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Home › Gemstones › Natural Untreated Gemstones

Natural Untreated Gemstones

Discover genuine untreated gemstones selected for natural beauty, rarity, and authenticity.

Natural Untreated Gemstones Weight
Natural Untreated Gemstones Size
Natural Untreated Gemstones Clarity
Natural Untreated Gemstones Price
Natural Untreated Gemstones Treatment

Size Explained

Choose Size or Size Range
For Example: 6-7
For Example: 8-9
Bi-color Natural Untreated Gemstones
Black Natural Untreated Gemstones
Blue Natural Untreated Gemstones
Brown Natural Untreated Gemstones
Golden Natural Untreated Gemstones
Gray Natural Untreated Gemstones
Green Natural Untreated Gemstones
Multicolor Natural Untreated Gemstones
Orange Natural Untreated Gemstones
Pink Natural Untreated Gemstones
Purple Natural Untreated Gemstones
Red Natural Untreated Gemstones
Turquoise Natural Untreated Gemstones
Violet Natural Untreated Gemstones
White Natural Untreated Gemstones
Yellow Natural Untreated Gemstones
Single
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Faceted
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1.53ct Green Sphene, Oval, Transparent

1.53ct Green Sphene, Oval, Transparent

7 x 5.9 mm

$ 7.62

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0.68ct Blue Kyanite, Oval, SI-I1

0.68ct Blue Kyanite, Oval, SI-I1

6.3 x 4.1 mm

$ 14.90

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0.95ct Pink Morganite, Pear Shape, VVS

0.95ct Pink Morganite, Pear Shape, VVS

8 x 6 mm (calibrated)

$ 39.43

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0.69ct Yellow Citrine, Heart, VVS-VS

0.69ct Yellow Citrine, Heart, VVS-VS

6 x 6 mm (calibrated)

$ 5.49

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5.32ct Green Actinolite Cat'S Eye, Oval, Translucent

5.32ct Green Actinolite Cat'S Eye, Oval, Translucent

12.4 x 11.1 mm

$ 37.09

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1.36ct Yellow Beryl, Trillion, VS

1.36ct Yellow Beryl, Trillion, VS

8 x 8 mm (calibrated)

$ 32.51

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0.32ct Orange Carnelian, Marquise, Transparent

0.32ct Orange Carnelian, Marquise, Transparent

8 x 4 mm (calibrated)

$ 1.60

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2.67ct Brown Smoky Quartz, Marquise, VS

2.67ct Brown Smoky Quartz, Marquise, VS

18.1 x 7.1 mm

$ 15.95

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69.04ct Red Star Garnet, Oval, Opaque

69.04ct Red Star Garnet, Oval, Opaque

27.5 x 22.2 mm

$ 68.08

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1.21ct Orange Spessartite Garnet, Emerald Cut, SI

1.21ct Orange Spessartite Garnet, Emerald Cut, SI

6 x 6 mm (calibrated)

$ 57.00

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6.36ct Pink Rose Quartz, Round, Transparent

6.36ct Pink Rose Quartz, Round, Transparent

11 mm (calibrated)

$ 34.84

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2.97ct Green Prehnite, Oval, Transparent/Translucent

2.97ct Green Prehnite, Oval, Transparent/Translucent

8.9 x 8.2 mm

$ 23.21

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1.51ctw Multicolor Opal, Oval, Transparent
Opal Product Video (547993)

1.51ctw Multicolor Opal, Oval, Transparent

8 x 6 mm (calibrated)

$ 413.59

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6.44ct Yellow Citrine, Briolette, VVS

6.44ct Yellow Citrine, Briolette, VVS

15.2 x 8.5 mm

$ 36.35

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1.22ct Multicolor Opal, Oval, Transparent

1.22ct Multicolor Opal, Oval, Transparent

10 x 7 mm (calibrated)

$ 30.38

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26.51ct Multicolor Feather Pyrite, Oval, Opaque

26.51ct Multicolor Feather Pyrite, Oval, Opaque

27.8 x 19.1 mm

$ 20.68

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12.85ct Purple Kunzite, Oval, VS
Kunzite Product Video (409221)

12.85ct Purple Kunzite, Oval, VS

15.2 x 11.7 mm

$ 281.57

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2.08ct Orange Hessonite Garnet, Cushion, SI

