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Home › Calibrated Gemstones › Square Shape 13x13 mm Gems

Calibrated Square Cut Gemstones in Size 13x13 mm

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1.79ctw Natural White Zircon, Oval, VVS, Photo A

1.79ctw Natural White Zircon, Oval, VVS

Zircon

1.79ct total2 pcs
$ 10.91
6.2 x 4.2 mm
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0.63ct Natural Fire Orange Sapphire, Oval, VS, Photo A

0.63ct Natural Fire Orange Sapphire, Oval, VS

Sapphire

0.63ct1 pc
$ 63.75
6 x 4 mm (calibrated)
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1.36ctw Natural Golden Sapphire, Cushion, VS, Photo A

1.36ctw Natural Golden Sapphire, Cushion, VS

Sapphire

1.36ct total2 pcs
$ 73.89
4.8 x 4.7 mm
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1.52ct Natural Medium-Dark Orange Hessonite Garnet, Oval, VS-SI, Photo A

1.52ct Natural Medium-Dark Orange Hessonite Garnet, Oval, VS-SI

Hessonite Garnet

1.52ct1 pc
$ 24.98
7.9 x 6.5 mm
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3.10ctw Natural Clear White Topaz, Cushion, VVS-VS, Photo A

3.10ctw Natural Clear White Topaz, Cushion, VVS-VS

Topaz

3.10ct total6 pcs
$ 16.98
4.6 x 4.6 mm
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1.52ctw Natural Scarlet Red Rhodolite Garnet, Square, VS, Photo A

1.52ctw Natural Scarlet Red Rhodolite Garnet, Square, VS

Rhodolite Garnet

1.52ct total2 pcs
$ 13.30
5 x 5 mm (calibrated)
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40.15ct Natural Multicolor Jasper, Pear Shape, Opaque, Photo A

40.15ct Natural Multicolor Jasper, Pear Shape, Opaque

Jasper

40.15ct1 pc
$ 43.99
34.6 x 31.2 mm
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19.91ct Natural Silver Gray Hematite, Square, Opaque, