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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

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
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
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0.32ct Violet Amethyst, Emerald Cut, VS

0.32ct Violet Amethyst, Emerald Cut, VS

5.2 x 3.3 mm

$ 2.24

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0.65ct Blue Star Sapphire, Oval, Opaque

0.65ct Blue Star Sapphire, Oval, Opaque

5 x 4 mm (calibrated)

$ 26.00

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2.22ctw Blue Tanzanite, Pear Shape, VS

2.22ctw Blue Tanzanite, Pear Shape, VS

5.1 x 3.2 mm

$ 102.56

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2.96ctw Red Rhodolite Garnet, Square, VS

2.96ctw Red Rhodolite Garnet, Square, VS

5 x 5 mm (calibrated)

$ 31.22

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0.73ct Yellow Sapphire, Round, VS

0.73ct Yellow Sapphire, Round, VS

5 mm (calibrated)

$ 56.28

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0.56ct Red Spinel, Cushion, VS

0.56ct Red Spinel, Cushion, VS

5 x 4.6 mm

$ 56.00

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0.39ctw Yellow Sapphire, Marquise, VVS

0.39ctw Yellow Sapphire, Marquise, VVS

5 x 2.5 mm (calibrated)

$ 32.18

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1.48ctw Green Demantoid Garnet, Oval, VS

1.48ctw Green Demantoid Garnet, Oval, VS

5 x 4 mm (calibrated)

$ 195.36

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0.53ct Orange Spessartite Garnet, Pear Shape, VS

0.53ct Orange Spessartite Garnet, Pear Shape, VS

5 x 4 mm (calibrated)

$ 22.26

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0.30ct Violet Iolite, Emerald Cut, VS

0.30ct Violet Iolite, Emerald Cut, VS

5 x 3 mm (calibrated)

$ 14.40

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0.41ctw Yellow Sapphire, Marquise, VVS-VS

0.41ctw Yellow Sapphire, Marquise, VVS-VS

5 x 2.8 mm

$ 33.84

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2.53ctw Red Pyrope Garnet, Square, VS

2.53ctw Red Pyrope Garnet, Square, VS

5 x 5 mm (calibrated)

$ 23.38

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1.19ctw Yellow Sapphire, Round, VVS-VS

1.19ctw Yellow Sapphire, Round, VVS-VS

5 mm (calibrated)

$ 91.75

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8.26ctw White Topaz, Square, VVS

8.26ctw White Topaz, Square, VVS

5 x 5 mm (calibrated)

$ 82.93

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2.01ctw Blue Tanzanite, Pear Shape, VS

2.01ctw Blue Tanzanite, Pear Shape, VS

5 x 3.2 mm

$ 92.87

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2.20ctw Blue Tanzanite, Pear Shape, VS

2.20ctw Blue Tanzanite, Pear Shape, VS

5 x 3 mm (calibrated)

$ 101.64

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0.37ctw Orange Sapphire, Marquise, VVS-VS

0.37ctw Orange Sapphire, Marquise, VVS-VS

5 x 2.7 mm

$ 30.54

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1.30ctw Red Pyrope Garnet, Heart, VS

1.30ctw Red Pyrope Garnet, Heart, VS

5 x 5 mm (calibrated)

$ 37.44

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7.10ctw White Topaz, Square, VVS-VS

7.10ctw White Topaz, Square, VVS-VS

5 x 5 mm (calibrated)

$ 68.29

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0.42ct Blue Tanzanite, Pear Shape, VVS-VS

0.42ct Blue Tanzanite, Pear Shape, VVS-VS

5.1 x 4.2 mm

$ 30.24

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1.26ctw Blue Tanzanite, Pear Shape, VS

1.26ctw Blue Tanzanite, Pear Shape, VS

5 x 3 mm (calibrated)

$ 58.21

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1.55ctw Red Rhodolite Garnet, Square, VS

1.55ctw Red Rhodolite Garnet, Square, VS

5 x 5 mm (calibrated)

$ 16.34

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1.39ctw Red Rhodolite Garnet, Square, VS

1.39ctw Red Rhodolite Garnet, Square, VS

5 x 5 mm (calibrated)

$ 14.66

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0.59ct Blue Sapphire, Heart, VS

0.59ct Blue Sapphire, Heart, VS

5 x 5 mm (calibrated)

$ 49.56

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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 -> 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 to conduct search, good amount of stock to select from along with variety of prices.

Posted By Que in June, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

good navigation and simple interface.

Posted By Dave in April, 2026
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

I love the products. I've bought them as gifts and people love my gifts

Posted By Love it! in February, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

All items were delivered on time with all items meeting or exceeding my expectations. Cut, clarity and color were very close to the photos and description.

Posted By Bob D in December, 2025
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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