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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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1.95ctw Purple Rhodolite Garnet, Oval, VS

1.95ctw Purple Rhodolite Garnet, Oval, VS

7 x 5 mm (calibrated)

$ 57.75

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8.86ct Violet Amethyst, Oval, Transparent

8.86ct Violet Amethyst, Oval, Transparent

14.8 x 11.9 mm

$ 52.95

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0.35ct Yellow Color-Change Diaspore, Oval, VS

0.35ct Yellow Color-Change Diaspore, Oval, VS

4.4 x 3.8 mm

$ 18.48

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0.82ct Multicolor Chocolate Opal, Oval, Translucent

0.82ct Multicolor Chocolate Opal, Oval, Translucent

8 x 6 mm (calibrated)

$ 26.95

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1.08ct Green Peridot, Oval, VS

1.08ct Green Peridot, Oval, VS

8 x 6 mm (calibrated)

$ 9.68

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0.72ct Green Tourmaline, Round, Transparent

0.72ct Green Tourmaline, Round, Transparent

5 mm (calibrated)

$ 14.34

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3.52ctw Purple Rhodolite Garnet, Oval, VS

3.52ctw Purple Rhodolite Garnet, Oval, VS

5 x 3 mm (calibrated)

$ 38.06

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5.35ct Multicolor Fire Agate, Fancy, Opaque

5.35ct Multicolor Fire Agate, Fancy, Opaque

16 x 12 mm (calibrated)

$ 41.13

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17.21ct Multicolor Jasper, Oval, Opaque

17.21ct Multicolor Jasper, Oval, Opaque

20 x 15 mm (calibrated)

$ 14.14

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0.98ct Red Spessartite Garnet, Briolette, VS

0.98ct Red Spessartite Garnet, Briolette, VS

5.9 x 4.2 mm

$ 33.52

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5.50ctw Green Prehnite, Oval, Transparent/Translucent

5.50ctw Green Prehnite, Oval, Transparent/Translucent

8.9 x 7.7 mm

$ 35.49

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26.69ct Green Jadeite, Fancy, Translucent

26.69ct Green Jadeite, Fancy, Translucent

38.7 x 14.6 mm

$ 18.27

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3.83ctw Pink Strawberry Quartz, Round, Transparent

3.83ctw Pink Strawberry Quartz, Round, Transparent

8 mm (calibrated)

$ 58.75

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0.86ct Pink Malaya Garnet, Round, VS

0.86ct Pink Malaya Garnet, Round, VS

5.5 mm (calibrated)

$ 37.69

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27.40ct Brown Tiger'S Eye Matrix, Round, Opaque

27.40ct Brown Tiger'S Eye Matrix, Round, Opaque

23 mm

$ 27.29

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54.71ct Multicolor Boulder Opal, Oval, Opaque
Boulder Opal Product Video (322038)

54.71ct Multicolor Boulder Opal, Oval, Opaque

27.3 x 23.3 mm

$ 419.58

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14.30ct Brown Smoky Quartz, Emerald Cut, VVS

14.30ct Brown Smoky Quartz, Emerald Cut, VVS

15 x 15 mm (calibrated)

$ 26.63

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4.34ct Orange Sunstone, Round, Translucent

4.34ct Orange Sunstone, Round, Translucent

11 mm (calibrated)

$ 26.49

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4.99ct White Dendritic Agate, Pear Shape, Opaque

4.99ct White Dendritic Agate, Pear Shape, Opaque

14 x 10 mm (calibrated)

$ 3.98

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2.02ct Yellow Citrine, Cushion, VVS-VS

2.02ct Yellow Citrine, Cushion, VVS-VS

8.9 x 7.6 mm

$ 15.49

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3.55ct Pink Rose Quartz, Emerald Cut, Transparent

3.55ct Pink Rose Quartz, Emerald Cut, Transparent

9.7 x 9.4 mm

$ 19.46

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3.27ct Yellow Rutile Quartz, Oval, Transparent

3.27ct Yellow Rutile Quartz, Oval, Transparent

12 x 8 mm (calibrated)

$ 8.96

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2.82ct Violet Amethyst, Trillion, VS

2.82ct Violet Amethyst, Trillion, VS

10 x 10 mm (calibrated)

$ 21.62

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1.02ct Orange Zircon, Oval, VVS-VS

1.02ct Orange Zircon, Oval, VVS-VS

6 x 4.9 mm

$ 25.40

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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The purchasing process is fairly quick and straightforward and for me user friendly so it probably took more or less than 3 minutes to purchase and pay for the items. I wish there was a discount offer for multiple items to encourage us buyers to purchase more an incentive and add more sales in your end. Besides that, it's been a great purchasing experience and will continue to shop as I am a repeat customer and have bought from your store many times before. Thank you.

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Overall Rating -> 10 star ratings

I was looking for high-quality amethyst on this site, and I was able to compare size, color, and weight in detail before making a purchase.

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