90,000+Happy Customers
20+Years
WorldwideShipping
Cart
Free Report Included
Worldwide Shipping
30 Day Returns
Help Center Shipping Payment and Checkout Returns Certificates Contact Us
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
Pairs
Lots
Faceted
Cabochons
Clear All
2.32ctw Yellow Citrine, Pear Shape, VVS-VS

2.32ctw Yellow Citrine, Pear Shape, VVS-VS

9 x 6 mm (calibrated)

$ 12.71

View Gem
3.97ct Orange Sunstone, Round, Translucent

3.97ct Orange Sunstone, Round, Translucent

10 mm (calibrated)

$ 19.28

View Gem
7.75ct Multicolor Coral, Oval, Translucent

7.75ct Multicolor Coral, Oval, Translucent

15.1 x 12.7 mm

$ 22.31

View Gem
19.54ct Multicolor Jasper, Oval, Opaque

19.54ct Multicolor Jasper, Oval, Opaque

25 x 18 mm (calibrated)

$ 32.11

View Gem
1.02ct Orange Hessonite Garnet, Oval, VS

1.02ct Orange Hessonite Garnet, Oval, VS

7.2 x 5.8 mm

$ 19.31

View Gem
1.27ct Orange Hessonite Garnet, Emerald Cut, VS

1.27ct Orange Hessonite Garnet, Emerald Cut, VS

7 x 5 mm (calibrated)

$ 24.04

View Gem
0.21ct Blue Iolite, Emerald Cut, VS

0.21ct Blue Iolite, Emerald Cut, VS

5 x 3 mm (calibrated)

$ 8.37

View Gem
8.76ctw White Topaz, Heart, VS

8.76ctw White Topaz, Heart, VS

10 x 10 mm (calibrated)

$ 72.71

View Gem
18.80ct Brown Moonstone, Oval, Translucent

18.80ct Brown Moonstone, Oval, Translucent

21.6 x 16 mm

$ 41.19

View Gem
1.94ct Yellow Rutile Topaz, Pear Shape, Transparent

1.94ct Yellow Rutile Topaz, Pear Shape, Transparent

9 x 7 mm (calibrated)

$ 40.26

View Gem
10.22ct White Rainbow Moonstone, Pear Shape, Transparent

10.22ct White Rainbow Moonstone, Pear Shape, Transparent

17 x 11.7 mm

$ 183.22

View Gem
17.80ct Green Jadeite, Oval, Translucent

17.80ct Green Jadeite, Oval, Translucent

20.8 x 16.5 mm

$ 29.25

View Gem
1.79ct Orange Hessonite Garnet, Cushion, VS

1.79ct Orange Hessonite Garnet, Cushion, VS

7 x 7 mm (calibrated)

$ 27.35

View Gem
2.63ct Orange Hessonite Garnet, Oval, VS-SI

2.63ct Orange Hessonite Garnet, Oval, VS-SI

9.1 x 7.6 mm

$ 57.63

View Gem
1.75ct Violet Amethyst, Square, VVS-VS

1.75ct Violet Amethyst, Square, VVS-VS

7 x 7 mm (calibrated)

$ 13.94

View Gem
1.11ct Purple Rhodolite Garnet, Oval, VS

1.11ct Purple Rhodolite Garnet, Oval, VS

6.6 x 5.2 mm

$ 38.69

View Gem
1.15ct Blue Aquamarine, Trillion, VS

1.15ct Blue Aquamarine, Trillion, VS

7 x 7 mm (calibrated)

$ 138.00

View Gem
2.15ct Multicolor Spectrolite, Oval, Opaque

2.15ct Multicolor Spectrolite, Oval, Opaque

10 x 8 mm (calibrated)

$ 8.92

View Gem
1.67ct Violet Amethyst, Trillion, VS

1.67ct Violet Amethyst, Trillion, VS

8 x 8 mm (calibrated)

$ 11.04

View Gem
2.56ct Yellow Citrine, Square, VS

2.56ct Yellow Citrine, Square, VS

8 x 8 mm (calibrated)

$ 16.97

View Gem
27.10ct Multicolor Jasper, Pear Shape, Opaque

27.10ct Multicolor Jasper, Pear Shape, Opaque

30 x 22 mm (calibrated)

$ 22.40

View Gem
1.44ct Green Tourmaline, Emerald Cut, VVS-VS

1.44ct Green Tourmaline, Emerald Cut, VVS-VS

16 x 3.2 mm

$ 48.60

View Gem
0.05ct Black Diamond, Round, Opaque

0.05ct Black Diamond, Round, Opaque

2.2 mm (calibrated)

$ 16.28

View Gem
2.89ctw Red Pyrope Garnet, Square, VS

2.89ctw Red Pyrope Garnet, Square, VS

5 x 5 mm (calibrated)

$ 22.16

View Gem
1 2 3
...
137
Choose Page
1 - 1882

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 -> 9 star ratings

Will know more once order received

Posted By Jim in September, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

selection was broad and the check out was quick. Great site

Posted By JC Karl in September, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I had a very easy time navigating the web page and using filters to find what I was looking for. The varied selection was nice to see and pricing is clear and fair.

Posted By Mattick in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

No problems. I had a minor address issue in the past and someone got back to me very quickly and we resolved the issue satisfactorily. I appreciated the quick, concerned response. So important when buyer/seller are so far apart in distance. Thank you Gem Select. Keep up the good work!

Posted By Orphanboy in December, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

It was great!

Posted By Annie in September, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Easy and good price

Posted By Bry_guy in March, 2026
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
Enlarged Gemstone Image