Calibrated Sapphire 6x4 mm
Browse loose calibrated 6x4 mm sapphires for jewelry settings, matched designs and custom pieces. Compare individual stones by color, shape, clarity and gem details.
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Bi-color
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Black
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Blue 6x4 Sapphire
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Brown
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Golden
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Gray 6x4 Sapphire
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Green 6x4 Sapphire
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Multicolor
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Orange 6x4 Sapphire
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Pink 6x4 Sapphire
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Purple 6x4 Sapphire
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Red 6x4 Sapphire
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Turquoise
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Violet 6x4 Sapphire
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White
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Yellow 6x4 Sapphire
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Single |
Pairs |
Lots |
Faceted |
Cabochons |
0.45ct Pink Sapphire, Oval, VVS
6 x 4 mm (calibrated)
$ 42.44
0.68ct Orange Sapphire, Oval, VS
6 x 4 mm (calibrated)
$ 68.82
0.65ct Purple Sapphire, Emerald Cut, VVS-VS
6 x 4 mm (calibrated)
$ 84.23
0.56ct Yellow Sapphire, Oval, VS-SI
6 x 4 mm (calibrated)
$ 29.69
0.54ct Orange Sapphire, Pear Shape, VVS
6 x 4 mm (calibrated)
$ 30.61
0.62ct Orange Sapphire, Pear Shape, VVS-VS
6 x 4 mm (calibrated)
$ 65.55
0.60ct Purple Sapphire, Emerald Cut, VVS-VS
6 x 4 mm (calibrated)
$ 77.75
0.47ct Orange Sapphire, Pear Shape, VVS
6 x 4 mm (calibrated)
$ 26.64
0.59ct Yellow Sapphire, Oval, VVS
6 x 4 mm (calibrated)
$ 31.28
0.64ct Orange Sapphire, Oval, VVS
6 x 4 mm (calibrated)
$ 67.67
0.64ct Orange Sapphire, Oval, VVS
6 x 4 mm (calibrated)
$ 95.62
0.43ct Yellow Sapphire, Oval, VVS-VS
6 x 4 mm (calibrated)
$ 22.80
0.39ct Pink Sapphire, Oval, VS
6 x 4 mm (calibrated)
$ 36.79
0.69ct Orange Sapphire, Pear Shape, VVS-VS
6 x 4 mm (calibrated)
$ 103.09
0.45ct Yellow Sapphire, Pear Shape, VVS
6 x 4 mm (calibrated)
$ 25.51
0.66ct Orange Sapphire, Oval, VVS-VS
6 x 4 mm (calibrated)
$ 65.40
0.43ct Orange Sapphire, Pear Shape, VS
6 x 4 mm (calibrated)
$ 43.52
0.54ct Orange Sapphire, Oval, VVS-VS
6 x 4 mm (calibrated)
$ 80.68
0.32ct Purple Sapphire, Oval, VVS
6 x 4 mm (calibrated)
$ 29.27
0.60ct Yellow Sapphire, Oval, VS
6 x 4 mm (calibrated)
$ 39.84
0.61ct Yellow Sapphire, Oval, VVS
6 x 4 mm (calibrated)
$ 32.38
0.57ct Purple Sapphire, Emerald Cut, VVS-VS
6 x 4 mm (calibrated)
$ 73.86
0.60ct Yellow Sapphire, Oval, VVS
6 x 4 mm (calibrated)
$ 34.01
0.50ct Orange Sapphire, Pear Shape, VS
6 x 4 mm (calibrated)
$ 50.60
Why Buy 6x4 Sapphire from GemSelect?
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Shop 6x4 mm Calibrated Sapphires
Calibrated 6x4 mm sapphire is a practical choice when you need a loose gemstone that is close to a standard jewelry size. These stones are often selected for rings, earrings, pendants and replacement gems where millimeter dimensions matter.
Why Choose a Calibrated Size?
A calibrated gemstone is cut to fit common setting dimensions, helping simplify jewelry design and repair projects. While natural gemstones can have small measurement variations, starting with a 6x4 mm sapphire category makes it easier to find stones suited to existing mounts or planned designs.
Compare Color, Shape and Appearance
Sapphire is valued for its durable beauty and wide range of attractive colors. When shopping this category, compare each stone’s exact measurements, shape, face-up color, clarity and cut style to choose the best fit for your jewelry project.
Buying Loose Sapphire for Jewelry
Before ordering, confirm the required dimensions with your jeweler, especially if you are replacing a stone or using a pre-made setting. Review the individual product details and photos carefully, as each natural sapphire has its own character, proportions and visual appeal.
Calibrated Sapphire 6x4 mm FAQs
What does 6x4 mm calibrated sapphire mean?
It refers to a loose sapphire cut close to a 6 mm by 4 mm size, a common calibrated dimension used for many jewelry settings.
Will every 6x4 mm sapphire fit my setting?
Not always. Settings can vary, and natural gems may have slight measurement differences. Check the exact dimensions and ask your jeweler to confirm fit before setting the stone.
Is a 6x4 mm sapphire good for earrings?
Yes, 6x4 mm sapphires are commonly chosen for earrings, small rings, accent designs and pendants. For pairs, compare color, shape and measurements closely.
What should I check before buying?
Review the stone’s exact size, shape, color, clarity, cut and any listed gem details. For custom work, your jeweler can help confirm whether the stone suits the intended design.
GemSelect Certified Store Reviews
GemSelect: Over 22 Years in the Gemstone Business! Thank you for trusting us with your purchase!
Overall Rating -> 10 
The website has a good selection, the interface is very intuitive.
Overall Rating -> 10
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
Overall Rating -> 10
A pleasant experience and many choices to choose from
Overall Rating -> 8 
Site worked well and helped me find a rock that matched what I was looking for. Well within budget and I trust it will show up, so that's definitely positive. Not much else to it. Satisfied.
Overall Rating -> 9 
Ita's a pretty good and simple way to find gems that youa're looking for amazing selection
Overall Rating -> 10
Very good place to buy gemstones
