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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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1.13ct Orange Hessonite Garnet, Oval, VVS-VS

1.13ct Orange Hessonite Garnet, Oval, VVS-VS

7 x 5.6 mm

$ 22.51

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15.43ct Pink Rose Quartz, Oval, Transparent

15.43ct Pink Rose Quartz, Oval, Transparent

18.6 x 14.1 mm

$ 33.81

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1.64ct Gray Sillimanite Cat'S Eye, Oval, Transparent

1.64ct Gray Sillimanite Cat'S Eye, Oval, Transparent

7.7 x 5.4 mm

$ 5.39

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21.42ct Green Amazonite, Fancy, Translucent

21.42ct Green Amazonite, Fancy, Translucent

29.5 x 9.9 mm

$ 11.74

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1.15ct Gray Sillimanite Cat'S Eye, Oval, Transparent

1.15ct Gray Sillimanite Cat'S Eye, Oval, Transparent

7 x 5.3 mm

$ 3.78

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17.93ct Violet Amethyst, Flower Cut, Transparent/Translucent

17.93ct Violet Amethyst, Flower Cut, Transparent/Translucent

17.3 x 17.2 mm

$ 53.58

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5.85ct Violet Amethyst, Pear Shape, VVS-VS

5.85ct Violet Amethyst, Pear Shape, VVS-VS

15 x 10 mm (calibrated)

$ 44.87

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21.02ctw Multicolor Jasper, Pear Shape, Opaque

21.02ctw Multicolor Jasper, Pear Shape, Opaque

24.5 x 15.2 mm

$ 12.35

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2.77ct Violet Amethyst, Trillion, VVS-VS

2.77ct Violet Amethyst, Trillion, VVS-VS

10 x 10 mm (calibrated)

$ 19.31

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18.02ct Multicolor Agate, Oval, Opaque

18.02ct Multicolor Agate, Oval, Opaque

17.1 x 16.1 mm

$ 17.94

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1.20ct Purple Spinel, Cushion, VS

1.20ct Purple Spinel, Cushion, VS

6.4 x 5.5 mm

$ 143.42

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1.12ct Yellow Chrysoberyl, Pear Shape, VVS

1.12ct Yellow Chrysoberyl, Pear Shape, VVS

7.2 x 5.8 mm

$ 131.04

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23.53ct Yellow Calcite, Pear Shape, Translucent

23.53ct Yellow Calcite, Pear Shape, Translucent

38.4 x 17.2 mm

$ 13.48

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0.64ct Blue Kyanite, Round, SI

0.64ct Blue Kyanite, Round, SI

5.2 mm

$ 15.94

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2.93ct Violet Amethyst, Trillion, VVS-VS

2.93ct Violet Amethyst, Trillion, VVS-VS

10 x 10 mm (calibrated)

$ 20.43

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12.63ctw Violet Amethyst, Oval, Transparent

12.63ctw Violet Amethyst, Oval, Transparent

14 x 10 mm (calibrated)

$ 49.95

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2.28ct Purple Rhodolite Garnet, Oval, VS

2.28ct Purple Rhodolite Garnet, Oval, VS

8.4 x 6.3 mm

$ 90.84

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0.56ct Red Pyrope Garnet, Heart, VS

0.56ct Red Pyrope Garnet, Heart, VS

5 x 5 mm (calibrated)

$ 13.94

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0.43ct Orange Citrine, Marquise, VVS-VS

0.43ct Orange Citrine, Marquise, VVS-VS

8 x 4 mm (calibrated)

$ 3.00

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1.10ct Pink Morganite, Pear Shape, VVS-VS

1.10ct Pink Morganite, Pear Shape, VVS-VS

11.5 x 5.9 mm

$ 120.52

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2.04ct Orange Hessonite Garnet, Oval, VS

2.04ct Orange Hessonite Garnet, Oval, VS

8.2 x 6.8 mm

$ 29.05

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2.74ct Blue Aquamarine, Trillion, VS
Aquamarine Product Video (757976)

2.74ct Blue Aquamarine, Trillion, VS

10 x 10 mm (calibrated)

$ 274.00

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0.97ctw Green Peridot, Oval, VS

0.97ctw Green Peridot, Oval, VS

6 x 4 mm (calibrated)

$ 10.62

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1.99ctw Yellow Citrine, Square, VVS-VS

1.99ctw Yellow Citrine, Square, VVS-VS

6 x 6 mm (calibrated)

$ 15.26

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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 -> 9 star ratings

They have literally everything on this website! The prices are also pretty good, I was able to find plenty of nice stones that I could afford!

Posted By JC in March, 2026
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

It was great! Great photos

Posted By Marcia in June, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

They have a wonderful selection of gems of all sorts, shapes, cuts, and quality. I am very particular about the quality of stones I buy, and found many with VVS clarity and excellent cut and polish. I am thrilled with each of the stones I purchased, and would definitely recommend GemSelect to everyone.

Posted By Debsarabs in February, 2026
Source: Bizrate

Overall Rating -> 8 star ratings

It was fine

Posted By Na in April, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I love the ability to choose from many options of shapes, gemstone type, color, and so forth. It is fun!

Posted By Geof in November, 2025
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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