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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
Untreated Gemstones Clarity
Untreated Gemstones Price
Untreated Gemstones Treatment

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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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2.99ctw Yellow Citrine, Square, VS

2.99ctw Yellow Citrine, Square, VS

7 x 7 mm (calibrated)

$ 20.77

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26.54ct Multicolor Jasper, Cushion, Opaque

26.54ct Multicolor Jasper, Cushion, Opaque

24.5 x 15.9 mm

$ 15.42

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1.05ctw White Amethyst, Cushion, Transparent

1.05ctw White Amethyst, Cushion, Transparent

5 x 5 mm (calibrated)

$ 7.32

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0.77ct Yellow Citrine, Oval, Transparent

0.77ct Yellow Citrine, Oval, Transparent

10.1 x 4.1 mm

$ 5.37

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0.82ct Yellow Color-Change Diaspore, Cushion, VVS

0.82ct Yellow Color-Change Diaspore, Cushion, VVS

5.7 x 4.7 mm

$ 43.28

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34.51ct Violet Amethyst, Oval, VVS

34.51ct Violet Amethyst, Oval, VVS

23.9 x 17.2 mm

$ 229.15

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1.00ct Green Tourmaline, Baguette, VVS

1.00ct Green Tourmaline, Baguette, VVS

8.3 x 3.7 mm

$ 34.86

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3.82ct Pink Kunzite, Fancy, VS
Kunzite Product Video (710249)

3.82ct Pink Kunzite, Fancy, VS

11.6 x 7.5 mm

$ 100.83

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0.98ct Yellow Color-Change Diaspore, Cushion, VVS-VS

0.98ct Yellow Color-Change Diaspore, Cushion, VVS-VS

6 x 5.7 mm

$ 51.73

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1.07ct Red Rhodolite Garnet, Oval, VS

1.07ct Red Rhodolite Garnet, Oval, VS

6.9 x 5.2 mm

$ 19.54

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1.01ct Green Sphene, Oval, Transparent

1.01ct Green Sphene, Oval, Transparent

6.6 x 5.4 mm

$ 5.54

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2.37ct Orange Spessartite Garnet, Oval, Transparent

2.37ct Orange Spessartite Garnet, Oval, Transparent

8 x 6.6 mm

$ 59.01

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3.67ct Pink Morganite, Round, Transparent

3.67ct Pink Morganite, Round, Transparent

9.5 mm (calibrated)

$ 42.18

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1.71ct White Opal, Oval, Transparent

1.71ct White Opal, Oval, Transparent

10 x 7 mm (calibrated)

$ 42.58

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44.80ctw Gray Hematite, Baguette, Opaque

44.80ctw Gray Hematite, Baguette, Opaque

20 x 15 mm (calibrated)

$ 43.68

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4.28ct Pink Strawberry Quartz, Round, Translucent

4.28ct Pink Strawberry Quartz, Round, Translucent

11 mm (calibrated)

$ 32.83

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45.90ct Pink Rose Quartz, Oval, Transparent

45.90ct Pink Rose Quartz, Oval, Transparent

24 x 21.2 mm

$ 54.86

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78.93ct Multicolor Jasper, Oval, Opaque

78.93ct Multicolor Jasper, Oval, Opaque

51.8 x 26.1 mm

$ 38.91

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0.57ct Red Pyrope Garnet, Heart, VS

0.57ct Red Pyrope Garnet, Heart, VS

5 x 5 mm (calibrated)

$ 14.19

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16.87ct Black Obsidian, Pear Shape, Opaque

16.87ct Black Obsidian, Pear Shape, Opaque

28.3 x 19 mm

$ 12.60

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0.03ct Black Diamond, Round, Opaque

0.03ct Black Diamond, Round, Opaque

2 mm (calibrated)

$ 23.90

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1.03ct Purple Sapphire, Pear Shape, VS-SI
Sapphire Product Video (448509)

1.03ct Purple Sapphire, Pear Shape, VS-SI

7.6 x 5.5 mm

$ 543.92

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1.04ct Yellow Chrysoberyl, Oval, VS
Chrysoberyl Product Video (366385)

1.04ct Yellow Chrysoberyl, Oval, VS

6.7 x 5.6 mm

$ 101.06

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2.67ctw Yellow Beryl, Trillion, VVS

2.67ctw Yellow Beryl, Trillion, VVS

8 x 8 mm (calibrated)

$ 53.19

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!

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I have a beautiful emerald I purchased from a company names gemselect and they are awesome! You should try them out?

Posted By Lynn in September, 2025
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Found a rock that met my need. Bought it!

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overall great

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It was all good

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The site provided lots of detail, factual data, and good photos. I also like the availability of searching by price range as well as by the type of stone.

Posted By SLIntuitive Donna in July, 2025
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Overall Rating -> 10 star ratings

I loved it! Extensive inventory, great prices, I definitely will be buying from here again!

Posted By Lex in April, 2026
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