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
0.85ct Red Ruby, Round, VS

0.85ct Red Ruby, Round, VS

5 mm (calibrated)

$ 76.19

View Gem
1.29ctw Blue Apatite, Oval, VS-SI

1.29ctw Blue Apatite, Oval, VS-SI

5 x 4 mm (calibrated)

$ 26.65

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
0.57ct Yellow Spessartite Garnet, Oval, VS

0.57ct Yellow Spessartite Garnet, Oval, VS

5 x 4.2 mm

$ 19.87

View Gem
3.91ctw Orange Hessonite Garnet, Emerald Cut, VS

3.91ctw Orange Hessonite Garnet, Emerald Cut, VS

5 x 5 mm (calibrated)

$ 77.11

View Gem
1.63ctw White Rainbow Moonstone, Pear Shape, Transparent

1.63ctw White Rainbow Moonstone, Pear Shape, Transparent

5 x 5 mm (calibrated)

$ 27.60

View Gem
1.65ctw Blue Tanzanite, Pear Shape, VS

1.65ctw Blue Tanzanite, Pear Shape, VS

5.1 x 3.8 mm

$ 63.28

View Gem
2.00ctw Blue Tanzanite, Pear Shape, VS

2.00ctw Blue Tanzanite, Pear Shape, VS

5.1 x 3.2 mm

$ 76.69

View Gem
3.00ctw Red Pyrope Garnet, Square, VS

3.00ctw Red Pyrope Garnet, Square, VS

5 x 5 mm (calibrated)

$ 23.01

View Gem
1.73ctw Blue Tanzanite, Pear Shape, VS

1.73ctw Blue Tanzanite, Pear Shape, VS

5 x 3 mm (calibrated)

$ 66.34

View Gem
1.82ctw Violet Tanzanite, Pear Shape, VS

1.82ctw Violet Tanzanite, Pear Shape, VS

5 x 3 mm (calibrated)

$ 69.79

View Gem
0.88ct Orange Sphalerite, Square, SI

0.88ct Orange Sphalerite, Square, SI

5 x 5 mm (calibrated)

$ 52.59

View Gem
0.64ct Green Sapphire, Heart, VS

0.64ct Green Sapphire, Heart, VS

5 x 5 mm (calibrated)

$ 35.01

View Gem
0.89ct Blue Sapphire, Cushion, VS

0.89ct Blue Sapphire, Cushion, VS

5 x 5 mm (calibrated)

$ 70.92

View Gem
1.26ctw Red Pyrope Garnet, Heart, VVS-VS

1.26ctw Red Pyrope Garnet, Heart, VVS-VS

5 x 5 mm (calibrated)

$ 31.37

View Gem
0.55ct Blue Sapphire, Round, VVS-VS

0.55ct Blue Sapphire, Round, VVS-VS

5 mm (calibrated)

$ 370.50

View Gem
1.57ctw Red Pyrope Garnet, Square, VVS-VS

1.57ctw Red Pyrope Garnet, Square, VVS-VS

4.9 x 4.8 mm

$ 12.04

View Gem
1.33ctw Red Pyrope Garnet, Square, VVS-VS

1.33ctw Red Pyrope Garnet, Square, VVS-VS

5 x 5 mm (calibrated)

$ 10.20

View Gem
2.20ctw Multicolor Andalusite, Pear Shape, VS

2.20ctw Multicolor Andalusite, Pear Shape, VS

5 x 3 mm (calibrated)

$ 117.53

View Gem
0.30ct Violet Iolite, Baguette, VS-SI

0.30ct Violet Iolite, Baguette, VS-SI

5 x 3 mm (calibrated)

$ 11.95

View Gem
2.67ctw Blue Sapphire, Briolette, VS
Sapphire Product Video (497997)

2.67ctw Blue Sapphire, Briolette, VS

4.9 x 3.2 mm

$ 73.13

View Gem
6.66ctw Multicolor Labradorite, Square, Transparent

6.66ctw Multicolor Labradorite, Square, Transparent

5 x 5 mm (calibrated)

$ 7.74

View Gem
0.47ct Yellow Sphalerite, Oval, SI

0.47ct Yellow Sphalerite, Oval, SI

5 x 4.3 mm

$ 23.41

View Gem
0.47ct Green Sapphire, Cushion, VVS-VS

0.47ct Green Sapphire, Cushion, VVS-VS

5 x 4 mm (calibrated)

$ 37.45

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

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

Very large selection from affordable to high end I will be coming back to shop again!

Posted By GreenGator in August, 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

Easy and functional

Posted By Dessa in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I love the product and the details about each of them.

Posted By Love It! in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I could see the actual gem I was buying

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