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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
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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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5.90ct Brown Smoky Quartz, Emerald Cut, VVS

5.90ct Brown Smoky Quartz, Emerald Cut, VVS

10.4 x 10.3 mm

$ 32.32

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2.48ct Pink Morganite, Pear Shape, VVS-VS

2.48ct Pink Morganite, Pear Shape, VVS-VS

13.1 x 7.1 mm

$ 102.92

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22.79ct Gray Hematite, Baguette, Opaque

22.79ct Gray Hematite, Baguette, Opaque

20.2 x 14 mm

$ 20.97

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1.12ct Pink Strawberry Quartz, Oval, Translucent

1.12ct Pink Strawberry Quartz, Oval, Translucent

8 x 6 mm (calibrated)

$ 14.15

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2.32ct Orange Hessonite Garnet, Emerald Cut, VS-SI
Hessonite Garnet Product Video (544025)

2.32ct Orange Hessonite Garnet, Emerald Cut, VS-SI

8.1 x 6.3 mm

$ 38.74

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2.78ct Yellow Beryl, Oval, VVS

2.78ct Yellow Beryl, Oval, VVS

11 x 9 mm (calibrated)

$ 60.91

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1.37ct Yellow Color-Change Diaspore, Emerald Cut, VVS-VS

1.37ct Yellow Color-Change Diaspore, Emerald Cut, VVS-VS

8 x 5 mm (calibrated)

$ 71.68

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0.70ct Green Peridot, Marquise, VS

0.70ct Green Peridot, Marquise, VS

8 x 4 mm (calibrated)

$ 11.16

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2.47ct Pink Strawberry Quartz, Oval, Transparent

2.47ct Pink Strawberry Quartz, Oval, Transparent

9 x 7 mm (calibrated)

$ 12.30

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1.54ct Green Sphene, Oval, VS-SI

1.54ct Green Sphene, Oval, VS-SI

8.4 x 6.3 mm

$ 72.55

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11.48ct White Dendritic Agate, Pear Shape, Translucent

11.48ct White Dendritic Agate, Pear Shape, Translucent

22.5 x 13.5 mm

$ 22.87

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1.67ct Orange Zircon, Round, VS

1.67ct Orange Zircon, Round, VS

6.5 mm (calibrated)

$ 36.59

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16.74ct Multicolor Jasper, Pear Shape, Opaque

16.74ct Multicolor Jasper, Pear Shape, Opaque

22.5 x 17.8 mm

$ 10.45

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0.93ct Orange Sunstone, Oval, Translucent

0.93ct Orange Sunstone, Oval, Translucent

8 x 6 mm (calibrated)

$ 6.48

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3.38ctw Orange Citrine, Pear Shape, VVS-VS

3.38ctw Orange Citrine, Pear Shape, VVS-VS

10 x 7 mm (calibrated)

$ 28.05

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2.08ctw Red Pyrope Garnet, Oval, VVS-VS

2.08ctw Red Pyrope Garnet, Oval, VVS-VS

7 x 5 mm (calibrated)

$ 18.99

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2.14ct Yellow Apatite, Emerald Cut, VVS-VS

2.14ct Yellow Apatite, Emerald Cut, VVS-VS

7.6 x 7.3 mm

$ 87.61

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1.42ct Yellow Color-Change Diaspore, Baguette, VS

1.42ct Yellow Color-Change Diaspore, Baguette, VS

9.4 x 4.6 mm

$ 73.97

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2.49ctw White Rainbow Moonstone, Square, Transparent

2.49ctw White Rainbow Moonstone, Square, Transparent

2.9 x 2.9 mm

$ 35.76

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36.44ct Brown Tiger'S Eye, Fancy, Opaque

36.44ct Brown Tiger'S Eye, Fancy, Opaque

37.9 x 10.8 mm

$ 10.89

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0.96ct Blue Kyanite, Oval, VS

0.96ct Blue Kyanite, Oval, VS

7 x 5 mm (calibrated)

$ 23.90

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0.85ct Red Fire Opal, Oval, Translucent

0.85ct Red Fire Opal, Oval, Translucent

7.3 x 6.2 mm

$ 29.77

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21.29ct Blue Turquoise, Oval, Opaque

21.29ct Blue Turquoise, Oval, Opaque

22.7 x 15.4 mm

$ 64.04

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0.95ct Green Tourmaline, Round, Transparent

0.95ct Green Tourmaline, Round, Transparent

6 mm (calibrated)

$ 19.71

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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 -> 10 star ratings

Filters need to be improved but rest of website is great

Posted By Rock hound in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

My experience has always been fantastic. Today I saved 6 gems to email a customer looking for a particular color blend to fit into an east west setting, so her options were limited, but we found one she wanted, deleted all the others in the cart and order the gem she selected. It was helpful to be able to put them in the cart so I could save them until she selected the one she wanted without having to research all of them again.

Posted By RJ in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Great prices!!! High quality gemstones.

Posted By Ricky in October, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

My experience was done with ease

Posted By Barb in October, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

It was fine . Wish there had been more round stones to select from

Posted By Emm in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Absolutely love the website, selection and products. Can you guys add a gemstones with inclusions tab. I like those it'd be nice to have them all in one place but i do understand it would be alot of work to go through and categorize them. Thank you anyways

Posted By The homie edgar in December, 2025
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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