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Home › Gemstones › Gemstones By Size › 5 mm Gemstones

5 mm Gemstones for Jewelry

Browse our selection of precisely calibrated 5 mm gemstones, ideal for consistent and professional jewelry designs.

5 mm Gemstones Weight
5 mm Gemstones Size
5 mm Gemstones Clarity
5 mm Gemstones Price
5 mm Gemstones Treatment

Size Explained

Choose Size or Size Range
For Example: 6-7
For Example: 8-9
Bi-color
Black 5 mm Gemstones
Blue 5 mm Gemstones
Brown 5 mm Gemstones
Golden
Gray 5 mm Gemstones
Green 5 mm Gemstones
Multicolor 5 mm Gemstones
Orange 5 mm Gemstones
Pink 5 mm Gemstones
Purple 5 mm Gemstones
Red 5 mm Gemstones
Turquoise 5 mm Gemstones
Violet 5 mm Gemstones
White 5 mm Gemstones
Yellow 5 mm Gemstones
Single
Pairs
Lots
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1.49ctw Blue Apatite, Oval, VS-SI

1.49ctw Blue Apatite, Oval, VS-SI

5 x 4 mm (calibrated)

$ 30.78

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0.99ctw Orange Spessartite Garnet, Oval, VS

0.99ctw Orange Spessartite Garnet, Oval, VS

5 x 4 mm (calibrated)

$ 34.51

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1.49ctw Red Rhodolite Garnet, Square, VS

1.49ctw Red Rhodolite Garnet, Square, VS

5 x 5 mm (calibrated)

$ 13.05

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2.06ctw Blue Tanzanite, Pear Shape, VS

2.06ctw Blue Tanzanite, Pear Shape, VS

5 x 3 mm (calibrated)

$ 78.99

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2.35ctw Blue Tanzanite, Pear Shape, VS

2.35ctw Blue Tanzanite, Pear Shape, VS

5.1 x 3.2 mm

$ 90.12

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2.84ctw Red Pyrope Garnet, Square, VS

2.84ctw Red Pyrope Garnet, Square, VS

5 x 5 mm (calibrated)

$ 21.78

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2.53ctw Red Pyrope Garnet, Square, VS

2.53ctw Red Pyrope Garnet, Square, VS

5 x 5 mm (calibrated)

$ 19.41

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0.61ct Yellow Sphalerite, Round, SI-I1

0.61ct Yellow Sphalerite, Round, SI-I1

5 mm (calibrated)

$ 30.38

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0.70ct Orange Sphalerite, Round, SI

0.70ct Orange Sphalerite, Round, SI

5 mm (calibrated)

$ 34.86

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0.56ct Pink Spinel, Cushion, VS

0.56ct Pink Spinel, Cushion, VS

4.9 x 4.4 mm

$ 101.26

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0.65ct Green Sphene, Oval, Transparent

0.65ct Green Sphene, Oval, Transparent

5.2 x 4.8 mm

$ 3.24

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1.48ctw Blue Tanzanite, Pear Shape, VS

1.48ctw Blue Tanzanite, Pear Shape, VS

5.1 x 3.2 mm

$ 56.76

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0.66ct Green Tourmaline, Round, Transparent

0.66ct Green Tourmaline, Round, Transparent

5 mm (calibrated)

$ 13.70

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0.21ct Violet Iolite, Emerald Cut, VS-SI

0.21ct Violet Iolite, Emerald Cut, VS-SI

4.9 x 2.9 mm

$ 8.37

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1.46ctw Blue Tanzanite, Pear Shape, VS

1.46ctw Blue Tanzanite, Pear Shape, VS

5 x 3 mm (calibrated)

$ 55.98

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0.26ct Yellow Sapphire, Baguette, VVS-VS
Sapphire Product Video (503243)

0.26ct Yellow Sapphire, Baguette, VVS-VS

4.9 x 2.6 mm

$ 10.35

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3.45ctw Orange Sapphire, Oval, VS

3.45ctw Orange Sapphire, Oval, VS

5 x 3 mm (calibrated)

$ 75.85

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2.27ctw Purple Rhodolite Garnet, Round, VS

2.27ctw Purple Rhodolite Garnet, Round, VS

5 mm (calibrated)

