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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

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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
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48.09ct Green Uvarovite Garnet Drusy, Fancy, Opaque
Uvarovite Garnet Drusy Product Video (696564)

48.09ct Green Uvarovite Garnet Drusy, Fancy, Opaque

33.7 x 24.4 mm

$ 59.88

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7.18ct Pink Morganite, Oval, Transparent

7.18ct Pink Morganite, Oval, Transparent

11.9 x 10.8 mm

$ 78.67

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83.94ctw Gray Hematite, Round, Opaque

83.94ctw Gray Hematite, Round, Opaque

23 mm

$ 81.85

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25.67ctw Brown Tiger'S Eye, Sphere / Ball, Opaque

25.67ctw Brown Tiger'S Eye, Sphere / Ball, Opaque

12 mm (calibrated)

$ 22.50

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13.66ct Purple Kunzite, Pear Shape, VVS-VS
Kunzite Product Video (693497)

13.66ct Purple Kunzite, Pear Shape, VVS-VS

16.9 x 10.2 mm

$ 375.92

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21.94ct Blue Chalcedony, Pear Shape, Opaque

21.94ct Blue Chalcedony, Pear Shape, Opaque

27 x 20 mm (calibrated)

$ 45.53

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39.03ct Multicolor Jasper, Pear Shape, Opaque

39.03ct Multicolor Jasper, Pear Shape, Opaque

33.5 x 33.2 mm

$ 64.13

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35.54ct Multicolor Labradorite, Oval, Translucent
Labradorite Product Video (501453)

35.54ct Multicolor Labradorite, Oval, Translucent

31.5 x 21.3 mm

$ 123.82

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11.59ct Brown Smoky Quartz, Emerald Cut, VVS

11.59ct Brown Smoky Quartz, Emerald Cut, VVS

15 x 15 mm (calibrated)

$ 46.73

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20.00ct Multicolor Jasper, Oval, Opaque

20.00ct Multicolor Jasper, Oval, Opaque

25 x 18 mm (calibrated)

$ 43.82

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6.76ct Turquoise Larimar, Oval, Opaque

6.76ct Turquoise Larimar, Oval, Opaque

14 x 10 mm (calibrated)

$ 87.44

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6.35ct Brown Smoky Quartz, Marquise, VVS

6.35ct Brown Smoky Quartz, Marquise, VVS

25.3 x 9.1 mm

$ 44.27

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13.54ct Blue Aquamarine, Emerald Cut, VVS
Aquamarine Product Video (450374)

13.54ct Blue Aquamarine, Emerald Cut, VVS

19.3 x 9.7 mm

$ 3,708.61

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38.51ct Green Fluorite, Round, Transparent
Fluorite Product Video (597474)

38.51ct Green Fluorite, Round, Transparent

20 mm (calibrated)

$ 70.32

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2.31ct Multicolor Spectrolite, Round, Opaque

2.31ct Multicolor Spectrolite, Round, Opaque

10 mm (calibrated)

$ 9.07

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1.61ct Purple Spinel, Pear Shape, VS
Spinel Product Video (382653)

1.61ct Purple Spinel, Pear Shape, VS

9.3 x 6.3 mm

$ 113.63

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28.55ct Multicolor Quartz With Marcasite, Cushion, Transparent
Quartz With Marcasite Product Video (524011)

28.55ct Multicolor Quartz With Marcasite, Cushion, Transparent

21.2 x 18.2 mm

$ 187.68

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29.59ct Multicolor Quartz With Marcasite, Baguette, Transparent

29.59ct Multicolor Quartz With Marcasite, Baguette, Transparent

28.1 x 14.9 mm

$ 162.10

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1.18ct Green Tsavorite Garnet, Cushion, VS-SI
Tsavorite Garnet Product Video (415400)

1.18ct Green Tsavorite Garnet, Cushion, VS-SI

5.8 x 5.3 mm

$ 775.68

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7.60ct Green Prehnite, Cushion, Translucent

7.60ct Green Prehnite, Cushion, Translucent

12 x 12 mm (calibrated)

$ 33.31

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1.47ct Yellow Chrysoberyl, Pear Shape, VVS
Chrysoberyl Product Video (366656)

1.47ct Yellow Chrysoberyl, Pear Shape, VVS

8.4 x 6.3 mm

$ 155.73

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3.05ct Turquoise Grandidierite, Emerald Cut, SI

3.05ct Turquoise Grandidierite, Emerald Cut, SI

13 x 6.9 mm

$ 133.66

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114.72ct Multicolor Psilomelane Dendrite, Oval, Opaque
Psilomelane Dendrite Product Video (691589)

114.72ct Multicolor Psilomelane Dendrite, Oval, Opaque

57.9 x 34.5 mm

$ 92.55

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12.03ct Turquoise Larimar, Pear Shape, Opaque
Larimar Product Video (391510)

12.03ct Turquoise Larimar, Pear Shape, Opaque

20 x 15 mm (calibrated)

$ 158.16

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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

Have made 2 purchases so far from GemSelect and they have been amazing! Anytime I requested additional info, videos or pictures of a particular item, the response was always timely and helpful. This is a great place to buy, if you are looking for loose stones. Highly recommend!

Posted By Britnee Rose in September, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

This is the first time I have used this site. I was dissatisfied with the quality of gems and supplies elsewhere and decided to try GemSelect. They are awesome! I was thrilled to see the variety and the great web performance. There was the ability to search for information as well as gems. Things like the clarity rating system and caret weight of the gems. I have always loved making things and I have just started to make jewelry as a business. However I have never made a ring before and have always wanted to. On GemSelect I was able to find good quality gems to use in my creations. I am so glad the website is so easy to use. Thank you GemSelect.

Posted By PickyShopper in April, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Would have bought an indigo and selenite, but neither listed. But, you do offer quite a large assortment otherwise.

Posted By JD in July, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

I loved the selection of gemstones you have a to z

Posted By James in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Excellent options

Posted By CJ in February, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I always purchase my stones from GemSelect, their products are high quality and customer service is always great. I also like the fact that I am able to purchase unique items

Posted By Desperaux in November, 2025
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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