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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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Bi-color Untreated Gemstones
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Orange Untreated Gemstones
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Yellow Untreated Gemstones
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2.13ct Orange Zircon, Oval, VS

2.13ct Orange Zircon, Oval, VS

7.7 x 6.4 mm

$ 58.35

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5.88ctw Pink Strawberry Quartz, Oval, Transparent

5.88ctw Pink Strawberry Quartz, Oval, Transparent

11 x 9 mm (calibrated)

$ 44.11

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42.10ct Multicolor Rhodochrosite, Fancy, Translucent
Rhodochrosite Product Video (548708)

42.10ct Multicolor Rhodochrosite, Fancy, Translucent

40.4 x 16.6 mm

$ 55.34

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2.59ct Yellow Golden Beryl, Round, VVS

2.59ct Yellow Golden Beryl, Round, VVS

9 mm (calibrated)

$ 56.76

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0.51ct Yellow Color-Change Diaspore, Baguette, VS

0.51ct Yellow Color-Change Diaspore, Baguette, VS

5.2 x 4.1 mm

$ 17.89

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19.25ct Brown Tiger'S Eye, Oval, Opaque

19.25ct Brown Tiger'S Eye, Oval, Opaque

21.6 x 14.6 mm

$ 19.17

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1.84ctw Orange Sunstone, Oval, Translucent

1.84ctw Orange Sunstone, Oval, Translucent

8 x 6 mm (calibrated)

$ 12.83

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1.65ct Multicolor Labradorite, Pear Shape, Translucent

1.65ct Multicolor Labradorite, Pear Shape, Translucent

9 x 6 mm (calibrated)

$ 3.64

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10.68ct Pink Kunzite, Emerald Cut, VVS
Kunzite Product Video (710476)

10.68ct Pink Kunzite, Emerald Cut, VVS

14.5 x 9.4 mm

$ 281.88

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0.35ct White Rainbow Moonstone, Square, Transparent

0.35ct White Rainbow Moonstone, Square, Transparent

4.2 x 4.1 mm

$ 12.20

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8.55ct Multicolor Boulder Opal, Cushion, Opaque

8.55ct Multicolor Boulder Opal, Cushion, Opaque

16 x 13.6 mm

$ 35.48

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5.43ct Brown Moonstone, Oval, Translucent

5.43ct Brown Moonstone, Oval, Translucent

14.1 x 10.6 mm

$ 11.72

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30.02ct Multicolor Jasper, Oval, Opaque

30.02ct Multicolor Jasper, Oval, Opaque

33.7 x 23.2 mm

$ 18.09

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1.04ct Purple Spinel, Oval, VVS-VS

1.04ct Purple Spinel, Oval, VVS-VS

6.6 x 5.7 mm

$ 119.64

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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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4.54ct Yellow Apatite, Oval, VS-SI

4.54ct Yellow Apatite, Oval, VS-SI

12 x 9.5 mm

$ 146.26

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1.49ct Yellow Citrine, Emerald Cut, VVS

1.49ct Yellow Citrine, Emerald Cut, VVS

8 x 6 mm (calibrated)

$ 10.39

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5.45ct Orange Imperial Topaz, Cushion, VVS
Imperial Topaz Product Video (346569)

5.45ct Orange Imperial Topaz, Cushion, VVS

13.2 x 8.1 mm

$ 3,039.79

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6.83ctw Yellow Citrine, Oval, VVS

6.83ctw Yellow Citrine, Oval, VVS

14.1 x 8.1 mm

$ 52.38

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1.66ct Yellow Citrine, Emerald Cut, VVS-VS

1.66ct Yellow Citrine, Emerald Cut, VVS-VS

8.2 x 6.3 mm

$ 10.37

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4.13ct White Topaz, Oval, VVS-VS

4.13ct White Topaz, Oval, VVS-VS

11 x 9 mm (calibrated)

$ 31.67

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3.21ct White Moonstone, Oval, Translucent

3.21ct White Moonstone, Oval, Translucent

10 x 8 mm (calibrated)

$ 8.78

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1.83ct Blue Cavansite, Fancy, Opaque

1.83ct Blue Cavansite, Fancy, Opaque

9.7 x 7.5 mm

$ 10.63

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11.91ct Violet Amethyst, Flower Cut, Translucent

11.91ct Violet Amethyst, Flower Cut, Translucent

15 x 15 mm (calibrated)

$ 39.14

View Gem
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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

Very neat and to the point

Posted By Botha in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I had a very easy time navigating the web page and using filters to find what I was looking for. The varied selection was nice to see and pricing is clear and fair.

Posted By Mattick in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Love, and have always loved, your website.

Posted By Aberabic in July, 2025
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
Source: Bizrate

Overall Rating -> 10 star ratings

Very good

Posted By Niska in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

They have a wonderful selection of gems of all sorts, shapes, cuts, and quality. I am very particular about the quality of stones I buy, and found many with VVS clarity and excellent cut and polish. I am thrilled with each of the stones I purchased, and would definitely recommend GemSelect to everyone.

Posted By Debsarabs in February, 2026
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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