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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
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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6.07ct Blue Aquamarine, Oval, Translucent

6.07ct Blue Aquamarine, Oval, Translucent

14.4 x 10.9 mm

$ 125.95

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4.83ctw White Topaz, Cushion, VVS-VS

4.83ctw White Topaz, Cushion, VVS-VS

4.6 x 4.5 mm

$ 26.46

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1.24ct Purple Spinel, Cushion, VS

1.24ct Purple Spinel, Cushion, VS

7.1 x 6.5 mm

$ 123.50

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0.27ct Pink Morganite, Round, VVS

0.27ct Pink Morganite, Round, VVS

4.5 mm (calibrated)

$ 11.21

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0.04ct Black Diamond, Round, Opaque

0.04ct Black Diamond, Round, Opaque

1.9 mm (calibrated)

$ 10.86

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0.98ct Yellow Morganite, Oval, VVS-VS

0.98ct Yellow Morganite, Oval, VVS-VS

8 x 6 mm (calibrated)

$ 42.94

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2.83ct Pink Morganite, Trillion, Transparent

2.83ct Pink Morganite, Trillion, Transparent

10.5 x 9.8 mm

$ 31.01

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0.88ct Gray Spinel, Cushion, VVS-VS

0.88ct Gray Spinel, Cushion, VVS-VS

5.8 x 4.7 mm

$ 73.04

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0.99ct Yellow Beryl, Oval, VVS-VS

0.99ct Yellow Beryl, Oval, VVS-VS

8 x 6 mm (calibrated)

$ 18.90

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0.89ct Yellow Beryl, Oval, VS

0.89ct Yellow Beryl, Oval, VS

7.9 x 5.7 mm

$ 16.99

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0.62ct Purple Spinel, Oval, VS-SI

0.62ct Purple Spinel, Oval, VS-SI

5.6 x 4.7 mm

$ 31.16

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6.59ct White Topaz, Cushion, VS

6.59ct White Topaz, Cushion, VS

12 x 10 mm (calibrated)

$ 43.76

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5.66ct Pink Morganite, Pear Shape, Transparent

5.66ct Pink Morganite, Pear Shape, Transparent

15 x 10 mm (calibrated)

$ 56.37

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0.44ct Pink Spinel, Cushion, VS

0.44ct Pink Spinel, Cushion, VS

4.7 x 4 mm

$ 30.68

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1.28ct Purple Spinel, Cushion, VVS-VS
Spinel Product Video (754853)

1.28ct Purple Spinel, Cushion, VVS-VS

6.7 x 5.8 mm

$ 127.49

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8.45ct Pink Morganite, Pear Shape, Translucent

8.45ct Pink Morganite, Pear Shape, Translucent

17 x 11.1 mm

$ 92.58

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3.89ct Pink Morganite, Pear Shape, Transparent

3.89ct Pink Morganite, Pear Shape, Transparent

13 x 9 mm (calibrated)

$ 16.14

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0.36ct Pink Morganite, Round, VS

0.36ct Pink Morganite, Round, VS

4.7 mm

$ 14.94

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3.08ctw Yellow Golden Beryl, Oval, VS

3.08ctw Yellow Golden Beryl, Oval, VS

9 x 7 mm (calibrated)

$ 74.24

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2.36ct Turquoise Aquamarine, Pear Shape, VS
Aquamarine Product Video (459219)

2.36ct Turquoise Aquamarine, Pear Shape, VS

10 x 7 mm (calibrated)

$ 176.68

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1.39ct Purple Spinel, Cushion, VVS-VS

1.39ct Purple Spinel, Cushion, VVS-VS

7 x 5.6 mm

$ 91.37

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12.10ctw White Topaz, Cushion, VVS-VS
Topaz Product Video (752116)

12.10ctw White Topaz, Cushion, VVS-VS

12 x 10 mm (calibrated)

$ 80.34

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0.15ctw White Diamond, Round, VVS-VS

0.15ctw White Diamond, Round, VVS-VS

2.7 mm (calibrated)

$ 268.16

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2.32ct White Topaz, Square, Transparent

2.32ct White Topaz, Square, Transparent

7 x 7 mm (calibrated)

$ 11.55

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

My current project is something BLUE . Opal earrings with matching tennis bracelet for her wedding. The opals and sixty two sapphires VVS & VS are AMAZINGLY BEAUTIFUL. The private jewelers were impressed by the clarity and inclusion free of the sapphires . I want to say thank you for the High quality sapphires that I purchased for my daughtera's wedding.

Posted By My real name Dean or Wandering about in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

this site is awesome. I was able to look at the products think about purchasing and come back and find the same products. With the amount of inventory gem select has. Its awesome to be able to filter the way that they allow you too.

Posted By Tommyp in November, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Very large selection from affordable to high end I will be coming back to shop again!

Posted By GreenGator in August, 2025
Source: Bizrate

Overall Rating -> 8 star ratings

I've purchased things from GemSelect before. What you see is what you get, which is not always the case with gem sites online. You can find some good value with gem select, and I will buy from them again.

Posted By Meyeusername in March, 2026
Source: Bizrate

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

Was a good experience.

Posted By Tim in July, 2025
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
Enlarged Gemstone Image