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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

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For Example: 6-7
For Example: 8-9
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1.27ctw Yellow Sapphire, Round, VS

1.27ctw Yellow Sapphire, Round, VS

5 mm (calibrated)

$ 83.30

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1.57ctw Red Rhodolite Garnet, Square, VS

1.57ctw Red Rhodolite Garnet, Square, VS

5 x 5 mm (calibrated)

$ 16.55

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0.62ct Blue Sapphire, Round, VVS
Sapphire Product Video (467449)

0.62ct Blue Sapphire, Round, VVS

5 mm (calibrated)

$ 503.20

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1.65ctw Green Demantoid Garnet, Oval, VS

1.65ctw Green Demantoid Garnet, Oval, VS

4.8 x 3.9 mm

$ 217.80

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1.73ctw Blue Tanzanite, Pear Shape, VS

1.73ctw Blue Tanzanite, Pear Shape, VS

5 x 3 mm (calibrated)

$ 102.77

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0.90ct Orange Hessonite Garnet, Cushion, SI

0.90ct Orange Hessonite Garnet, Cushion, SI

5 x 5 mm (calibrated)

$ 21.38

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1.50ctw White Zircon, Round, VS

1.50ctw White Zircon, Round, VS

5 mm (calibrated)

$ 53.46

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1.14ctw Brown Moonstone, Round, Translucent

1.14ctw Brown Moonstone, Round, Translucent

5 mm (calibrated)

$ 7.52

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7.74ctw White Topaz, Square, VVS-VS

7.74ctw White Topaz, Square, VVS-VS

5 x 5 mm (calibrated)

$ 74.71

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0.70ct Yellow Sapphire, Round, VS

0.70ct Yellow Sapphire, Round, VS

5 mm (calibrated)

$ 46.42

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0.44ct Yellow Citrine, Heart, VVS-VS

0.44ct Yellow Citrine, Heart, VVS-VS

5 x 5 mm (calibrated)

$ 4.22

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1.50ctw Red Rhodolite Garnet, Square, VS

1.50ctw Red Rhodolite Garnet, Square, VS

5 x 5 mm (calibrated)

$ 15.82

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0.52ct Purple Spinel, Round, VS

0.52ct Purple Spinel, Round, VS

5 mm (calibrated)

$ 32.86

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1.32ctw Orange Zircon, Oval, VS

1.32ctw Orange Zircon, Oval, VS

5.2 x 4.1 mm

$ 33.00

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0.82ctw Purple Sapphire, Oval, VS

0.82ctw Purple Sapphire, Oval, VS

5 x 4.1 mm

$ 74.69

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1.87ctw Blue Apatite, Oval, VS
Apatite Product Video (488767)

1.87ctw Blue Apatite, Oval, VS

5 x 4 mm (calibrated)

$ 49.49

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0.64ct Orange Zircon, Oval, VVS

0.64ct Orange Zircon, Oval, VVS

5 x 4 mm (calibrated)

$ 11.52

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1.49ctw Red Pyrope Garnet, Square, VS

1.49ctw Red Pyrope Garnet, Square, VS

5 x 5 mm (calibrated)

$ 13.76

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0.60ct Green Sapphire, Heart, VS

0.60ct Green Sapphire, Heart, VS

5 x 5 mm (calibrated)

$ 39.54

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0.66ct Blue Kyanite, Round, SI

0.66ct Blue Kyanite, Round, SI

5 mm (calibrated)

$ 19.80

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0.74ct Orange Sphalerite, Round, SI

0.74ct Orange Sphalerite, Round, SI

5 mm (calibrated)

$ 44.40

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0.53ct Yellow Sapphire, Emerald Cut, VS

0.53ct Yellow Sapphire, Emerald Cut, VS

5 x 4 mm (calibrated)

$ 34.69

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0.62ct Red Pyrope Garnet, Heart, VVS

0.62ct Red Pyrope Garnet, Heart, VVS

5 x 5 mm (calibrated)

$ 5.95

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3.05ctw Green Tsavorite Garnet, Marquise, VS

3.05ctw Green Tsavorite Garnet, Marquise, VS

5.1 x 2.6 mm

$ 161.04

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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 -> 8 star ratings

I visited several online loose stone shops trying to find rare stones. I finally found one that I've been looking for here, and very satisfied. Looking forward to receive the item in 3 weeks.

Posted By Atsu in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

love the site, the experience and the products.

Posted By Ckingpots in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Great prices!!! High quality gemstones.

Posted By Ricky in October, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

The citrine gems are beautiful. I appreciated that each stone was individually shown on the website so I could see exactly what I was getting. No mystery person selecting random stones for me. The documentation included with each gem was high quality as well. Great price and arrived as expected.

Posted By Jen in December, 2025
Source: Bizrate

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 site is awesome. I was able to look at the products think about purchasing and come back and find the same products. With the amount of inventory gem select has. Its awesome to be able to filter the way that they allow you too.

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