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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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1.02ct Purple Spinel, Pear Shape, VVS
Spinel Product Video (400519)

1.02ct Purple Spinel, Pear Shape, VVS

7.6 x 6.1 mm

$ 177.62

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3.35ct Pink Morganite, Pear Shape, Transparent

3.35ct Pink Morganite, Pear Shape, Transparent

13.7 x 7.9 mm

$ 13.90

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0.55ct Red Spinel, Cushion, VVS-VS

0.55ct Red Spinel, Cushion, VVS-VS

5.2 x 4.6 mm

$ 38.35

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4.01ct Blue Aquamarine, Pear Shape, Translucent

4.01ct Blue Aquamarine, Pear Shape, Translucent

13 x 9 mm (calibrated)

$ 83.21

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0.60ct Purple Spinel, Cushion, VVS-VS

0.60ct Purple Spinel, Cushion, VVS-VS

5 x 4 mm (calibrated)

$ 41.83

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0.06ct Black Diamond, Round, Opaque

0.06ct Black Diamond, Round, Opaque

2.3 mm (calibrated)

$ 20.53

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1.32ct Purple Spinel, Marquise, VVS-VS
Spinel Product Video (349481)

1.32ct Purple Spinel, Marquise, VVS-VS

9.7 x 5.6 mm

$ 219.12

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1.03ct Purple Spinel, Cushion, VS
Spinel Product Video (725541)

1.03ct Purple Spinel, Cushion, VS

5.8 x 4.7 mm

$ 415.00

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2.85ct Green Cat'S Eye Beryl, Oval, Translucent
Cat's Eye Beryl Product Video (735067)

2.85ct Green Cat'S Eye Beryl, Oval, Translucent

10.1 x 7.5 mm

$ 497.52

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1.02ct Yellow Beryl, Pear Shape, VVS

1.02ct Yellow Beryl, Pear Shape, VVS

9 x 6 mm (calibrated)

$ 22.35

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1.08ct Purple Spinel, Cushion, VVS
Spinel Product Video (744427)

1.08ct Purple Spinel, Cushion, VVS

6.7 x 5.9 mm

$ 107.57

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1.04ct Pink Morganite, Round, VVS-VS

1.04ct Pink Morganite, Round, VVS-VS

7 mm (calibrated)

$ 40.40

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1.89ct Yellow Rutile Topaz, Pear Shape, Transparent

1.89ct Yellow Rutile Topaz, Pear Shape, Transparent

10.8 x 6.2 mm

$ 39.22

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1.19ct Yellow Beryl, Trillion, VS

1.19ct Yellow Beryl, Trillion, VS

8 x 8 mm (calibrated)

$ 28.44

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1.76ctw Multicolor Andalusite, Oval, VS

1.76ctw Multicolor Andalusite, Oval, VS

5 x 3.2 mm

$ 94.02

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1.04ct Purple Spinel, Oval, VS

1.04ct Purple Spinel, Oval, VS

7.4 x 5.5 mm

$ 73.29

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2.06ctw Multicolor Andalusite, Oval, VS

2.06ctw Multicolor Andalusite, Oval, VS

5.2 x 4.2 mm

$ 110.46

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7.36ctw Black Spinel, Round, Opaque

7.36ctw Black Spinel, Round, Opaque

9 mm (calibrated)

$ 32.25

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0.95ct Yellow Morganite, Cushion, VS

0.95ct Yellow Morganite, Cushion, VS

6 x 6 mm (calibrated)

$ 57.25

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1.10ct Purple Sapphire, Cushion, VS
Sapphire Product Video (447843)

1.10ct Purple Sapphire, Cushion, VS

7.3 x 5.1 mm

$ 580.09

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2.06ct Yellow Beryl, Oval, VS

2.06ct Yellow Beryl, Oval, VS

10 x 8 mm (calibrated)

$ 49.24

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0.24ct Brown Color-Change Sapphire, Emerald Cut, VVS

0.24ct Brown Color-Change Sapphire, Emerald Cut, VVS

3.8 x 2.8 mm

$ 19.92

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1.58ct Yellow Beryl, Round, VVS

1.58ct Yellow Beryl, Round, VVS

8 mm (calibrated)

$ 31.47

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4.18ct Pink Morganite, Pear Shape, Transparent

4.18ct Pink Morganite, Pear Shape, Transparent

12 x 9 mm

$ 17.35

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

All good

Posted By DouscheGift in August, 2025
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The website was very easy to use.

Posted By Garnet in January, 2026
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Overall Rating -> 10 star ratings

Web site is very simple to navigate Selection is terrific

Posted By ToRa.62 in April, 2026
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Overall Rating -> 10 star ratings

Very good

Posted By Niska in August, 2025
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Overall Rating -> 10 star ratings

Easy process.

Posted By Crafty Seabee in March, 2026
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Overall Rating -> 8 star ratings

Site worked well and helped me find a rock that matched what I was looking for. Well within budget and I trust it will show up, so that's definitely positive. Not much else to it. Satisfied.

Posted By Big Ricky in May, 2026
Source: Bizrate
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