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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
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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
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Violet Natural Untreated Gemstones
White Natural Untreated Gemstones
Yellow Natural Untreated Gemstones
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4.49ctw White Topaz, Cushion, VS

4.49ctw White Topaz, Cushion, VS

4.6 x 4.5 mm

$ 24.60

View Gem
0.63ct Red Spinel, Cushion, VS

0.63ct Red Spinel, Cushion, VS

4.9 x 4.7 mm

$ 43.92

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0.22ct White Diamond, Round, VVS
Diamond Product Video (747200)

0.22ct White Diamond, Round, VVS

3.8 mm

$ 369.37

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0.21ctw White Diamond, Round, VVS-VS
Diamond Product Video (567423)

0.21ctw White Diamond, Round, VVS-VS

3 mm (calibrated)

$ 375.43

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1.72ct Yellow Golden Beryl, Oval, VS

1.72ct Yellow Golden Beryl, Oval, VS

9 x 7 mm (calibrated)

$ 41.45

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1.07ct Yellow Beryl, Oval, VS

1.07ct Yellow Beryl, Oval, VS

8 x 6 mm (calibrated)

$ 21.31

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1.45ct Purple Spinel, Oval, VS

1.45ct Purple Spinel, Oval, VS

6.7 x 6.3 mm

$ 144.54

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1.07ct Purple Sapphire, Pear Shape, VS-SI
Sapphire Product Video (448507)

1.07ct Purple Sapphire, Pear Shape, VS-SI

7.1 x 6 mm

$ 513.68

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4.18ct Pink Morganite, Trillion, Transparent

4.18ct Pink Morganite, Trillion, Transparent

11 x 11 mm (calibrated)

$ 45.80

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2.19ctw Yellow Beryl, Oval, VVS-VS

2.19ctw Yellow Beryl, Oval, VVS-VS

8 x 6 mm (calibrated)

$ 43.62

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5.52ct Gray Star Sapphire, Oval, Opaque

5.52ct Gray Star Sapphire, Oval, Opaque

9.5 x 8.5 mm

$ 211.67

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6.69ct Yellow Rutile Topaz, Pear Shape, Transparent

6.69ct Yellow Rutile Topaz, Pear Shape, Transparent

14.9 x 9.5 mm

$ 138.82

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0.99ct Pink Morganite, Round, VS-SI

0.99ct Pink Morganite, Round, VS-SI

7 mm (calibrated)

$ 38.45

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2.22ct Yellow Beryl, Oval, VVS-VS

2.22ct Yellow Beryl, Oval, VVS-VS

10 x 8 mm (calibrated)

$ 44.22

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0.17ctw White Diamond, Round, VVS-VS

0.17ctw White Diamond, Round, VVS-VS

2.7 mm (calibrated)

$ 308.86

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4.58ctw White Topaz, Square, VVS-VS

4.58ctw White Topaz, Square, VVS-VS

4.2 x 4.2 mm

$ 33.52

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5.41ct Orange Imperial Topaz, Pear Shape, VS
Imperial Topaz Product Video (346645)

5.41ct Orange Imperial Topaz, Pear Shape, VS

18.1 x 7.5 mm

$ 3,319.23

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0.70ct Pink Spinel, Cushion, VVS-VS

0.70ct Pink Spinel, Cushion, VVS-VS

5.6 x 4.6 mm

$ 48.80

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0.22ct Black Diamond, Round, Opaque

0.22ct Black Diamond, Round, Opaque

3.5 mm (calibrated)

$ 104.66

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0.82ct Pink Morganite, Pear Shape, VS-SI

0.82ct Pink Morganite, Pear Shape, VS-SI

7.4 x 5.7 mm

$ 35.94

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1.65ct Yellow Beryl, Round, VVS

1.65ct Yellow Beryl, Round, VVS

8 mm (calibrated)

$ 32.87

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0.79ct Pink Morganite, Pear Shape, VVS

0.79ct Pink Morganite, Pear Shape, VVS

8 x 5 mm (calibrated)

$ 62.95

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1.06ct Purple Spinel, Cushion, VVS

1.06ct Purple Spinel, Cushion, VVS

6 x 5.3 mm

$ 175.96

View Gem
1.00ctw White Topaz, Oval, VVS

1.00ctw White Topaz, Oval, VVS

6 x 4 mm (calibrated)

$ 6.97

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 can pick and choose from large selection and find just what I need for .y projects, currently my cane.

Posted By Darkstar731 in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

This is the first time I have used this site. I was dissatisfied with the quality of gems and supplies elsewhere and decided to try GemSelect. They are awesome! I was thrilled to see the variety and the great web performance. There was the ability to search for information as well as gems. Things like the clarity rating system and caret weight of the gems. I have always loved making things and I have just started to make jewelry as a business. However I have never made a ring before and have always wanted to. On GemSelect I was able to find good quality gems to use in my creations. I am so glad the website is so easy to use. Thank you GemSelect.

Posted By PickyShopper in April, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

I did not realize these stones were of jewelry quality. They are really beautiful, just not what I was expecting which was more of a natural stone.

Posted By Jewelry Quality Stones in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I needed a very specific color of tourmaline and Gem Select had it. I had to get the client to agree and then ordered the stone. It arrived better than pictured and we all were very happy.

Posted By Tim W in February, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I love the ability to choose from many options of shapes, gemstone type, color, and so forth. It is fun!

Posted By Geof in November, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Good. I ts very user friendly.

Posted By Shalini in June, 2025
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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