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.
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Bi-color
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Black 5mm Rounds
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Blue 5mm Rounds
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Brown 5mm Rounds
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Golden
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Gray 5mm Rounds
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Green 5mm Rounds
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Multicolor 5mm Rounds
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Orange 5mm Rounds
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Pink 5mm Rounds
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Purple 5mm Rounds
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Red 5mm Rounds
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Turquoise 5mm Rounds
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Violet 5mm Rounds
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White 5mm Rounds
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Yellow 5mm Rounds
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Single |
Pairs |
Lots |
Faceted |
Cabochons |
0.57ct Blue Sapphire, Round, VS
5 mm (calibrated)
$ 383.97
0.70ct Yellow Grossularite Garnet, Round, VS
5 mm (calibrated)
$ 15.75
0.66ct Purple Spinel, Round, VS
5 mm (calibrated)
$ 28.37
0.64ct Pink Tourmaline, Round, Transparent
5 mm (calibrated)
$ 25.50
3.14ctw Green Peridot, Round, VVS-VS
5 mm (calibrated)
$ 51.60
0.63ct Multicolor Labradorite, Round, Translucent
5 mm (calibrated)
$ 1.54
3.00ctw Green Peridot, Round, VVS-VS
5 mm (calibrated)
$ 49.30
0.51ct Pink Tourmaline, Round, Transparent
5 mm (calibrated)
$ 20.32
1.14ctw Blue Sapphire, Round, VS
5 mm (calibrated)
$ 499.59
1.38ctw Yellow Sapphire, Round, VS
5 mm (calibrated)
$ 75.13
0.55ct Blue Sapphire, Round, VVS-VS
5 mm (calibrated)
$ 370.50
0.44ct Orange Clinohumite, Round, SI-I1
5 mm (calibrated)
$ 18.26
0.49ct Pink Tourmaline, Round, Transparent
5 mm (calibrated)
$ 19.52
1.74ctw Blue Apatite, Round, Transparent
5 mm (calibrated)
$ 28.59
0.60ct Violet Spinel, Round, VVS-VS
5 mm (calibrated)
$ 30.06
0.37ct Green Tourmaline, Round, Transparent
5 mm (calibrated)
$ 7.37
3.09ctw Orange Sunstone, Round, Translucent
5 mm (calibrated)
$ 18.38
0.68ct Orange Sphalerite, Round, VS-SI
5 mm (calibrated)
$ 33.86
0.68ct Yellow Sapphire, Round, VS
5 mm (calibrated)
$ 37.02
0.53ct Pink Spinel, Round, VS
5 mm (calibrated)
$ 39.59
0.59ct Pink Tourmaline, Round, Transparent
5 mm (calibrated)
$ 23.51
0.62ct Yellow Sapphire, Round, VVS-VS
5 mm (calibrated)
$ 39.67
1.29ctw Yellow Sapphire, Round, VVS-VS
5 mm (calibrated)
$ 82.56
0.56ct Blue Sapphire, Round, VS
5 mm (calibrated)
$ 333.35
Why Buy 5mm Rounds from GemSelect?
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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.
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 -> 8 
Good prices
Overall Rating -> 9 
Everything was good, the purchase was what I expected and what they show is what you get.
Overall Rating -> 10 
My experience was done with ease
Overall Rating -> 10
I liked the selection of gems, and price. I did not like your PayPal process. I already have a PP account and you want me to sign up for another.
Overall Rating -> 10
Wonderful purchase, can't wait to see the stone.
Overall Rating -> 10
The website has a good selection, the interface is very intuitive.
