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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

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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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0.09ct Black Diamond, Round, Opaque

0.09ct Black Diamond, Round, Opaque

2.6 mm (calibrated)

$ 40.79

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0.53ct Pink Morganite, Pear Shape, SI

0.53ct Pink Morganite, Pear Shape, SI

7 x 5 mm (calibrated)

$ 23.75

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0.10ctw Black Diamond, Round, Opaque

0.10ctw Black Diamond, Round, Opaque

2.1 mm (calibrated)

$ 29.05

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0.35ct Pink Morganite, Round, VS-SI

0.35ct Pink Morganite, Round, VS-SI

5 mm (calibrated)

$ 14.53

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1.12ct Purple Spinel, Cushion, VS

1.12ct Purple Spinel, Cushion, VS

6.3 x 6.1 mm

$ 83.66

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7.37ctw Black Spinel, Round, Opaque

7.37ctw Black Spinel, Round, Opaque

9 mm (calibrated)

$ 24.22

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3.65ct White Topaz, Round, VVS-VS

3.65ct White Topaz, Round, VVS-VS

9.5 mm (calibrated)

$ 32.11

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0.79ct Yellow Morganite, Pear Shape, VS

0.79ct Yellow Morganite, Pear Shape, VS

8 x 6 mm (calibrated)

$ 43.28

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4.78ctw White Topaz, Cushion, VVS-VS

4.78ctw White Topaz, Cushion, VVS-VS

4.6 x 4.5 mm

$ 26.19

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0.18ct Pink Morganite, Round, VVS-VS

0.18ct Pink Morganite, Round, VVS-VS

4.2 mm

$ 7.47

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0.79ct Purple Spinel, Cushion, VS

0.79ct Purple Spinel, Cushion, VS

5.5 x 4.3 mm

$ 65.57

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1.22ct Purple Sapphire, Cushion, VS-SI
Sapphire Product Video (447796)

1.22ct Purple Sapphire, Cushion, VS-SI

6.2 x 5.1 mm

$ 643.37

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1.98ct Brown Rutile Topaz, Marquise, Transparent

1.98ct Brown Rutile Topaz, Marquise, Transparent

12.7 x 6.2 mm

$ 41.09

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2.37ct Yellow Beryl, Oval, VS

2.37ct Yellow Beryl, Oval, VS

10 x 8 mm (calibrated)

$ 47.21

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1.37ct Purple Spinel, Cushion, VVS-VS

1.37ct Purple Spinel, Cushion, VVS-VS

6.5 x 5.5 mm

$ 97.57

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0.52ct Green Cat'S Eye Alexandrite, Oval, Opaque

0.52ct Green Cat'S Eye Alexandrite, Oval, Opaque

5 x 3.4 mm

$ 86.32

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4.93ct Yellow Rutile Topaz, Pear Shape, Transparent

4.93ct Yellow Rutile Topaz, Pear Shape, Transparent

13 x 9 mm (calibrated)

$ 102.30

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3.84ctw White Topaz, Square, VVS-VS

3.84ctw White Topaz, Square, VVS-VS

4 x 4 mm (calibrated)

$ 30.92

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4.06ct Yellow Rutile Topaz, Pear Shape, Transparent

4.06ct Yellow Rutile Topaz, Pear Shape, Transparent

13.2 x 8 mm

$ 84.25

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1.31ct Yellow Beryl, Round, VVS

1.31ct Yellow Beryl, Round, VVS

7 mm (calibrated)

$ 28.70

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1.72ct Yellow Beryl, Round, VVS

1.72ct Yellow Beryl, Round, VVS

8 mm (calibrated)

$ 34.26

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4.78ct Brown Rutile Topaz, Pear Shape, Transparent

4.78ct Brown Rutile Topaz, Pear Shape, Transparent

12.8 x 10.6 mm

$ 99.19

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2.36ctw Multicolor Andalusite, Oval, VVS-VS

2.36ctw Multicolor Andalusite, Oval, VVS-VS

6 x 4 mm (calibrated)

$ 129.28

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0.71ct Pink Spinel, Cushion, VS

0.71ct Pink Spinel, Cushion, VS

6 x 4 mm (calibrated)

$ 49.50

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

Easy and good price

Posted By Bry_guy 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

Love, and have always loved, your website.

Posted By Aberabic in July, 2025
Source: Bizrate

Overall Rating -> 8 star ratings

Good prices

Posted By TRM in October, 2025
Source: Bizrate

Overall Rating -> 8 star ratings

I visited several online loose stone shops trying to find rare stones. I finally found one that I've been looking for here, and very satisfied. Looking forward to receive the item in 3 weeks.

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