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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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2.02ct Yellow Citrine, Trillion, VVS-VS

2.02ct Yellow Citrine, Trillion, VVS-VS

9 x 9 mm (calibrated)

$ 10.94

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8.58ct Yellow Rutile Quartz, Round, Translucent

8.58ct Yellow Rutile Quartz, Round, Translucent

15 mm (calibrated)

$ 23.31

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2.10ct Orange Hessonite Garnet, Round, VS

2.10ct Orange Hessonite Garnet, Round, VS

7.5 mm (calibrated)

$ 34.03

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23.78ct Multicolor Jasper, Oval, Opaque

23.78ct Multicolor Jasper, Oval, Opaque

30 x 22 mm (calibrated)

$ 16.14

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5.76ct Multicolor Fire Agate, Trillion, Translucent

5.76ct Multicolor Fire Agate, Trillion, Translucent

17.7 x 10.6 mm

$ 49.54

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32.69ct Multicolor Jasper, Pear Shape, Opaque

32.69ct Multicolor Jasper, Pear Shape, Opaque

30.2 x 25.9 mm

$ 20.41

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1.77ct Violet Amethyst, Marquise, VS

1.77ct Violet Amethyst, Marquise, VS

11.8 x 6 mm

$ 9.69

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1.87ct Orange Moonstone, Square, Translucent

1.87ct Orange Moonstone, Square, Translucent

7 x 7 mm (calibrated)

$ 3.74

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8.96ctw Black Spinel, Trillion, Opaque

8.96ctw Black Spinel, Trillion, Opaque

10 x 10 mm (calibrated)

$ 49.09

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2.40ctw Orange Sunstone, Oval, Translucent

2.40ctw Orange Sunstone, Oval, Translucent

8 x 6 mm (calibrated)

$ 16.73

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3.64ct Brown Cat'S Eye Apatite, Oval, Translucent

3.64ct Brown Cat'S Eye Apatite, Oval, Translucent

10.6 x 7.9 mm

$ 39.88

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21.03ct Red Pyrope Garnet, Oval, IF

21.03ct Red Pyrope Garnet, Oval, IF

16.1 x 14.6 mm

$ 698.20

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0.43ct Blue Kyanite, Round, SI

0.43ct Blue Kyanite, Round, SI

4.2 mm

$ 10.71

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4.38ctw Red Pyrope Garnet, Marquise, VVS

4.38ctw Red Pyrope Garnet, Marquise, VVS

12 x 6 mm

$ 38.39

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2.73ct Multicolor Labradorite, Pear Shape, Translucent

2.73ct Multicolor Labradorite, Pear Shape, Translucent

10 x 7 mm (calibrated)

$ 6.03

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0.23ct Green Kornerupine, Oval, VVS-VS

0.23ct Green Kornerupine, Oval, VVS-VS

4.4 x 3.2 mm

$ 12.60

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1.93ct Orange Hessonite Garnet, Oval, VS

1.93ct Orange Hessonite Garnet, Oval, VS

8.5 x 6.7 mm

$ 35.95

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7.27ctw Violet Amethyst, Oval, Transparent

7.27ctw Violet Amethyst, Oval, Transparent

11 x 9 mm (calibrated)

$ 39.83

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0.98ct Violet Amethyst, Marquise, VS

0.98ct Violet Amethyst, Marquise, VS

10 x 5 mm (calibrated)

$ 6.51

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2.02ct Brown Diamond, Cushion, VS
Diamond Product Video (460458)

2.02ct Brown Diamond, Cushion, VS

6.6 x 6.5 mm

$ 3,380.03

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19.40ctw Brown Tiger'S Eye, Baguette, Opaque

19.40ctw Brown Tiger'S Eye, Baguette, Opaque

16 x 12 mm (calibrated)

$ 19.32

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1.68ctw Red Pyrope Garnet, Heart, VVS-VS

1.68ctw Red Pyrope Garnet, Heart, VVS-VS

6 x 6 mm (calibrated)

$ 12.89

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2.28ctw Orange Hessonite Garnet, Emerald Cut, VS

2.28ctw Orange Hessonite Garnet, Emerald Cut, VS

6.7 x 4.9 mm

$ 34.85

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1.76ctw Orange Sunstone, Round, Translucent

1.76ctw Orange Sunstone, Round, Translucent

6 mm (calibrated)

$ 19.28

View Gem
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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

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

Overall Rating -> 10 star ratings

Found a rock that met my need. Bought it!

Posted By Skot in May, 2026
Source: Bizrate

Overall Rating -> 8 star ratings

I visited several online loose stone shops trying to find rare stones. I finally found one that I've been looking for here, and very satisfied. Looking forward to receive the item in 3 weeks.

Posted By Atsu in December, 2025
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

I have a beautiful emerald I purchased from a company names gemselect and they are awesome! You should try them out?

Posted By Lynn in September, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

All items were delivered on time with all items meeting or exceeding my expectations. Cut, clarity and color were very close to the photos and description.

Posted By Bob D in December, 2025
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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