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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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4.37ctw White Topaz, Square, VVS-VS

4.37ctw White Topaz, Square, VVS-VS

4 x 4 mm (calibrated)

$ 35.19

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7.15ctw Violet Amethyst, Oval, Transparent

7.15ctw Violet Amethyst, Oval, Transparent

11 x 9 mm (calibrated)

$ 39.18

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15.22ct Multicolor Jasper, Oval, Opaque

15.22ct Multicolor Jasper, Oval, Opaque

23.7 x 17.7 mm

$ 12.58

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3.58ct White Moonstone, Oval, Translucent

3.58ct White Moonstone, Oval, Translucent

11 x 8.2 mm

$ 32.69

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11.86ct Multicolor Coral, Pear Shape, Translucent

11.86ct Multicolor Coral, Pear Shape, Translucent

20 x 15 mm (calibrated)

$ 37.03

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2.48ct Turquoise Fluorite, Pear Shape, Transparent

2.48ct Turquoise Fluorite, Pear Shape, Transparent

10 x 7 mm (calibrated)

$ 9.88

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12.02ctw Multicolor Pietersite, Fancy, Opaque

12.02ctw Multicolor Pietersite, Fancy, Opaque

19.3 x 11.9 mm

$ 45.38

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29.01ct Gray Hematite, Pear Shape, Opaque

29.01ct Gray Hematite, Pear Shape, Opaque

23.4 x 16.4 mm

$ 31.78

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1.56ct Violet Amethyst, Trillion, VS

1.56ct Violet Amethyst, Trillion, VS

8 x 8 mm (calibrated)

$ 10.31

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3.71ct Red Almandine Garnet, Emerald Cut, VS
Almandine Garnet Product Video (734753)

3.71ct Red Almandine Garnet, Emerald Cut, VS

10.6 x 7 mm

$ 129.33

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1.52ct Yellow Citrine, Round, VVS

1.52ct Yellow Citrine, Round, VVS

8 mm (calibrated)

$ 10.09

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1.61ctw Red Pyrope Garnet, Square, VS

1.61ctw Red Pyrope Garnet, Square, VS

5 x 5 mm (calibrated)

$ 12.35

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1.97ctw Red Spessartite Garnet, Round, VS

1.97ctw Red Spessartite Garnet, Round, VS

4.2 mm

$ 66.91

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1.18ct Orange Hessonite Garnet, Emerald Cut, VVS-VS

1.18ct Orange Hessonite Garnet, Emerald Cut, VVS-VS

7 x 5 mm (calibrated)

$ 17.55

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1.18ct Orange Hessonite Garnet, Emerald Cut, VVS-VS

1.18ct Orange Hessonite Garnet, Emerald Cut, VVS-VS

6.6 x 5.4 mm

$ 17.55

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2.42ct White Rainbow Moonstone, Oval, Transparent

2.42ct White Rainbow Moonstone, Oval, Transparent

10 x 8 mm (calibrated)

$ 41.19

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1.53ctw Red Pyrope Garnet, Square, VS

1.53ctw Red Pyrope Garnet, Square, VS

5 x 5 mm (calibrated)

$ 11.74

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13.42ct Pink Strawberry Quartz, Oval, Translucent

13.42ct Pink Strawberry Quartz, Oval, Translucent

16.7 x 14 mm

$ 102.92

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5.47ct Yellow Citrine, Oval, VVS-VS

5.47ct Yellow Citrine, Oval, VVS-VS

14 x 10 mm (calibrated)

$ 32.85

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5.19ct Multicolor Fire Agate, Fancy, Opaque

5.19ct Multicolor Fire Agate, Fancy, Opaque

12.7 x 10 mm

$ 73.11

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1.09ct Green Peridot, Emerald Cut, VS

1.09ct Green Peridot, Emerald Cut, VS

7 x 5 mm (calibrated)

$ 17.37

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1.78ct Multicolor Opal, Oval, Transparent

1.78ct Multicolor Opal, Oval, Transparent

10.8 x 8.1 mm

$ 44.32

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1.32ct Orange Zircon, Round, VVS-VS

1.32ct Orange Zircon, Round, VVS-VS

6.5 mm (calibrated)

$ 31.48

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9.29ct Brown Tiger'S Eye, Baguette, Opaque

9.29ct Brown Tiger'S Eye, Baguette, Opaque

16 x 12 mm (calibrated)

$ 12.04

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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

The website has a good selection, the interface is very intuitive.

Posted By PhoenixFeatherJewelry in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I have shopped at Gemselect for nearly 20 years. I especially like that you see pictures of the exact gem you are purchasing. You are a trusted source.

Posted By DNaber in October, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Very large selection from affordable to high end I will be coming back to shop again!

Posted By GreenGator in August, 2025
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Overall Rating -> 9 star ratings

It was great!

Posted By Annie in September, 2025
Source: Bizrate

Overall Rating -> 8 star ratings

I've purchased things from GemSelect before. What you see is what you get, which is not always the case with gem sites online. You can find some good value with gem select, and I will buy from them again.

Posted By Meyeusername in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

My current project is something BLUE . Opal earrings with matching tennis bracelet for her wedding. The opals and sixty two sapphires VVS & VS are AMAZINGLY BEAUTIFUL. The private jewelers were impressed by the clarity and inclusion free of the sapphires . I want to say thank you for the High quality sapphires that I purchased for my daughtera's wedding.

Posted By My real name Dean or Wandering about in May, 2026
Source: Bizrate
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