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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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0.58ct Orange Sphalerite, Oval, SI

0.58ct Orange Sphalerite, Oval, SI

5.2 x 4.4 mm

$ 28.88

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4.52ctw Yellow Citrine, Oval, VVS

4.52ctw Yellow Citrine, Oval, VVS

10 x 8 mm (calibrated)

$ 24.76

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0.67ct White Topaz, Oval, VVS-VS

0.67ct White Topaz, Oval, VVS-VS

6 x 4 mm (calibrated)

$ 4.67

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0.55ct Green Tourmaline, Baguette, VS

0.55ct Green Tourmaline, Baguette, VS

5.8 x 3.5 mm

$ 19.17

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2.80ct Brown Smoky Quartz, Marquise, VVS

2.80ct Brown Smoky Quartz, Marquise, VVS

18 x 7 mm

$ 16.73

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2.74ct Red Zircon, Oval, VS
Zircon Product Video (406734)

2.74ct Red Zircon, Oval, VS

9 x 7 mm (calibrated)

$ 140.23

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0.48ct Yellow Citrine, Heart, VVS-VS

0.48ct Yellow Citrine, Heart, VVS-VS

5 x 5 mm (calibrated)

$ 3.83

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0.36ct Yellow Color-Change Diaspore, Oval, VVS-VS

0.36ct Yellow Color-Change Diaspore, Oval, VVS-VS

5.6 x 4 mm

$ 19.01

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3.98ctw Red Pyrope Garnet, Square, VS

3.98ctw Red Pyrope Garnet, Square, VS

4 x 4 mm (calibrated)

$ 30.53

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1.28ctw Yellow Citrine, Pear Shape, VVS-VS

1.28ctw Yellow Citrine, Pear Shape, VVS-VS

7 x 5 mm (calibrated)

$ 8.42

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28.16ct Violet Amethyst, Oval, IF

28.16ct Violet Amethyst, Oval, IF

22.4 x 16 mm

$ 215.97

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1.50ct Orange Hessonite Garnet, Cushion, VS-SI

1.50ct Orange Hessonite Garnet, Cushion, VS-SI

6 x 6 mm (calibrated)

$ 23.46

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49.39ct Green Jade, Fancy, Translucent

49.39ct Green Jade, Fancy, Translucent

37.9 x 25.2 mm

$ 30.84

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5.53ctw Green Peridot, Oval, VS

5.53ctw Green Peridot, Oval, VS

8 x 6 mm (calibrated)

$ 55.08

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0.81ct Orange Zircon, Oval, VVS

0.81ct Orange Zircon, Oval, VVS

6 x 4 mm (calibrated)

$ 12.10

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11.35ct Multicolor Agate, Round, Opaque

11.35ct Multicolor Agate, Round, Opaque

14 mm (calibrated)

$ 10.74

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3.34ct Pink Strawberry Quartz, Oval, Transparent

3.34ct Pink Strawberry Quartz, Oval, Transparent

11 x 9 mm (calibrated)

$ 25.05

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16.10ct Blue Chalcedony, Trillion, Opaque
Chalcedony Product Video (694203)

16.10ct Blue Chalcedony, Trillion, Opaque

22.2 x 21.2 mm

$ 40.09

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3.97ct Multicolor Labradorite, Pear Shape, Translucent

3.97ct Multicolor Labradorite, Pear Shape, Translucent

12 x 8 mm (calibrated)

$ 8.77

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2.66ct Yellow Citrine, Square, VS

2.66ct Yellow Citrine, Square, VS

8.4 x 8.2 mm

$ 14.57

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2.68ctw Green Peridot, Emerald Cut, VVS-VS
Peridot Product Video (474528)

2.68ctw Green Peridot, Emerald Cut, VVS-VS

6 x 4 mm (calibrated)

$ 66.73

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0.62ct Orange Sphalerite, Oval, SI-I1

0.62ct Orange Sphalerite, Oval, SI-I1

5.5 x 4.6 mm

$ 30.88

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9.46ct Yellow Citrine, Oval, VVS-VS

9.46ct Yellow Citrine, Oval, VVS-VS

16.8 x 11.3 mm

$ 56.53

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4.98ctw Yellow Citrine, Oval, VVS

4.98ctw Yellow Citrine, Oval, VVS

10 x 8 mm (calibrated)

$ 27.28

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 -> 9 star ratings

Easy to use. Many options to find the right gemstone

Posted By Liz in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Love the precise descriptions and calibrations of hte loose gemstones. Would like to have seen more variety in the size gem I was looking for.

Posted By RenoRose in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Although the stones are smaller than I thought, I really don't think in millimeters, they are perfect. I plan to put one into a ring and the other into a necklace. Ordering was easy, contact kept me aware of how shipping was going, and delivery was sooner than expected. The quality of stones I have ordered in the past and this recent order is outstanding and stones I will be proud to wear.

Posted By Ktreva52 in June, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

My whole experience is great.

Posted By Ghs in November, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

My experience was done with ease

Posted By Barb in October, 2025
Source: Bizrate

Overall Rating -> 7 star ratings

Easy, quick.

Posted By Mich in June, 2026
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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