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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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1.83ct Green Tourmaline, Oval, VS

1.83ct Green Tourmaline, Oval, VS

7.3 x 6.7 mm

$ 212.65

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0.04ct Black Diamond, Round, Opaque

0.04ct Black Diamond, Round, Opaque

2 mm (calibrated)

$ 13.70

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3.32ct Yellow Citrine, Oval, VVS-VS

3.32ct Yellow Citrine, Oval, VVS-VS

11 x 9 mm (calibrated)

$ 20.30

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55.11ctw Gray Hematite, Round, Opaque

55.11ctw Gray Hematite, Round, Opaque

20 mm (calibrated)

$ 53.74

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2.58ct Yellow Apatite, Oval, VS

2.58ct Yellow Apatite, Oval, VS

9.7 x 7.3 mm

$ 70.67

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0.68ct Yellow Citrine, Pear Shape, VVS

0.68ct Yellow Citrine, Pear Shape, VVS

7 x 5 mm (calibrated)

$ 3.39

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3.83ct Green Jade, Oval, Opaque

3.83ct Green Jade, Oval, Opaque

12 x 10 mm (calibrated)

$ 7.63

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2.29ct Pink Strawberry Quartz, Oval, Transparent

2.29ct Pink Strawberry Quartz, Oval, Transparent

9 x 7 mm (calibrated)

$ 11.40

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5.87ct Purple Kunzite, Emerald Cut, VS

5.87ct Purple Kunzite, Emerald Cut, VS

15.9 x 7.3 mm

$ 160.79

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3.87ctw Pink Rose Quartz, Emerald Cut, Transparent

3.87ctw Pink Rose Quartz, Emerald Cut, Transparent

8 x 8 mm (calibrated)

$ 21.21

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1.03ct Red Rhodolite Garnet, Oval, VS

1.03ct Red Rhodolite Garnet, Oval, VS

7 x 5 mm (calibrated)

$ 20.31

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2.29ctw White Sillimanite Cat'S Eye, Oval, Translucent

2.29ctw White Sillimanite Cat'S Eye, Oval, Translucent

6.6 x 4.5 mm

$ 9.08

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15.56ct White Howlite, Cushion, Opaque

15.56ct White Howlite, Cushion, Opaque

22.3 x 18.1 mm

$ 7.28

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8.70ct Multicolor Fire Agate, Fancy, Opaque

8.70ct Multicolor Fire Agate, Fancy, Opaque

15 x 12.3 mm

$ 65.39

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73.93ct Multicolor Ruby-Zoisite, Oval, Opaque
Ruby-Zoisite Product Video (484042)

73.93ct Multicolor Ruby-Zoisite, Oval, Opaque

37.5 x 25.7 mm

$ 121.50

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6.02ct Green Prehnite, Fancy, Translucent

6.02ct Green Prehnite, Fancy, Translucent

15.4 x 11.3 mm

$ 9.89

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29.41ctw Multicolor Pietersite, Round, Opaque

29.41ctw Multicolor Pietersite, Round, Opaque

18 mm (calibrated)

$ 69.27

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7.26ct Green Prehnite, Cushion, Translucent

7.26ct Green Prehnite, Cushion, Translucent

12 x 12 mm (calibrated)

$ 38.19

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11.65ct Multicolor Boulder Opal, Round, Opaque

11.65ct Multicolor Boulder Opal, Round, Opaque

17 mm (calibrated)

$ 81.22

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1.49ct Multicolor Pietersite, Round, Opaque

1.49ct Multicolor Pietersite, Round, Opaque

8.5 mm (calibrated)

$ 3.60

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1.28ct Pink Morganite, Round, VVS-VS

1.28ct Pink Morganite, Round, VVS-VS

7.5 mm (calibrated)

$ 70.12

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1.30ct Orange Sunstone, Oval, Translucent

1.30ct Orange Sunstone, Oval, Translucent

8 x 6 mm (calibrated)

$ 21.55

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8.04ct Green Druzy Variscite, Fancy, Opaque

8.04ct Green Druzy Variscite, Fancy, Opaque

26.9 x 13.5 mm

$ 8.25

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1.99ct Violet Amethyst, Marquise, VS

1.99ct Violet Amethyst, Marquise, VS

12.1 x 6 mm

$ 15.26

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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

I could see the actual gem I was buying

Posted By Bugs in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

All good

Posted By DouscheGift in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

It was great! Great photos

Posted By Marcia in June, 2026
Source: Bizrate

Overall Rating -> 8 star ratings

The website was easy to use and there were a lot of good options, I was satisfied.

Posted By Brielly in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Enjoy every moment

Posted By Ferns in October, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I am filling a small treasure chest and picked a nice amethyst.

Posted By VinnyD in August, 2025
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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