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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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2.13ct Orange Hessonite Garnet, Cushion, VS-SI

2.13ct Orange Hessonite Garnet, Cushion, VS-SI

7 x 7 mm (calibrated)

$ 34.51

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13.97ctw Black Spinel, Round, Opaque

13.97ctw Black Spinel, Round, Opaque

12 mm (calibrated)

$ 45.92

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62.92ctw Multicolor Fluorite, Oval, Transparent
Fluorite Product Video (744516)

62.92ctw Multicolor Fluorite, Oval, Transparent

35.9 x 14.3 mm

$ 261.12

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4.19ctw Yellow Citrine, Oval, VVS-VS

4.19ctw Yellow Citrine, Oval, VVS-VS

10 x 8 mm (calibrated)

$ 27.54

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2.26ct Green Peridot, Cushion, VS

2.26ct Green Peridot, Cushion, VS

8.1 x 7.2 mm

$ 88.98

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0.71ct Yellow Citrine, Heart, VVS-VS

0.71ct Yellow Citrine, Heart, VVS-VS

6 x 6 mm (calibrated)

$ 4.95

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4.91ct Multicolor Quartz With Marcasite, Marquise, Opaque

4.91ct Multicolor Quartz With Marcasite, Marquise, Opaque

21.8 x 6.8 mm

$ 26.90

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1.37ct Pink Morganite, Pear Shape, VS

1.37ct Pink Morganite, Pear Shape, VS

10 x 5.8 mm

$ 105.07

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1.10ct Yellow Beryl, Cushion, VS

1.10ct Yellow Beryl, Cushion, VS

8 x 6 mm (calibrated)

$ 26.29

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2.29ct Orange Moonstone, Cushion, Translucent

2.29ct Orange Moonstone, Cushion, Translucent

9 x 7 mm (calibrated)

$ 4.57

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2.37ct Orange Sunstone, Oval, Translucent

2.37ct Orange Sunstone, Oval, Translucent

10.3 x 8.4 mm

$ 14.16

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59.30ct Multicolor Rhodonite, Oval, Opaque

59.30ct Multicolor Rhodonite, Oval, Opaque

41.5 x 22.9 mm

$ 49.22

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23.51ct Violet Amethyst, Emerald Cut, VVS-VS

23.51ct Violet Amethyst, Emerald Cut, VVS-VS

20 x 15 mm (calibrated)

$ 163.91

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1.65ctw Green Demantoid Garnet, Oval, VS

1.65ctw Green Demantoid Garnet, Oval, VS

4.9 x 3.8 mm

$ 180.77

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4.83ct Turquoise Grandidierite, Oval, Translucent
Grandidierite Product Video (614742)

4.83ct Turquoise Grandidierite, Oval, Translucent

12 x 10 mm (calibrated)

$ 139.06

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27.76ct Brown Tiger'S Eye, Oval, Opaque

27.76ct Brown Tiger'S Eye, Oval, Opaque

25.5 x 18.8 mm

$ 23.72

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2.46ct Multicolor Labradorite, Baguette, Translucent

2.46ct Multicolor Labradorite, Baguette, Translucent

8 x 6 mm (calibrated)

$ 5.39

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0.77ct Pink Malaya Garnet, Round, VS

0.77ct Pink Malaya Garnet, Round, VS

5.8 mm

$ 33.75

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4.84ct Turquoise Fluorite, Pear Shape, Transparent

4.84ct Turquoise Fluorite, Pear Shape, Transparent

11 x 11 mm (calibrated)

$ 20.63

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1.83ct Green Sphene, Oval, Transparent

1.83ct Green Sphene, Oval, Transparent

7.3 x 6.6 mm

$ 9.11

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1.36ct Brown Color-Change Garnet, Oval, VS

1.36ct Brown Color-Change Garnet, Oval, VS

6.6 x 5.5 mm

$ 108.66

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2.28ct Yellow Beryl, Oval, VS

2.28ct Yellow Beryl, Oval, VS

10 x 8 mm (calibrated)

$ 45.42

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9.30ct Pink Rose Quartz, Emerald Cut, Transparent

9.30ct Pink Rose Quartz, Emerald Cut, Transparent

12 x 12 mm (calibrated)

$ 50.95

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0.36ct Pink Morganite, Oval, VS-SI

0.36ct Pink Morganite, Oval, VS-SI

5.9 x 4.3 mm

$ 14.94

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

The citrine gems are beautiful. I appreciated that each stone was individually shown on the website so I could see exactly what I was getting. No mystery person selecting random stones for me. The documentation included with each gem was high quality as well. Great price and arrived as expected.

Posted By Jen in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Very good

Posted By Ceil in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Had a great experience and the prices are great

Posted By BuBx99 in November, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Enjoy viewing the selections. Excellent product

Posted By ToRa.62 in April, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

The gem I selected was the right size and matched exactly other gems on the bracelet. This greatly pleased me. The picture and color exactly matched the delivery.

Posted By Sam in September, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

My experience has always been fantastic. Today I saved 6 gems to email a customer looking for a particular color blend to fit into an east west setting, so her options were limited, but we found one she wanted, deleted all the others in the cart and order the gem she selected. It was helpful to be able to put them in the cart so I could save them until she selected the one she wanted without having to research all of them again.

Posted By RJ in January, 2026
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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