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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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0.74ct Yellow Citrine, Heart, VVS

0.74ct Yellow Citrine, Heart, VVS

6 x 6 mm (calibrated)

$ 5.16

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7.83ct Green Malachite, Oval, Opaque

7.83ct Green Malachite, Oval, Opaque

14 x 10 mm (calibrated)

$ 8.57

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1.36ct Orange Zircon, Round, VS

1.36ct Orange Zircon, Round, VS

6 mm (calibrated)

$ 29.80

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0.71ct Green Tourmaline, Baguette, VVS

0.71ct Green Tourmaline, Baguette, VVS

13.7 x 2.5 mm

$ 24.75

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1.47ct Green Tourmaline, Emerald Cut, VVS-VS

1.47ct Green Tourmaline, Emerald Cut, VVS-VS

14.1 x 3.3 mm

$ 32.21

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0.78ct Black Diamond, Round, Opaque
Diamond Product Video (668697)

0.78ct Black Diamond, Round, Opaque

5.3 mm

$ 621.50

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5.00ct Turquoise Aquamarine, Oval, Translucent

5.00ct Turquoise Aquamarine, Oval, Translucent

14 x 10 mm (calibrated)

$ 103.75

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6.08ct White Topaz, Oval, VVS

6.08ct White Topaz, Oval, VVS

12 x 10 mm (calibrated)

$ 40.37

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8.67ct Multicolor Agate, Round, Opaque

8.67ct Multicolor Agate, Round, Opaque

12 mm (calibrated)

$ 14.68

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4.70ctw Yellow Citrine, Square, VVS-VS

4.70ctw Yellow Citrine, Square, VVS-VS

8 x 8 mm (calibrated)

$ 36.05

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2.74ct Red Zircon, Oval, VS
Zircon Product Video (406734)

2.74ct Red Zircon, Oval, VS

9 x 7 mm (calibrated)

$ 140.23

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4.21ct Yellow Citrine, Briolette, VVS-VS

4.21ct Yellow Citrine, Briolette, VVS-VS

12 x 8 mm (calibrated)

$ 22.69

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24.45ct Gray Hematite, Marquise, Opaque

24.45ct Gray Hematite, Marquise, Opaque

27.3 x 13 mm

$ 24.64

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3.30ctw Green Kornerupine, Oval, VVS-VS

3.30ctw Green Kornerupine, Oval, VVS-VS

7.2 x 5.4 mm

$ 108.46

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2.60ctw Red Rhodolite Garnet, Square, VS

2.60ctw Red Rhodolite Garnet, Square, VS

5 x 5 mm (calibrated)

$ 22.76

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1.02ct Pink Tourmaline, Oval, Transparent

1.02ct Pink Tourmaline, Oval, Transparent

7.4 x 5.9 mm

$ 16.90

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5.37ct Pink Morganite, Oval, Translucent

5.37ct Pink Morganite, Oval, Translucent

12 x 10 mm (calibrated)

$ 53.49

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10.12ct Brown Tiger'S Eye, Baguette, Opaque

10.12ct Brown Tiger'S Eye, Baguette, Opaque

16 x 12 mm (calibrated)

$ 13.11

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0.51ct Orange Zircon, Oval, VVS-VS

0.51ct Orange Zircon, Oval, VVS-VS

5 x 4 mm (calibrated)

$ 12.70

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0.94ct Orange Hessonite Garnet, Round, VS

0.94ct Orange Hessonite Garnet, Round, VS

5.5 mm (calibrated)

$ 14.36

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4.60ctw Green Peridot, Round, VVS-VS

4.60ctw Green Peridot, Round, VVS-VS

5 mm (calibrated)

$ 63.00

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7.24ctw Pink Strawberry Quartz, Oval, Transparent

7.24ctw Pink Strawberry Quartz, Oval, Transparent

11 x 9 mm (calibrated)

$ 56.56

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1.36ctw Green Demantoid Garnet, Oval, VS

1.36ctw Green Demantoid Garnet, Oval, VS

4.6 x 3.7 mm

$ 149.00

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5.57ct Brown Smoky Quartz, Round, VVS

5.57ct Brown Smoky Quartz, Round, VVS

11 mm (calibrated)

$ 10.38

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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

It was great!

Posted By Annie in September, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

Ita's a pretty good and simple way to find gems that youa're looking for amazing selection

Posted By Amman in May, 2026
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Overall Rating -> 10 star ratings

GemSelect offers excellent choices, prices & service- highly recommended! Unfortunately, prior to ordering a replacement gemstone, my jeweler neglected to mention it needed to be one that was a'cushion cuta' to fit the existing mount. Have yet to return/exchangea'

Posted By CJ in March, 2026
Source: Bizrate

Overall Rating -> 8 star ratings

Site worked well and helped me find a rock that matched what I was looking for. Well within budget and I trust it will show up, so that's definitely positive. Not much else to it. Satisfied.

Posted By Big Ricky in May, 2026
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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
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Overall Rating -> 10 star ratings

Good selection prices are reasonable!

Posted By ToRa62 in April, 2026
Source: Bizrate
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