Agate, Fancy, Opaque

7.24ct Multicolor Fire Agate, Fancy, Opaque

18 x 9.4 mm

$ 54.42

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0.90ctw Red Pyrope Garnet, Square, VS

0.90ctw Red Pyrope Garnet, Square, VS

4 x 4 mm (calibrated)

$ 6.91

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3.55ct Yellow Citrine, Emerald Cut, VVS

3.55ct Yellow Citrine, Emerald Cut, VVS

11 x 11 mm (calibrated)

$ 19.46

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1.00ct Yellow Morganite, Pear Shape, VS

1.00ct Yellow Morganite, Pear Shape, VS

8 x 6 mm (calibrated)

$ 54.78

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1.41ct Yellow Rutile Topaz, Pear Shape, Transparent

1.41ct Yellow Rutile Topaz, Pear Shape, Transparent

9 x 5.5 mm

$ 29.26

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2.42ct Pink Morganite, Oval, Transparent

2.42ct Pink Morganite, Oval, Transparent

11.5 x 7.6 mm

$ 27.82

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0.82ctw White Rainbow Moonstone, Marquise, Transparent

0.82ctw White Rainbow Moonstone, Marquise, Transparent

6 x 4 mm (calibrated)

$ 26.96

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1.88ct Yellow Citrine, Trillion, VVS-VS

1.88ct Yellow Citrine, Trillion, VVS-VS

9 x 9 mm (calibrated)

$ 14.43

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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've made several purchases over the last 8 years and I've never been less than happy with any of them.

Posted By Jess in July, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

Will know more once order received

Posted By Jim in September, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I liked the selection of gems, and price. I did not like your PayPal process. I already have a PP account and you want me to sign up for another.

Posted By CLTCJH in May, 2026
Source: Bizrate

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

overall great

Posted By SR in April, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Great! Affordable

Posted By Spinellope in April, 2026
Source: Bizrate
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