2.08ct Orange Hessonite Garnet, Cushion, SI

7 x 7 mm (calibrated)

$ 41.02

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2.58ct Pink Rose Quartz, Flower Cut, Transparent

2.58ct Pink Rose Quartz, Flower Cut, Transparent

13 x 8.5 mm

$ 6.58

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2.00ctw White Sillimanite Cat'S Eye, Oval, Transparent

2.00ctw White Sillimanite Cat'S Eye, Oval, Transparent

7.3 x 5 mm

$ 6.57

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7.33ct Yellow Citrine, Briolette, VVS-VS

7.33ct Yellow Citrine, Briolette, VVS-VS

15.2 x 9.2 mm

$ 41.37

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1.18ct Orange Hessonite Garnet, Round, VS

1.18ct Orange Hessonite Garnet, Round, VS

6 mm (calibrated)

$ 20.60

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2.11ct Orange Hessonite Garnet, Emerald Cut, VS-SI

2.11ct Orange Hessonite Garnet, Emerald Cut, VS-SI

8 x 6 mm (calibrated)

$ 35.24

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9.49ct Black Tourmaline, Cushion, Opaque

9.49ct Black Tourmaline, Cushion, Opaque

14.3 x 11.4 mm

$ 47.26

View Gem
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Why Buy Natural Untreated Gemstones from GemSelect?

Why Choose Untreated Gemstones?

Untreated gemstones are valued for their natural color and clarity without artificial enhancement. Many buyers prefer these gems for authenticity, rarity, and long-term value.

Natural Loose Untreated Gems Online

Shop loose untreated gemstones online at GemSelect with confidence. Browse sapphires, rubies, spinels, aquamarine, garnet, tourmaline, and more with full disclosure.

Natural Untreated Gemstones for Jewelry and Collecting

Untreated Gemstones for Jewelry

Natural untreated gems are excellent for rings, earrings, pendants, and custom jewelry. Their original beauty makes every piece unique and meaningful.

Popular Untreated Gemstone Types

Popular choices include untreated sapphire, ruby, spinel, garnet, tourmaline, zircon, aquamarine, and many collector stones in a wide range of colors.

Certified Natural Gemstones

Many buyers choose untreated gemstones with gemological reports for added confidence. Certification can confirm identity and indicate whether treatments are present.

Collector Quality Untreated Gems

Collectors appreciate untreated gemstones because naturally fine examples are rarer than treated material. These stones can be especially desirable when color and clarity are strong.

Calibrated Untreated Gemstones

We also offer calibrated untreated gemstones in popular sizes suitable for standard jewelry settings, making custom designs easier and faster.

Worldwide Shipping from GemSelect

GemSelect offers secure online ordering, detailed product images, and worldwide delivery so you can shop untreated gemstones from anywhere.

Learn more about gemstone treatments, identification, and care on our Gemstone Information Pages.

FAQs

What does untreated gemstone mean?

An untreated gemstone has not undergone enhancement processes such as heating, dyeing, filling, coating, or diffusion to improve appearance.

Are untreated gemstones more valuable?

Often yes, especially in sapphire, ruby, and other premium gems where fine untreated stones are rarer than treated examples.

How can I verify a gemstone is untreated?

Independent laboratory certification is the best way to verify whether a gemstone is natural and untreated.

Which gemstones are commonly sold untreated?

Spinel, garnet, zircon, tourmaline, aquamarine, and some sapphires or rubies are often available untreated depending on source and quality.

Are all untreated gemstones natural?

Natural untreated gemstones are mined stones that have not been enhanced after cutting. Always buy from trusted sellers with clear disclosure.

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

The website was very easy to use.

Posted By Garnet in January, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

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.

Posted By Emmanuel in October, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

the selection is good as are the prices

Posted By Old man in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Very neat and to the point

Posted By Botha in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

My experience was done with ease

Posted By Barb in October, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Absolutely love the website, selection and products. Can you guys add a gemstones with inclusions tab. I like those it'd be nice to have them all in one place but i do understand it would be alot of work to go through and categorize them. Thank you anyways

Posted By The homie edgar in December, 2025
Source: Bizrate
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