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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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Untreated Gemstones Treatment

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Orange Untreated Gemstones
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Yellow Untreated Gemstones
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13.45ct Multicolor Labradorite, Round, Translucent

13.45ct Multicolor Labradorite, Round, Translucent

15 mm (calibrated)

$ 28.93

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9.40ctw Yellow Citrine, Oval, VVS-VS

9.40ctw Yellow Citrine, Oval, VVS-VS

14 x 10 mm (calibrated)

$ 56.43

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49.85ct Orange Druzy Citrine, Fancy, Opaque
Druzy Citrine Product Video (690271)

49.85ct Orange Druzy Citrine, Fancy, Opaque

32.7 x 24.6 mm

$ 41.50

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0.98ct Multicolor Opal, Pear Shape, Translucent

0.98ct Multicolor Opal, Pear Shape, Translucent

9 x 6 mm (calibrated)

$ 24.50

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13.97ctw Violet Amethyst, Oval, Transparent

13.97ctw Violet Amethyst, Oval, Transparent

14 x 10 mm (calibrated)

$ 76.53

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6.05ct Brown Tiger'S Eye, Baguette, Opaque

6.05ct Brown Tiger'S Eye, Baguette, Opaque

12 x 10 mm (calibrated)

$ 6.03

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3.96ct Pink Morganite, Pear Shape, Transparent

3.96ct Pink Morganite, Pear Shape, Transparent

12.8 x 8.1 mm

$ 16.43

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2.76ct Pink Strawberry Quartz, Oval, Transparent

2.76ct Pink Strawberry Quartz, Oval, Transparent

10 x 8 mm (calibrated)

$ 20.51

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0.86ct Violet Amethyst, Heart, Transparent

0.86ct Violet Amethyst, Heart, Transparent

6 x 6 mm (calibrated)

$ 5.99

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3.25ctw Red Rhodolite Garnet, Square, VS

3.25ctw Red Rhodolite Garnet, Square, VS

5 x 5 mm (calibrated)

$ 28.45

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0.79ct Green Tourmaline, Round, Transparent

0.79ct Green Tourmaline, Round, Transparent

5.5 mm (calibrated)

$ 13.10

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1.29ct Yellow Citrine, Trillion, VS

1.29ct Yellow Citrine, Trillion, VS

7 x 7 mm (calibrated)

$ 9.89

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10.03ct White Rainbow Moonstone, Marquise, Transparent
Rainbow Moonstone Product Video (668713)

10.03ct White Rainbow Moonstone, Marquise, Transparent

23.9 x 9.2 mm

$ 179.82

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0.91ctw Red Pyrope Garnet, Square, VS

0.91ctw Red Pyrope Garnet, Square, VS

4 x 4 mm (calibrated)

$ 6.98

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1.61ct Blue Kyanite, Oval, VS-SI

1.61ct Blue Kyanite, Oval, VS-SI

8 x 6 mm (calibrated)

$ 38.79

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6.08ct Yellow Citrine, Oval, VVS

6.08ct Yellow Citrine, Oval, VVS

14.9 x 10.6 mm

$ 36.84

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4.33ctw Multicolor Spectrolite, Oval, Opaque

4.33ctw Multicolor Spectrolite, Oval, Opaque

10 x 8 mm (calibrated)

$ 19.79

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2.49ctw Green Sphene, Round, Transparent

2.49ctw Green Sphene, Round, Transparent

6 mm (calibrated)

$ 12.40

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2.59ct Yellow Sphene, Oval, Translucent

2.59ct Yellow Sphene, Oval, Translucent

9.3 x 7.7 mm

$ 12.90

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2.89ct Yellow Sphene, Oval, Transparent

2.89ct Yellow Sphene, Oval, Transparent

8.7 x 7.6 mm

$ 14.39

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0.49ct Yellow Citrine, Cushion, VS

0.49ct Yellow Citrine, Cushion, VS

5 x 5 mm (calibrated)

$ 3.66

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2.00ct Orange Hessonite Garnet, Cushion, VVS-VS

2.00ct Orange Hessonite Garnet, Cushion, VVS-VS

8 x 6 mm (calibrated)

$ 35.86

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1.99ct Yellow Citrine, Flower Cut, Transparent

1.99ct Yellow Citrine, Flower Cut, Transparent

8 x 8 mm (calibrated)

$ 15.26

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0.07ct Green Alexandrite, Oval, VS-SI

0.07ct Green Alexandrite, Oval, VS-SI

3.5 x 2.5 mm

$ 48.80

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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 -> 10 star ratings

I can pick and choose from large selection and find just what I need for .y projects, currently my cane.

Posted By Darkstar731 in July, 2025
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I love the products. I've bought them as gifts and people love my gifts

Posted By Love it! in February, 2026
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Very neat and to the point

Posted By Botha in March, 2026
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I feel Gemselect is a trustworthy company to buy from

Posted By Becky in October, 2025
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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 experience. I can't wait to explore on the website further.

Posted By Kymmie in September, 2025
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