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Home Gemstones 5mm Rounds

5mm Round Gemstones

Shop natural loose gemstones in a popular 5mm round size, ideal for jewelry settings, accent stones, matched designs and colorful custom pieces.

5mm Rounds Weight
5mm Rounds Size
5mm Rounds Clarity
5mm Rounds Price
5mm Rounds Treatment

Size Explained

Choose Size or Size Range
For Example: 6-7
For Example: 8-9
Bi-color
Black 5mm Rounds
Blue 5mm Rounds
Brown 5mm Rounds
Golden
Gray 5mm Rounds
Green 5mm Rounds
Multicolor 5mm Rounds
Orange 5mm Rounds
Pink 5mm Rounds
Purple 5mm Rounds
Red 5mm Rounds
Turquoise 5mm Rounds
Violet 5mm Rounds
White 5mm Rounds
Yellow 5mm Rounds
Single
Pairs
Lots
Faceted
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0.54ct Pink Tourmaline, Round, Transparent

5 mm (calibrated)

$ 17.93

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0.85ct Gray Cat'S Eye Alexandrite, Round, Opaque

5 mm (calibrated)

$ 170.00

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2.34ctw Yellow Sapphire, Round, VVS-VS

5 mm (calibrated)

$ 153.95

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2.42ctw Yellow Sapphire, Round, VVS-VS

5 mm (calibrated)

$ 159.21

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0.69ct Yellow Tourmaline, Round, Transparent

5 mm (calibrated)

$ 13.74

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0.53ct Blue Sapphire, Round, VVS-VS

5 mm (calibrated)

$ 357.03

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3.23ctw Purple Rhodolite Garnet, Round, VS

5 mm (calibrated)

$ 70.77

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0.58ct Purple Spinel, Round, VVS-VS

5 mm (calibrated)

$ 30.42

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0.66ct Blue Kyanite, Round, SI

5 mm (calibrated)

$ 16.43

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0.56ct Blue Sapphire, Round, VS

5 mm (calibrated)

$ 333.35

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0.58ct Pink Tourmaline, Round, Transparent

5 mm (calibrated)

$ 23.11

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0.65ct Blue Sapphire, Round, VVS-VS

5 mm (calibrated)

$ 386.93

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2.92ctw Yellow Sapphire, Round, VVS-VS

5 mm (calibrated)

$ 160.47

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0.70ct Yellow Sapphire, Round, VVS-VS

5 mm (calibrated)

$ 44.80

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0.76ct Green Tourmaline, Round, Transparent

5 mm (calibrated)

$ 15.14

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0.40ct Pink Morganite, Round, VS-SI

5 mm (calibrated)

$ 16.60

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0.69ct Pink Spinel, Round, VVS-VS

5 mm (calibrated)

$ 51.54

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0.76ct Orange Sapphire, Round, VVS-VS

5 mm (calibrated)

$ 48.64

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1.30ctw Blue Kyanite, Round, SI

5 mm (calibrated)

$ 32.37

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1.34ctw White Zircon, Round, VS

5 mm (calibrated)

$ 39.64

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2.37ctw Orange Sapphire, Round, VVS-VS

5 mm (calibrated)

$ 155.92

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0.66ct Pink Tourmaline, Round, Transparent

5 mm (calibrated)

$ 13.70

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0.52ct Blue Sapphire, Round, VS

5 mm (calibrated)

$ 309.54

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0.65ct Pink Tourmaline, Round, Transparent

5 mm (calibrated)

$ 25.90

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Why Buy 5mm Rounds from GemSelect?

Shop Natural 5mm Round Loose Gemstones

Round gemstones are one of the most versatile choices for jewelry, and the 5mm size is especially useful for designs that need a balanced, wearable center stone or a noticeable accent. This category brings together natural loose gemstones cut in or near a 5mm round format so you can compare colors, gem varieties and individual stones in one convenient place.

Why Choose a 5mm Round Gemstone?

A 5mm round gem offers a classic look that works across many jewelry styles. It is large enough to show color and sparkle, yet small enough for everyday rings, stud earrings, delicate pendants, stackable designs and side-stone arrangements. The round shape is also widely supported by standard jewelry settings, making it a practical option for custom projects and replacements.

Popular Uses for 5mm Rounds

Customers often choose 5mm round gemstones for solitaire rings, birthstone jewelry, matching earrings, cluster designs, halo settings and multi-stone pieces. The size can also be useful when replacing a stone in an existing mounting, provided the exact measurements and setting requirements are checked carefully before purchase.

Selection of natural loose 5mm round gemstones

Compare Gem Type, Color and Measurements

Even within the same nominal size, natural gemstones can vary slightly in diameter, depth, color, clarity and overall appearance. Review each product listing for the actual measurements, carat weight, photos and gem details. If you are buying for a pre-made setting, the millimeter dimensions are usually more important than carat weight.

Buying Tips for Jewelry Projects

For earrings or symmetrical designs, look for stones with similar color, size and shape. For rings and pendants, consider how the gemstone color will pair with your chosen metal and setting style. If durability is important for daily wear, compare gem varieties carefully and choose a stone suited to the type of jewelry you plan to make.

FAQ: 5mm Round Gemstones

Are all stones in this category exactly 5mm?

They are listed as 5mm round gemstones, but natural cut stones may have slight measurement variations. Always check the individual product dimensions before ordering, especially for fitted settings.

Is a 5mm round gemstone good for a ring?

Yes, a 5mm round stone is a popular size for rings, including solitaire, birthstone, stacking and accent designs. Make sure the chosen gem variety is suitable for how often the ring will be worn.

Can I use 5mm rounds for earrings?

Yes, 5mm round gemstones are commonly used for stud earrings and matched jewelry. For pairs, compare the individual stones for size, color and overall appearance.

What matters more: millimeter size or carat weight?

For jewelry settings, millimeter size is usually the key measurement. Carat weight can vary between gem types because different minerals have different densities and cutting proportions.

How do I choose the right 5mm round gemstone?

Start with the jewelry style and setting size, then compare color, gem type, durability, measurements and the details shown on each individual listing.

GemSelect Certified Store Reviews

GemSelect: Over 22 Years in the Gemstone Business! Thank you for trusting us with your purchase!

Overall Rating -> 7 star ratings

Easy, quick.

Posted By Mich in June, 2026
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

Great selection. Maybe too great i kept adding and deleting stuff because i found better looking ones

Posted By Edsor works in October, 2025
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Overall Rating -> 10 star ratings

There is NOPLACE else I'd rather buy gemstones. Every single aspect exceeds expectations

Posted By Tabsatx in August, 2026
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Overall Rating -> 10 star ratings

I loved it! Extensive inventory, great prices, I definitely will be buying from here again!

Posted By Lex in April, 2026
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Overall Rating -> 9 star ratings

Fast and reliable service.

Posted By Zæck in December, 2025
Source: Bizrate
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