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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

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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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0.16ct Black Diamond, Square, Opaque

0.16ct Black Diamond, Square, Opaque

2.7 x 2.5 mm

$ 79.68

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10.23ct Brown Smoky Quartz, Emerald Cut, VVS-VS

10.23ct Brown Smoky Quartz, Emerald Cut, VVS-VS

13 x 13 mm (calibrated)

$ 20.06

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0.22ct Black Diamond, Round, Opaque

0.22ct Black Diamond, Round, Opaque

3.5 mm (calibrated)

$ 104.66

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1.67ctw Red Rhodolite Garnet, Square, VS

1.67ctw Red Rhodolite Garnet, Square, VS

5 x 5 mm (calibrated)

$ 14.61

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38.84ct Violet Amethyst, Oval, VVS
Amethyst Product Video (753786)

38.84ct Violet Amethyst, Oval, VVS

25 x 18 mm (calibrated)

$ 322.37

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0.93ct Pink Tourmaline, Round, Transparent

0.93ct Pink Tourmaline, Round, Transparent

6 mm (calibrated)

$ 15.42

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39.98ct Multicolor Jasper, Oval, Opaque

39.98ct Multicolor Jasper, Oval, Opaque

35.2 x 25.7 mm

$ 21.90

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45.45ctw Gray Hematite, Round, Opaque

45.45ctw Gray Hematite, Round, Opaque

17 mm (calibrated)

$ 44.32

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0.56ct White Topaz, Oval, VVS

0.56ct White Topaz, Oval, VVS

6 x 4.2 mm

$ 3.90

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19.50ct Multicolor Jasper, Fancy, Opaque

19.50ct Multicolor Jasper, Fancy, Opaque

35.9 x 14.9 mm

$ 21.36

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4.93ct Brown Star Moonstone, Oval, Translucent

4.93ct Brown Star Moonstone, Oval, Translucent

12 x 8.4 mm

$ 21.60

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0.93ct Yellow Beryl, Oval, VVS

0.93ct Yellow Beryl, Oval, VVS

8 x 6 mm (calibrated)

$ 18.53

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38.41ct Multicolor Rhodochrosite, Pear Shape, Translucent

38.41ct Multicolor Rhodochrosite, Pear Shape, Translucent

38.3 x 15.3 mm

$ 65.64

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29.40ct Blue Chalcedony, Cushion, Opaque

29.40ct Blue Chalcedony, Cushion, Opaque

27 x 20 mm (calibrated)

$ 17.57

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2.08ctw Yellow Tourmaline, Oval, VS

2.08ctw Yellow Tourmaline, Oval, VS

7.8 x 5.6 mm

$ 82.87

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4.24ct Turquoise Fluorite, Oval, Transparent

4.24ct Turquoise Fluorite, Oval, Transparent

11 x 9 mm (calibrated)

$ 17.44

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7.37ct Yellow Rutile Quartz, Pear Shape, Translucent

7.37ct Yellow Rutile Quartz, Pear Shape, Translucent

15.1 x 11 mm

$ 20.03

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0.70ct Orange Hessonite Garnet, Pear Shape, VS-SI

0.70ct Orange Hessonite Garnet, Pear Shape, VS-SI

6.8 x 4.7 mm

$ 15.34

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51.12ct Multicolor Tiger'S Eye Matrix, Fancy, Opaque

51.12ct Multicolor Tiger'S Eye Matrix, Fancy, Opaque

33.9 x 21.9 mm

$ 23.42

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1.00ctw Green Peridot, Oval, VS

1.00ctw Green Peridot, Oval, VS

6 x 4 mm (calibrated)

$ 10.96

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9.64ct Brown Rutile Quartz, Pear Shape, Transparent

9.64ct Brown Rutile Quartz, Pear Shape, Transparent

16 x 12 mm (calibrated)

$ 26.19

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0.99ct Purple Spinel, Pear Shape, VS

0.99ct Purple Spinel, Pear Shape, VS

8 x 6 mm (calibrated)

$ 81.36

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3.51ct Yellow Citrine, Emerald Cut, VS

3.51ct Yellow Citrine, Emerald Cut, VS

11 x 9 mm (calibrated)

$ 23.54

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10.65ct Black Tourmaline, Oval, Opaque

10.65ct Black Tourmaline, Oval, Opaque

15.1 x 12.4 mm

$ 53.04

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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!

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this site is awesome. I was able to look at the products think about purchasing and come back and find the same products. With the amount of inventory gem select has. Its awesome to be able to filter the way that they allow you too.

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It was great

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I enjoyed the enormous amount of knowledge on your site. It helped me choose the gems I purchased.

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Overall Rating -> 10 star ratings

Good selection prices are reasonable!

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Overall Rating -> 10 star ratings

The website was very easy to use.

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Overall Rating -> 10 star ratings

I feel Gemselect is a trustworthy company to buy from

Posted By Becky in October, 2025
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