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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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Lots
Faceted
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2.59ct Pink Morganite, Marquise, Translucent

2.59ct Pink Morganite, Marquise, Translucent

13.6 x 6.2 mm

$ 28.38

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0.71ct Gray Spinel, Cushion, VVS-VS

0.71ct Gray Spinel, Cushion, VVS-VS

5.2 x 4.7 mm

$ 58.93

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12.47ctw Black Spinel, Oval, Opaque

12.47ctw Black Spinel, Oval, Opaque

14 x 10 mm (calibrated)

$ 47.81

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0.55ct Yellow Beryl, Oval, VVS-VS

0.55ct Yellow Beryl, Oval, VVS-VS

7 x 5 mm (calibrated)

$ 13.70

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1.29ct Yellow Beryl, Oval, VVS-VS

1.29ct Yellow Beryl, Oval, VVS-VS

8 x 6 mm (calibrated)

$ 28.27

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1.06ct Purple Spinel, Cushion, VS

1.06ct Purple Spinel, Cushion, VS

6.2 x 5.4 mm

$ 52.39

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3.52ct Yellow Rutile Topaz, Pear Shape, Transparent

3.52ct Yellow Rutile Topaz, Pear Shape, Transparent

9.7 x 9.7 mm

$ 73.04

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13.73ctw Black Spinel, Round, Opaque

13.73ctw Black Spinel, Round, Opaque

12 mm (calibrated)

$ 45.13

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6.15ct Pink Morganite, Pear Shape, Translucent

6.15ct Pink Morganite, Pear Shape, Translucent

15 x 11.1 mm

$ 67.38

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7.33ctw Black Spinel, Round, Opaque

7.33ctw Black Spinel, Round, Opaque

9 mm (calibrated)

$ 32.12

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0.15ctw White Diamond, Round, VVS-VS

0.15ctw White Diamond, Round, VVS-VS

2.6 mm (calibrated)

$ 268.16

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0.13ct Green Alexandrite, Pear Shape, VS

0.13ct Green Alexandrite, Pear Shape, VS

3.9 x 2.8 mm

$ 90.64

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1.56ct Purple Spinel, Cushion, VVS-VS

1.56ct Purple Spinel, Cushion, VVS-VS

6.9 x 6.6 mm

$ 114.86

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0.17ctw White Diamond, Round, VVS-VS

0.17ctw White Diamond, Round, VVS-VS

2.7 mm (calibrated)

$ 303.91

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2.56ct Yellow Rutile Topaz, Trillion, Transparent

2.56ct Yellow Rutile Topaz, Trillion, Transparent

10 x 8.7 mm

$ 53.12

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0.68ct Pink Spinel, Cushion, VVS

0.68ct Pink Spinel, Cushion, VVS

5.6 x 4.3 mm

$ 56.44

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0.72ct Yellow Beryl, Oval, VVS

0.72ct Yellow Beryl, Oval, VVS

7 x 5 mm (calibrated)

$ 17.93

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0.57ct Purple Spinel, Oval, VVS-VS

0.57ct Purple Spinel, Oval, VVS-VS

6.3 x 4.3 mm

$ 47.31

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1.21ct Purple Spinel, Cushion, VVS-VS

1.21ct Purple Spinel, Cushion, VVS-VS

6.5 x 6.1 mm

$ 120.52

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4.92ctw White Topaz, Square, VS

4.92ctw White Topaz, Square, VS

4 x 4 mm (calibrated)

$ 37.73

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1.13ct Yellow Beryl, Cushion, VS

1.13ct Yellow Beryl, Cushion, VS

8 x 6 mm (calibrated)

$ 27.01

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0.06ct Black Diamond, Round, Opaque

0.06ct Black Diamond, Round, Opaque

2.5 mm (calibrated)

$ 29.03

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12.72ctw Black Spinel, Round, Opaque

12.72ctw Black Spinel, Round, Opaque

12 mm (calibrated)

$ 41.82

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4.77ctw White Topaz, Cushion, VVS-VS

4.77ctw White Topaz, Cushion, VVS-VS

4.6 x 4.6 mm

$ 26.14

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

I had a very easy time navigating the web page and using filters to find what I was looking for. The varied selection was nice to see and pricing is clear and fair.

Posted By Mattick in May, 2026
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

Overall Rating -> 9 star ratings

Very easy to navigate with a great selection.

Posted By Bar181 in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

They have a wonderful selection of gems of all sorts, shapes, cuts, and quality. I am very particular about the quality of stones I buy, and found many with VVS clarity and excellent cut and polish. I am thrilled with each of the stones I purchased, and would definitely recommend GemSelect to everyone.

Posted By Debsarabs in February, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

Always a good quality stone. Priced fairly and shipped promptly. Answers emails quickly

Posted By Ron T in November, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Very good.

Posted By Tommy in December, 2025
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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