$ 49.74

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1.47ctw Yellow Sapphire, Round, VS

1.47ctw Yellow Sapphire, Round, VS

5 mm (calibrated)

$ 80.02

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2.21ctw Violet Tanzanite, Pear Shape, VS

2.21ctw Violet Tanzanite, Pear Shape, VS

5 x 3 mm (calibrated)

$ 84.75

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0.74ct Orange Sphalerite, Round, SI

0.74ct Orange Sphalerite, Round, SI

5 mm (calibrated)

$ 36.85

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0.55ct Pink Spinel, Cushion, VVS-VS

0.55ct Pink Spinel, Cushion, VVS-VS

5.2 x 4.1 mm

$ 38.35

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0.38ct Yellow Citrine, Heart, VVS-VS

0.38ct Yellow Citrine, Heart, VVS-VS

5 x 5 mm (calibrated)

$ 3.03

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0.58ct Purple Sapphire, Round, VS
Sapphire Product Video (514426)

0.58ct Purple Sapphire, Round, VS

5 mm (calibrated)

$ 290.55

View Gem

Why Buy 5 Mm Gemstones from GemSelect?

Precision Cut 5 mm Gemstones

Our 5 mm gemstones are expertly cut to precise dimensions, making them ideal for standardized jewelry settings such as rings, earrings, and bracelets.

Shop 5mm Loose Gemstones Online

Discover a wide range of 5mm loose gemstones available in many varieties, colors, and shapes, all ready for immediate shipment worldwide.

Perfect Size for Jewelry Settings

The 5 mm size is one of the most popular choices for jewelry, offering a balance between visibility and wearability for rings, studs, and pendants.

Wide Variety of Gemstone Types

Choose from sapphires, garnets, amethyst, citrine, peridot, and many other gemstones, all available in calibrated 5 mm sizes.

Faceted and Cabochon Options

Our 5 mm gemstones are available in both faceted cuts for maximum brilliance and cabochon finishes for a smooth, classic appearance.

Calibrated Gemstones for Easy Setting

Calibrated 5mm gemstones ensure a consistent fit in pre-made jewelry mounts, saving time and ensuring professional results for jewelers.

Natural and Certified Gemstones

All our gemstones are natural and carefully sourced, with full disclosure of any treatments to ensure transparency and trust.

Wholesale 5 mm Gemstones

We offer competitive pricing for bulk purchases, making our 5 mm gemstones an excellent choice for jewelry manufacturers and resellers.

Learn more about gemstone cuts, sizes, and quality on our Gemstone Cut Information Page.

FAQs

What does 5 mm mean in gemstones?

5 mm refers to the diameter or size of the gemstone, commonly used for round stones, making it a standardized size for jewelry settings.

Are 5 mm gemstones considered large?

5 mm gemstones are considered medium-sized, offering a noticeable presence while remaining comfortable for everyday wear.

Are 5mm gemstones calibrated?

Yes, most 5mm gemstones are precision-cut to calibrated sizes, ensuring they fit standard jewelry mounts without adjustment.

Which gemstones are available in 5 mm size?

Many gemstones are available in 5 mm, including sapphire, ruby, garnet, amethyst, citrine, peridot, and more.

Can I use 5 mm gemstones for engagement rings?

Yes, 5 mm gemstones are a popular choice for engagement rings, especially for those seeking a balanced and practical stone size.

Do 5 mm gemstones work with standard settings?

Yes, calibrated 5 mm gemstones are designed to fit standard jewelry settings, making them easy to use in pre-made mounts.

Are your 5 mm gemstones natural?

All our gemstones are natural, with any treatments clearly disclosed to maintain transparency and customer confidence.

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

On the clarity options it goes "and better" so if youre looking for si specifically and you click si and better it still shows you basically everything. It just removes the opaques. Itd be nice if it was vs only, vss only, si only, etc

Posted By Iamnotakrustykrab in December, 2025
Source: Bizrate

Overall Rating -> 8 star ratings

It was fine

Posted By Na in April, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Enjoy viewing the selections. Excellent product

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

Overall Rating -> 10 star ratings

Filters need to be improved but rest of website is great

Posted By Rock hound in December, 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

Overall Rating -> 10 star ratings

Good, hope gem quality is good and genuine

Posted By Varun in May, 2026
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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