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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
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0.99ct Pink Morganite, Round, VS-SI

0.99ct Pink Morganite, Round, VS-SI

7 mm (calibrated)

$ 38.45

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0.98ct Green Sphene, Oval, Transparent

0.98ct Green Sphene, Oval, Transparent

6.4 x 5.5 mm

$ 4.88

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1.96ct Orange Moonstone, Cushion, Translucent

1.96ct Orange Moonstone, Cushion, Translucent

9 x 7 mm (calibrated)

$ 3.90

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13.94ct Brown Smoky Quartz, Emerald Cut, VVS
Smoky Quartz Product Video (408035)

13.94ct Brown Smoky Quartz, Emerald Cut, VVS

15 x 15 mm (calibrated)

$ 27.34

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2.09ct Orange Hessonite Garnet, Emerald Cut, VS-SI

2.09ct Orange Hessonite Garnet, Emerald Cut, VS-SI

8.5 x 6 mm

$ 34.90

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2.35ct Yellow Beryl, Round, VVS

2.35ct Yellow Beryl, Round, VVS

9 mm (calibrated)

$ 51.49

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6.97ctw Multicolor Labradorite, Marquise, Translucent

6.97ctw Multicolor Labradorite, Marquise, Translucent

14 x 7 mm (calibrated)

$ 15.40

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1.52ct Orange Hessonite Garnet, Oval, VVS-VS

1.52ct Orange Hessonite Garnet, Oval, VVS-VS

7.9 x 6.4 mm

$ 30.28

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2.42ctw Red Pyrope Garnet, Marquise, VVS-VS

2.42ctw Red Pyrope Garnet, Marquise, VVS-VS

9.8 x 5 mm

$ 21.21

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28.42ct Gray Hematite, Baguette, Opaque

28.42ct Gray Hematite, Baguette, Opaque

22.5 x 15.7 mm

$ 25.19

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14.82ct Multicolor Cinnabar, Cushion, Opaque

14.82ct Multicolor Cinnabar, Cushion, Opaque

21.1 x 15.7 mm

$ 17.35

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1.66ct Pink Tourmaline, Oval, Transparent

1.66ct Pink Tourmaline, Oval, Transparent

8 x 6 mm (calibrated)

$ 34.45

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5.07ct Yellow Citrine, Oval, VVS-VS

5.07ct Yellow Citrine, Oval, VVS-VS

14 x 10 mm (calibrated)

$ 30.44

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1.82ct Orange Fire Opal, Oval, Transparent
Fire Opal Product Video (370282)

1.82ct Orange Fire Opal, Oval, Transparent

10 x 8 mm (calibrated)

$ 89.73

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0.88ctw White Rainbow Moonstone, Oval, Transparent

0.88ctw White Rainbow Moonstone, Oval, Transparent

6 x 4 mm (calibrated)

$ 28.93

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9.20ct Yellow Citrine, Briolette, VVS

9.20ct Yellow Citrine, Briolette, VVS

15 x 10 mm (calibrated)

$ 52.32

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1.13ct Purple Spinel, Cushion, VVS

1.13ct Purple Spinel, Cushion, VVS

6.5 x 5.7 mm

$ 63.21

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1.28ctw Red Pyrope Garnet, Square, VVS-VS

1.28ctw Red Pyrope Garnet, Square, VVS-VS

5 x 5 mm (calibrated)

$ 9.82

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46.00ct Violet Amethyst, Pear Shape, VVS
Amethyst Product Video (734687)

46.00ct Violet Amethyst, Pear Shape, VVS

32.8 x 22.6 mm

$ 366.53

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3.15ct Turquoise Fluorite, Oval, Transparent

3.15ct Turquoise Fluorite, Oval, Transparent

8.7 x 7.4 mm

$ 12.55

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7.89ct Brown Star Moonstone, Oval, Translucent

7.89ct Brown Star Moonstone, Oval, Translucent

13.8 x 11.3 mm

$ 34.58

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6.19ct Violet Amethyst, Pear Shape, VS

6.19ct Violet Amethyst, Pear Shape, VS

16 x 12 mm (calibrated)

$ 47.47

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0.78ct Green Chrome Diopside, Marquise, VS-SI

0.78ct Green Chrome Diopside, Marquise, VS-SI

9.8 x 4.8 mm

$ 19.42

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0.94ct Violet Amethyst, Marquise, VVS-VS

0.94ct Violet Amethyst, Marquise, VVS-VS

10 x 5 mm (calibrated)

$ 6.24

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

Good, hope gem quality is good and genuine

Posted By Varun in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Wonderful purchase, can't wait to see the stone.

Posted By Tim in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

They have a wonderful selection of gems of all sorts, shapes, cuts, and quality. I am very particular about the quality of stones I buy, and found many with VVS clarity and excellent cut and polish. I am thrilled with each of the stones I purchased, and would definitely recommend GemSelect to everyone.

Posted By Debsarabs in February, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Easy and functional

Posted By Dessa in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Very food

Posted By Keeto in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Although the stones are smaller than I thought, I really don't think in millimeters, they are perfect. I plan to put one into a ring and the other into a necklace. Ordering was easy, contact kept me aware of how shipping was going, and delivery was sooner than expected. The quality of stones I have ordered in the past and this recent order is outstanding and stones I will be proud to wear.

Posted By Ktreva52 in June, 2026
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
Enlarged Gemstone Image