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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
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0.14ctw White Diamond, Round, VVS-VS

0.14ctw White Diamond, Round, VVS-VS

2.6 mm (calibrated)

$ 254.36

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0.06ct White Diamond, Marquise, VVS
Diamond Product Video (740688)

0.06ct White Diamond, Marquise, VVS

4 x 2 mm (calibrated)

$ 208.54

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0.89ct Orange Morganite, Pear Shape, VS

0.89ct Orange Morganite, Pear Shape, VS

8 x 6 mm (calibrated)

$ 53.63

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3.67ctw Multicolor Andalusite, Round, VS

3.67ctw Multicolor Andalusite, Round, VS

3.2 mm

$ 134.47

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0.79ct Pink Spinel, Cushion, VS

0.79ct Pink Spinel, Cushion, VS

5.6 x 4.8 mm

$ 28.24

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0.05ct Black Diamond, Round, Opaque

0.05ct Black Diamond, Round, Opaque

2.1 mm (calibrated)

$ 39.84

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0.58ct Red Spinel, Cushion, VVS-VS

0.58ct Red Spinel, Cushion, VVS-VS

5.5 x 4.7 mm

$ 48.14

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0.23ct Black Diamond, Round, Opaque

0.23ct Black Diamond, Round, Opaque

3.5 mm (calibrated)

$ 109.41

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1.69ct Pink Morganite, Pear Shape, VS-SI
Morganite Product Video (457467)

1.69ct Pink Morganite, Pear Shape, VS-SI

11.5 x 6.4 mm

$ 140.27

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0.54ct Green Cat'S Eye Alexandrite, Oval, Opaque

0.54ct Green Cat'S Eye Alexandrite, Oval, Opaque

4.7 x 4.3 mm

$ 112.05

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0.74ct Pink Morganite, Pear Shape, VVS-VS

0.74ct Pink Morganite, Pear Shape, VVS-VS

8.7 x 4.4 mm

$ 44.59

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5.84ct White Topaz, Cushion, VVS-VS

5.84ct White Topaz, Cushion, VVS-VS

12 x 10 mm (calibrated)

$ 38.78

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0.67ct Violet Spinel, Cushion, VVS-VS

0.67ct Violet Spinel, Cushion, VVS-VS

5.1 x 4.7 mm

$ 46.71

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0.07ct White Diamond, Marquise, VVS

0.07ct White Diamond, Marquise, VVS

4 x 2 mm (calibrated)

$ 243.29

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0.91ct Yellow Beryl, Cushion, VS

0.91ct Yellow Beryl, Cushion, VS

6 x 6 mm (calibrated)

$ 19.94

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0.69ct Pink Morganite, Pear Shape, VVS-VS

0.69ct Pink Morganite, Pear Shape, VVS-VS

8.6 x 4.5 mm

$ 60.47

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0.13ctw Black Diamond, Square, Opaque

0.13ctw Black Diamond, Square, Opaque

1.9 x 1.9 mm

$ 64.74

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0.12ct Black Diamond, Square, Opaque

0.12ct Black Diamond, Square, Opaque

2.7 x 2.7 mm

$ 59.76

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0.56ct Yellow Beryl, Oval, VVS

0.56ct Yellow Beryl, Oval, VVS

7 x 5 mm (calibrated)

$ 10.69

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1.39ct Yellow Beryl, Trillion, VS

1.39ct Yellow Beryl, Trillion, VS

8 x 8 mm (calibrated)

$ 33.22

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14.78ctw Black Spinel, Round, Opaque

14.78ctw Black Spinel, Round, Opaque

12 mm (calibrated)

$ 48.57

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4.12ct Yellow Rutile Topaz, Pear Shape, Transparent

4.12ct Yellow Rutile Topaz, Pear Shape, Transparent

15.3 x 7.7 mm

$ 85.49

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0.89ct Yellow Morganite, Oval, VVS

0.89ct Yellow Morganite, Oval, VVS

8 x 6 mm (calibrated)

$ 39.00

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0.33ct Pink Morganite, Trillion, VVS-VS

0.33ct Pink Morganite, Trillion, VVS-VS

4.9 x 4.6 mm

$ 14.79

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

Great experience. I can't wait to explore on the website further.

Posted By Kymmie in September, 2025
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Great site for finding specific stones and sizes for individual pieces of jewelry

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Easy to use website

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My whole experience is great.

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I love the products. I've bought them as gifts and people love my gifts

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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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