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Home › Gemstones › Untreated Gemstones

Untreated Gemstones

Browse our selection of untreated gemstones featuring natural color, clarity and beauty without enhancements.

Untreated Gemstones Weight
Untreated Gemstones Size
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1.49ct Violet Amethyst, Marquise, VS

1.49ct Violet Amethyst, Marquise, VS

11.8 x 6.1 mm

$ 11.42

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0.63ct Yellow Citrine, Pear Shape, VVS-VS

0.63ct Yellow Citrine, Pear Shape, VVS-VS

7 x 5 mm (calibrated)

$ 3.14

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1.06ct Yellow Citrine, Square, VVS-VS

1.06ct Yellow Citrine, Square, VVS-VS

6 x 6 mm (calibrated)

$ 7.39

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2.43ctw Red Rhodolite Garnet, Square, VS

2.43ctw Red Rhodolite Garnet, Square, VS

4.8 x 4.7 mm

$ 21.27

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4.65ct Violet Amethyst, Pear Shape, VVS

4.65ct Violet Amethyst, Pear Shape, VVS

14 x 10 mm (calibrated)

$ 30.57

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2.04ct Purple Kunzite, Emerald Cut, VS

2.04ct Purple Kunzite, Emerald Cut, VS

7.8 x 5.1 mm

$ 56.14

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5.61ct Pink Rose Quartz, Emerald Cut, Transparent

5.61ct Pink Rose Quartz, Emerald Cut, Transparent

11 x 11 mm (calibrated)

$ 30.73

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26.38ct Blue Turquoise, Oval, Opaque
Turquoise Product Video (724929)

26.38ct Blue Turquoise, Oval, Opaque

25.2 x 14.8 mm

$ 78.83

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3.65ct Pink Strawberry Quartz, Oval, Translucent

3.65ct Pink Strawberry Quartz, Oval, Translucent

10 x 8 mm (calibrated)

$ 28.00

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1.37ctw Red Rhodolite Garnet, Square, VS

1.37ctw Red Rhodolite Garnet, Square, VS

5 x 5 mm (calibrated)

$ 12.00

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9.31ct Gray Jadeite, Oval, Translucent

9.31ct Gray Jadeite, Oval, Translucent

17.2 x 11.1 mm

$ 40.79

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2.53ctw Orange Hessonite Garnet, Round, VS

2.53ctw Orange Hessonite Garnet, Round, VS

6 mm (calibrated)

$ 40.99

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3.75ct Yellow Citrine, Pear Shape, VVS-VS

3.75ct Yellow Citrine, Pear Shape, VVS-VS

12 x 10 mm (calibrated)

$ 23.55

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1.20ctw Orange Zircon, Oval, VS

1.20ctw Orange Zircon, Oval, VS

5.2 x 4.1 mm

$ 29.88

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1.71ctw White Rainbow Moonstone, Oval, Transparent

1.71ctw White Rainbow Moonstone, Oval, Transparent

7.3 x 5.3 mm

$ 28.95

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2.66ct Multicolor Pietersite, Oval, Opaque

2.66ct Multicolor Pietersite, Oval, Opaque

10 x 8 mm (calibrated)

$ 6.43

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3.37ctw White Rainbow Moonstone, Pear Shape, Transparent
Rainbow Moonstone Product Video (351817)

3.37ctw White Rainbow Moonstone, Pear Shape, Transparent

5 x 5 mm (calibrated)

$ 61.54

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3.58ctw Yellow Citrine, Emerald Cut, VS

3.58ctw Yellow Citrine, Emerald Cut, VS

8 x 6 mm (calibrated)

$ 28.53

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1.45ct Purple Sapphire, Cushion, VS
Sapphire Product Video (448606)

1.45ct Purple Sapphire, Cushion, VS

7.5 x 6 mm

$ 765.72

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6.78ct Multicolor Rainbow Pyrite, Trillion, Opaque

6.78ct Multicolor Rainbow Pyrite, Trillion, Opaque

15 x 15 mm (calibrated)

$ 17.56

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2.72ctw Brown Tiger'S Eye, Oval, Opaque

2.72ctw Brown Tiger'S Eye, Oval, Opaque

8 x 6 mm (calibrated)

$ 2.71

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2.71ct Multicolor Labradorite, Baguette, Transparent

2.71ct Multicolor Labradorite, Baguette, Transparent

8.8 x 6.7 mm

$ 5.93

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4.96ctw Red Pyrope Garnet, Pear Shape, VVS-VS

4.96ctw Red Pyrope Garnet, Pear Shape, VVS-VS

7 x 5 mm (calibrated)

$ 38.04

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1.38ctw Yellow Citrine, Heart, VVS-VS

1.38ctw Yellow Citrine, Heart, VVS-VS

6 x 6 mm (calibrated)

$ 9.62

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Why Buy Untreated Gemstones from GemSelect?

Natural Untreated Gemstones

Our untreated gemstones are completely natural and have not undergone any enhancement processes. These gems display their original color and clarity as formed in nature, making them highly valued by collectors, jewelers, and gemstone enthusiasts.

Buy Untreated Gemstones Online

At GemSelect you can easily shop untreated gemstones online with confidence. Our inventory includes carefully sourced loose gemstones from around the world, with full transparency regarding treatments and gem origins.

Natural Untreated Loose Gemstones

Why Choose Untreated Gems?

Untreated gems are prized because they remain exactly as nature created them. Without heat or chemical treatments, these stones offer rarity and authenticity that many collectors and jewelry designers prefer.

Unheated Sapphire and Ruby

Some of the most sought-after untreated gemstones include unheated sapphire and ruby. These rare stones retain their natural color and are highly valued due to the absence of heat treatment commonly used to enhance corundum.

Gemstone Authenticity and Transparency

Every gemstone at GemSelect comes with clear treatment disclosure. When purchasing untreated stones, buyers can be confident they are receiving authentic gems that have not been altered by heat or other enhancement methods.

Untreated Gems for Custom Jewelry

Natural untreated gemstones are perfect for custom jewelry pieces. Their unique appearance ensures every ring, pendant, or pair of earrings features a one-of-a-kind gemstone created by nature.

Rare and Collectible Gemstones

Because many gemstones are routinely treated, truly untreated examples can be relatively rare. Collectors often seek untreated stones because they represent the most natural state of a gemstone.

Learn more about gemstone treatments and natural gem formation on our Gemstone Treatment Guide.

FAQs

What are untreated gemstones?

Untreated gemstones are natural gems that have not been enhanced with heat, chemicals, irradiation, or other treatments. They retain their original appearance as formed in nature.

Are untreated gemstones more valuable?

In many cases untreated gemstones are more valuable because they are rarer than treated stones. Natural color without enhancement is highly prized by collectors and investors.

How can I tell if a gemstone is untreated?

Gemstone treatment is typically determined through gemological testing. Reputable sellers like GemSelect clearly disclose whether a stone is untreated or has received any enhancements.

Which gemstones are commonly untreated?

Some gemstones frequently found untreated include garnet, spinel, peridot, and certain sapphires. However, many gem types may be treated depending on their origin and quality.

Are untreated gemstones suitable for jewelry?

Yes, untreated gemstones can be excellent for jewelry depending on their hardness and durability. Popular choices include sapphire, ruby, spinel, and garnet.

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

Posted By Emm in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

good navigation and simple interface.

Posted By Dave in April, 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

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 -> 10 star ratings

I am filling a small treasure chest and picked a nice amethyst.

Posted By VinnyD in August, 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
→ View All GemSelect Reviews on Bizrate
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