90,000+Happy Customers
20+Years
WorldwideShipping
Cart
Free Report Included
Worldwide Shipping
30 Day Returns
Help Center Shipping Payment and Checkout Returns Certificates Contact Us
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
Faceted
Cabochons
Clear All
1.31ctw Blue Apatite, Oval, VS

1.31ctw Blue Apatite, Oval, VS

5 x 4 mm (calibrated)

$ 28.78

View Gem
1.67ctw Blue Tanzanite, Pear Shape, VS

1.67ctw Blue Tanzanite, Pear Shape, VS

5 x 4 mm (calibrated)

$ 64.04

View Gem
0.59ct Red Pyrope Garnet, Heart, VVS-VS

0.59ct Red Pyrope Garnet, Heart, VVS-VS

5 x 5 mm (calibrated)

$ 14.69

View Gem
0.74ct Yellow Sapphire, Round, VS

0.74ct Yellow Sapphire, Round, VS

5 mm (calibrated)

$ 40.73

View Gem
0.43ct Green Sapphire, Oval, VS

0.43ct Green Sapphire, Oval, VS

4.8 x 4.1 mm

$ 31.78

View Gem
0.58ct Blue Sapphire, Round, VVS

0.58ct Blue Sapphire, Round, VVS

5 mm (calibrated)

$ 390.71

View Gem
0.27ct Blue Iolite, Emerald Cut, VS-SI

0.27ct Blue Iolite, Emerald Cut, VS-SI

5 x 3 mm (calibrated)

$ 10.76

View Gem
1.40ctw Blue Apatite, Oval, VS-SI

1.40ctw Blue Apatite, Oval, VS-SI

5 x 4 mm (calibrated)

$ 28.93

View Gem
0.46ct Green Sapphire, Oval, VVS-VS

0.46ct Green Sapphire, Oval, VVS-VS

5.1 x 4.1 mm

$ 34.01

View Gem
2.64ctw Red Pyrope Garnet, Square, VS

2.64ctw Red Pyrope Garnet, Square, VS

5 x 5 mm (calibrated)

$ 20.25

View Gem
1.57ctw Blue Tanzanite, Pear Shape, VS

1.57ctw Blue Tanzanite, Pear Shape, VS

5 x 3 mm (calibrated)

$ 60.21

View Gem
0.50ct Blue Sapphire, Heart, VS

0.50ct Blue Sapphire, Heart, VS

4.8 x 4.7 mm

$ 34.86

View Gem
1.38ctw Yellow Sapphire, Round, VS

1.38ctw Yellow Sapphire, Round, VS

5 mm (calibrated)

$ 75.13

View Gem
0.61ct Yellow Spessartite Garnet, Oval, VS-SI

0.61ct Yellow Spessartite Garnet, Oval, VS-SI

5.2 x 4.2 mm

$ 20.25

View Gem
0.60ct Yellow Citrine, Cushion, Transparent

0.60ct Yellow Citrine, Cushion, Transparent

5 x 5 mm (calibrated)

$ 4.48

View Gem
0.55ctw Blue Tanzanite, Pear Shape, VS

0.55ctw Blue Tanzanite, Pear Shape, VS

5.2 x 4 mm

$ 32.32

View Gem
0.39ct Yellow Citrine, Heart, VVS-VS

0.39ct Yellow Citrine, Heart, VVS-VS

5 x 5 mm (calibrated)

$ 3.10

View Gem
0.37ct Yellow Citrine, Heart, VVS

0.37ct Yellow Citrine, Heart, VVS

5 x 5 mm (calibrated)

$ 2.46

View Gem
2.75ctw Red Rhodolite Garnet, Square, VS

2.75ctw Red Rhodolite Garnet, Square, VS

5 x 5 mm (calibrated)

$ 24.07

View Gem
2.90ctw Blue Topaz, Oval, VS

2.90ctw Blue Topaz, Oval, VS

4.9 x 3.4 mm

$ 15.89

View Gem
1.43ctw Red Rhodolite Garnet, Square, VS

1.43ctw Red Rhodolite Garnet, Square, VS

5 x 5 mm (calibrated)

$ 12.52

View Gem
0.24ct Violet Iolite, Emerald Cut, SI

0.24ct Violet Iolite, Emerald Cut, SI

5 x 3 mm (calibrated)

$ 9.56

View Gem
0.66ct Blue Sapphire, Round, VS

0.66ct Blue Sapphire, Round, VS

5 mm (calibrated)

$ 392.87

View Gem
0.32ct Yellow Spessartite Garnet, Oval, VS-SI

0.32ct Yellow Spessartite Garnet, Oval, VS-SI

4.9 x 3.1 mm

$ 11.16

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 -> 8 star ratings

It was a good interaction I got a good gemstone for cheap

Posted By Jon in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I needed a very specific color of tourmaline and Gem Select had it. I had to get the client to agree and then ordered the stone. It arrived better than pictured and we all were very happy.

Posted By Tim W in February, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Easy picking, fast checkout, secure shipping. Cana't ask for anything more than efficiency and a good price.

Posted By Beman 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

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 -> 10 star ratings

I am filling a small treasure chest and picked a nice amethyst.

Posted By VinnyD in August, 2025
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
Enlarged Gemstone Image