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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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1.89ct Green Sphene, Pear Shape, VS
Sphene Product Video (381632)

1.89ct Green Sphene, Pear Shape, VS

9.5 x 6.9 mm

$ 155.76

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31.65ctw Multicolor Labradorite, Oval, Translucent

31.65ctw Multicolor Labradorite, Oval, Translucent

25 x 18 mm (calibrated)

$ 63.05

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7.84ct Brown Smoky Quartz, Emerald Cut, VVS

7.84ct Brown Smoky Quartz, Emerald Cut, VVS

14 x 14 mm (calibrated)

$ 32.90

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0.84ct Multicolor Chocolate Opal, Round, Translucent

0.84ct Multicolor Chocolate Opal, Round, Translucent

8 mm (calibrated)

$ 27.61

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63.54ct Pink Rose Quartz, Oval, Transparent
Rose Quartz Product Video (344388)

63.54ct Pink Rose Quartz, Oval, Transparent

27.5 x 22.7 mm

$ 93.97

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7.76ct Purple Kunzite, Pear Shape, VVS
Kunzite Product Video (693457)

7.76ct Purple Kunzite, Pear Shape, VVS

13 x 10.7 mm

$ 213.55

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12.10ct Green Druzy Variscite, Fancy, Opaque

12.10ct Green Druzy Variscite, Fancy, Opaque

35.9 x 14.1 mm

$ 51.34

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2.47ct Green Tourmaline, Emerald Cut, VVS

2.47ct Green Tourmaline, Emerald Cut, VVS

22.6 x 3.6 mm

$ 81.18

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7.82ctw Pink Strawberry Quartz, Round, Translucent

7.82ctw Pink Strawberry Quartz, Round, Translucent

10 mm (calibrated)

$ 119.95

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7.36ct Pink Rose Quartz, Emerald Cut, Transparent

7.36ct Pink Rose Quartz, Emerald Cut, Transparent

11 x 11 mm (calibrated)

$ 33.60

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121.07ct Multicolor Chrysocolla, Trillion, Opaque
Chrysocolla Product Video (658616)

121.07ct Multicolor Chrysocolla, Trillion, Opaque

45.1 x 40.4 mm

$ 206.21

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0.61ct Green Demantoid Garnet, Oval, VS
Demantoid Garnet Product Video (276515)

0.61ct Green Demantoid Garnet, Oval, VS

6 x 4 mm (calibrated)

$ 139.23

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44.58ct Blue Larimar, Fancy, Opaque
Larimar Product Video (492337)

44.58ct Blue Larimar, Fancy, Opaque

26.4 x 22.9 mm

$ 483.56

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1.82ct White Sillimanite Cat'S Eye, Oval, Transparent

1.82ct White Sillimanite Cat'S Eye, Oval, Transparent

8 x 6 mm (calibrated)

$ 5.98

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6.82ct Multicolor Fire Agate, Fancy, Translucent

6.82ct Multicolor Fire Agate, Fancy, Translucent

12.7 x 11.4 mm

$ 53.49

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0.67ct Green Peridot, Square, VVS-VS
Peridot Product Video (527303)

0.67ct Green Peridot, Square, VVS-VS

5 x 5 mm (calibrated)

$ 9.20

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0.14ct Black Diamond, Round, Opaque
Diamond Product Video (699335)

0.14ct Black Diamond, Round, Opaque

3 mm (calibrated)

$ 51.36

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19.68ct Black Obsidian, Oval, Opaque

19.68ct Black Obsidian, Oval, Opaque

31 x 16.8 mm

$ 12.25

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27.02ct Yellow Quartz With Marcasite, Trillion, Transparent

27.02ct Yellow Quartz With Marcasite, Trillion, Transparent

26.7 x 23.1 mm

$ 148.01

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1.03ct Yellow Chrysoberyl, Pear Shape, VVS

1.03ct Yellow Chrysoberyl, Pear Shape, VVS

8.4 x 5.2 mm

$ 120.03

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0.97ct Yellow Color-Change Garnet, Cushion, VS-SI

0.97ct Yellow Color-Change Garnet, Cushion, VS-SI

6.8 x 4.2 mm

$ 86.09

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12.05ct Violet Charoite, Pear Shape, Opaque
Charoite Product Video (666097)

12.05ct Violet Charoite, Pear Shape, Opaque

28.2 x 12.7 mm

$ 34.30

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5.10ct Yellow Apatite, Baguette, VS
Apatite Product Video (407938)

5.10ct Yellow Apatite, Baguette, VS

14.7 x 8.3 mm

$ 232.16

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43.72ct Blue Cat'S Eye Aquamarine, Oval, Translucent
Cat's Eye Aquamarine Product Video (403262)

43.72ct Blue Cat'S Eye Aquamarine, Oval, Translucent

22 x 19 mm

$ 670.60

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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

Web site is very simple to navigate Selection is terrific

Posted By ToRa.62 in April, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

No problems. I had a minor address issue in the past and someone got back to me very quickly and we resolved the issue satisfactorily. I appreciated the quick, concerned response. So important when buyer/seller are so far apart in distance. Thank you Gem Select. Keep up the good work!

Posted By Orphanboy in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Easy and good price

Posted By Bry_guy in March, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

Ita's a pretty good and simple way to find gems that youa're looking for amazing selection

Posted By Amman in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I feel Gemselect is a trustworthy company to buy from

Posted By Becky in October, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

GemSelect offers excellent choices, prices & service- highly recommended! Unfortunately, prior to ordering a replacement gemstone, my jeweler neglected to mention it needed to be one that was a'cushion cuta' to fit the existing mount. Have yet to return/exchangea'

Posted By CJ in March, 2026
Source: Bizrate
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