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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
Single
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41.84ct Multicolor Jasper, Baguette, Opaque

41.84ct Multicolor Jasper, Baguette, Opaque

30 x 22 mm (calibrated)

$ 25.66

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2.70ctw Green Peridot, Round, VVS-VS

2.70ctw Green Peridot, Round, VVS-VS

5 mm (calibrated)

$ 44.37

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2.69ct Violet Amethyst, Trillion, VVS-VS

2.69ct Violet Amethyst, Trillion, VVS-VS

10 x 10 mm (calibrated)

$ 18.76

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1.66ct Orange Hessonite Garnet, Emerald Cut, VS-SI

1.66ct Orange Hessonite Garnet, Emerald Cut, VS-SI

6 x 6 mm (calibrated)

$ 30.92

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3.37ctw Brown Smoky Quartz, Round, VS

3.37ctw Brown Smoky Quartz, Round, VS

8 mm (calibrated)

$ 6.71

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2.57ct Yellow Citrine, Oval, VVS-VS

2.57ct Yellow Citrine, Oval, VVS-VS

10 x 8 mm (calibrated)

$ 14.09

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2.76ctw Red Pyrope Garnet, Emerald Cut, VVS-VS

2.76ctw Red Pyrope Garnet, Emerald Cut, VVS-VS

6 x 4 mm (calibrated)

$ 16.04

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12.64ctw Violet Amethyst, Oval, Transparent

12.64ctw Violet Amethyst, Oval, Transparent

13 x 9 mm (calibrated)

$ 69.24

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4.05ct Yellow Rutile Quartz, Oval, Transparent

4.05ct Yellow Rutile Quartz, Oval, Transparent

13 x 9 mm (calibrated)

$ 11.09

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5.27ct Yellow Citrine, Oval, VVS

5.27ct Yellow Citrine, Oval, VVS

14 x 10 mm (calibrated)

$ 36.74

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6.62ct Purple Kunzite, Emerald Cut, VVS-VS
Kunzite Product Video (691519)

6.62ct Purple Kunzite, Emerald Cut, VVS-VS

10.6 x 8.6 mm

$ 145.06

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1.26ctw Red Pyrope Garnet, Heart, VS

1.26ctw Red Pyrope Garnet, Heart, VS

5 x 5 mm (calibrated)

$ 33.13

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2.75ct Green Fluorite, Pear Shape, Transparent

2.75ct Green Fluorite, Pear Shape, Transparent

10 x 7 mm (calibrated)

$ 11.29

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1.22ct Green Tourmaline, Emerald Cut, VVS-VS

1.22ct Green Tourmaline, Emerald Cut, VVS-VS

18.6 x 3 mm

$ 29.17

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47.67ct Multicolor Jasper, Oval, Opaque

47.67ct Multicolor Jasper, Oval, Opaque

38.3 x 25.9 mm

$ 39.18

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15.76ct White Rainbow Moonstone, Pear Shape, Transparent

15.76ct White Rainbow Moonstone, Pear Shape, Transparent

22 x 13.7 mm

$ 235.45

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0.97ctw Red Pyrope Garnet, Square, VS

0.97ctw Red Pyrope Garnet, Square, VS

4 x 4 mm (calibrated)

$ 7.44

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0.64ct Orange Fire Opal, Oval, Transparent

0.64ct Orange Fire Opal, Oval, Transparent

8 x 6 mm (calibrated)

$ 18.44

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7.18ct Turquoise Hemimorphite Druzy, Fancy, Opaque
Hemimorphite Druzy Product Video (439478)

7.18ct Turquoise Hemimorphite Druzy, Fancy, Opaque

15.2 x 12.5 mm

$ 117.99

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1.56ct Blue Aquamarine, Trillion, VS
Aquamarine Product Video (757088)

1.56ct Blue Aquamarine, Trillion, VS

8 x 8 mm (calibrated)

$ 187.20

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0.25ct Orange Spessartite Garnet, Oval, VS

0.25ct Orange Spessartite Garnet, Oval, VS

4 x 3.1 mm

$ 8.72

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9.31ct Brown Smoky Quartz, Round, VVS

9.31ct Brown Smoky Quartz, Round, VVS

14 mm (calibrated)

$ 18.26

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1.15ct Pink Tourmaline, Round, Transparent

1.15ct Pink Tourmaline, Round, Transparent

6 mm (calibrated)

$ 17.50

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0.69ct Orange Hessonite Garnet, Pear Shape, VS-SI

0.69ct Orange Hessonite Garnet, Pear Shape, VS-SI

6.5 x 4.6 mm

$ 15.12

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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 -> 7 star ratings

easy interface for a pricless buy

Posted By Zeak in May, 2026
Source: Bizrate

Overall Rating -> 8 star ratings

Good prices

Posted By TRM in October, 2025
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Overall Rating -> 9 star ratings

I loved the selection of gemstones you have a to z

Posted By James in May, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

The website was easy to use and informative of the selection of stones it has. I quickly found the right stone for me.

Posted By Guero in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Absolutely love the website, selection and products. Can you guys add a gemstones with inclusions tab. I like those it'd be nice to have them all in one place but i do understand it would be alot of work to go through and categorize them. Thank you anyways

Posted By The homie edgar in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

hassle free experience.

Posted By Jhidron in October, 2025
Source: Bizrate
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