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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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2.07ct Orange Hessonite Garnet, Oval, VS

2.07ct Orange Hessonite Garnet, Oval, VS

8.4 x 6.8 mm

$ 32.67

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3.65ct Pink Strawberry Quartz, Oval, Transparent

3.65ct Pink Strawberry Quartz, Oval, Transparent

11 x 9 mm (calibrated)

$ 27.37

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1.06ctw Green Peridot, Marquise, VVS-VS

1.06ctw Green Peridot, Marquise, VVS-VS

7.9 x 4 mm

$ 9.30

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0.88ct Yellow Beryl, Trillion, VVS

0.88ct Yellow Beryl, Trillion, VVS

7 x 7 mm (calibrated)

$ 17.53

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1.64ctw Green Peridot, Oval, VVS-VS

1.64ctw Green Peridot, Oval, VVS-VS

7 x 5 mm (calibrated)

$ 22.87

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0.82ct Yellow Morganite, Cushion, VS

0.82ct Yellow Morganite, Cushion, VS

5.8 x 5.7 mm

$ 49.41

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243.58ct Pink Rose Quartz, Oval, Transparent
Rose Quartz Product Video (522446)

243.58ct Pink Rose Quartz, Oval, Transparent

42.9 x 36 mm

$ 533.74

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34.04ct White Dendritic Agate, Fancy, Opaque

34.04ct White Dendritic Agate, Fancy, Opaque

33.5 x 20.8 mm

$ 23.74

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2.04ct Blue Kyanite, Oval, SI

2.04ct Blue Kyanite, Oval, SI

8 x 6 mm (calibrated)

$ 42.47

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1.02ct Blue Kyanite, Oval, VS-SI

1.02ct Blue Kyanite, Oval, VS-SI

7 x 5 mm (calibrated)

$ 21.23

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27.50ct Violet Lepidolite, Fancy, Opaque

27.50ct Violet Lepidolite, Fancy, Opaque

39.7 x 8.1 mm

$ 8.22

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2.28ct Orange Hessonite Garnet, Oval, VS

2.28ct Orange Hessonite Garnet, Oval, VS

9 x 7 mm (calibrated)

$ 40.94

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2.54ct Orange Hessonite Garnet, Oval, VS-SI

2.54ct Orange Hessonite Garnet, Oval, VS-SI

9.1 x 7.5 mm

$ 44.83

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31.30ct Yellow Quartz With Marcasite, Fancy, Transparent

31.30ct Yellow Quartz With Marcasite, Fancy, Transparent

43.8 x 17.2 mm

$ 171.46

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1.76ctw Orange Moonstone, Trillion, Translucent

1.76ctw Orange Moonstone, Trillion, Translucent

6 x 6 mm (calibrated)

$ 3.53

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12.64ct Brown Smoky Quartz, Round, VVS-VS

12.64ct Brown Smoky Quartz, Round, VVS-VS

17 mm (calibrated)

$ 20.77

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0.93ct Orange Zircon, Oval, VVS-VS

0.93ct Orange Zircon, Oval, VVS-VS

6 x 4 mm (calibrated)

$ 13.89

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1.35ct Purple Sapphire, Cushion, VS
Sapphire Product Video (447819)

1.35ct Purple Sapphire, Cushion, VS

7.5 x 5.6 mm

$ 711.93

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3.88ctw Red Pyrope Garnet, Marquise, VVS-VS

3.88ctw Red Pyrope Garnet, Marquise, VVS-VS

12.2 x 6.1 mm

$ 31.99

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75.60ct Multicolor Jasper, Cushion, Opaque

75.60ct Multicolor Jasper, Cushion, Opaque

37.9 x 31.4 mm

$ 43.67

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3.01ctw Brown Smoky Quartz, Round, VS

3.01ctw Brown Smoky Quartz, Round, VS

8 mm (calibrated)

$ 13.19

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0.91ct Yellow Zircon, Oval, VVS

0.91ct Yellow Zircon, Oval, VVS

6 x 4.7 mm

$ 13.60

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1.92ct Yellow Citrine, Oval, VVS-VS

1.92ct Yellow Citrine, Oval, VVS-VS

10.5 x 7.6 mm

$ 14.72

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1.34ct Green Tourmaline, Oval, VVS-VS

1.34ct Green Tourmaline, Oval, VVS-VS

6.6 x 6 mm

$ 155.71

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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

My experience was done with ease

Posted By Barb in October, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

Nothing bad to report. Everything is as expected. The gems and the price are all very good.

Posted By Dafanatic in August, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

Everything was good, the purchase was what I expected and what they show is what you get.

Posted By Mr. in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I needed a very specific color of tourmaline and Gem Select had it. I had to get the client to agree and then ordered the stone. It arrived better than pictured and we all were very happy.

Posted By Tim W in February, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Took a chance on purchasing my gemstones from Gemselect and was impressed. 10/10

Posted By KT in September, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

If you have motion picture, then I will be more satisfied with.

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