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
2.41ct Yellow Citrine, Oval, VVS-VS

2.41ct Yellow Citrine, Oval, VVS-VS

10 x 8 mm (calibrated)

$ 18.48

View Gem
7.13ct Multicolor Agate, Round, Translucent

7.13ct Multicolor Agate, Round, Translucent

11 mm (calibrated)

$ 5.68

View Gem
20.78ctw Brown Rutile Quartz, Sphere / Ball, Transparent

20.78ctw Brown Rutile Quartz, Sphere / Ball, Transparent

11 mm (calibrated)

$ 17.25

View Gem
0.58ct Violet Amethyst, Emerald Cut, VS

0.58ct Violet Amethyst, Emerald Cut, VS

6 x 4 mm (calibrated)

$ 3.37

View Gem
2.51ctw Yellow Citrine, Round, VVS-VS

2.51ctw Yellow Citrine, Round, VVS-VS

7.5 mm (calibrated)

$ 16.67

View Gem
33.38ctw Multicolor Fossil Coral, Cushion, Opaque

33.38ctw Multicolor Fossil Coral, Cushion, Opaque

20.3 x 13.2 mm

$ 54.86

View Gem
1.36ctw Red Pyrope Garnet, Square, VVS-VS

1.36ctw Red Pyrope Garnet, Square, VVS-VS

5 x 5 mm (calibrated)

$ 10.42

View Gem
1.73ct Pink Strawberry Quartz, Round, Translucent

1.73ct Pink Strawberry Quartz, Round, Translucent

8 mm (calibrated)

$ 13.26

View Gem
1.42ctw Yellow Citrine, Heart, VVS-VS

1.42ctw Yellow Citrine, Heart, VVS-VS

6 x 6 mm (calibrated)

$ 11.31

View Gem
1.80ct Yellow Beryl, Trillion, VVS

1.80ct Yellow Beryl, Trillion, VVS

9 x 9 mm (calibrated)

$ 39.44

View Gem
5.39ctw Pink Rose Quartz, Emerald Cut, Transparent

5.39ctw Pink Rose Quartz, Emerald Cut, Transparent

8.7 x 8.6 mm

$ 26.84

View Gem
9.60ctw Pink Strawberry Quartz, Oval, Translucent

9.60ctw Pink Strawberry Quartz, Oval, Translucent

12 x 10 mm (calibrated)

$ 147.25

View Gem
21.47ct Yellow Rutile Quartz, Pear Shape, Transparent

21.47ct Yellow Rutile Quartz, Pear Shape, Transparent

25.3 x 15.5 mm

$ 23.52

View Gem
43.95ct Multicolor Rainbow Moonstone, Fancy, Opaque

43.95ct Multicolor Rainbow Moonstone, Fancy, Opaque

45.1 x 11.3 mm

$ 4.38

View Gem
3.11ctw Orange Sunstone, Oval, Translucent

3.11ctw Orange Sunstone, Oval, Translucent

7 x 5 mm (calibrated)

$ 17.83

View Gem
12.78ct Brown Tiger'S Eye, Baguette, Opaque

12.78ct Brown Tiger'S Eye, Baguette, Opaque

18 x 13 mm (calibrated)

$ 12.73

View Gem
1.87ct Multicolor Pietersite, Marquise, Opaque

1.87ct Multicolor Pietersite, Marquise, Opaque

13.4 x 5 mm

$ 4.52

View Gem
1.08ctw Green Kornerupine, Square, VVS-VS

1.08ctw Green Kornerupine, Square, VVS-VS

4.4 x 4.3 mm

$ 47.33

View Gem
3.76ctw Orange Hessonite Garnet, Emerald Cut, VS

3.76ctw Orange Hessonite Garnet, Emerald Cut, VS

6.6 x 4.8 mm

$ 82.39

View Gem
1.02ct Orange Hessonite Garnet, Round, VVS-VS

1.02ct Orange Hessonite Garnet, Round, VVS-VS

5.5 mm (calibrated)

$ 15.59

View Gem
2.27ctw Multicolor Andalusite, Round, VS-SI
Andalusite Product Video (206015)

2.27ctw Multicolor Andalusite, Round, VS-SI

4 mm (calibrated)

$ 111.92

View Gem
1.69ct Orange Hessonite Garnet, Emerald Cut, VS-SI

1.69ct Orange Hessonite Garnet, Emerald Cut, VS-SI

6 x 6 mm (calibrated)

$ 31.47

View Gem
4.13ct Green Chrysoprase, Oval, Opaque

4.13ct Green Chrysoprase, Oval, Opaque

10.6 x 10 mm

$ 51.42

View Gem
5.52ct Multicolor Opal, Oval, Translucent

5.52ct Multicolor Opal, Oval, Translucent

14.6 x 10.5 mm

$ 137.45

View Gem
1 2 3
...
110
Choose Page
1 - 1857

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

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.

Posted By Tommyp in November, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

I've made several purchases over the last 8 years and I've never been less than happy with any of them.

Posted By Jess in July, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

The process was pleasant, I chose to purchase the stone traditional to the month of March as it is the month in which I was born.

Posted By Maharishi in June, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Great website, easy to navigate, and loads quickly. Have bought here before, very pleased!

Posted By SallyO in February, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Ia've been searching for a source to get my gemstones for awhile now and was very happy to come across this website. Amazing variety for any income.

Posted By Tarah in August, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

The purchasing process is fairly quick and straightforward and for me user friendly so it probably took more or less than 3 minutes to purchase and pay for the items. I wish there was a discount offer for multiple items to encourage us buyers to purchase more an incentive and add more sales in your end. Besides that, it's been a great purchasing experience and will continue to shop as I am a repeat customer and have bought from your store many times before. Thank you.

Posted By Emmanuel in October, 2025
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
Enlarged Gemstone Image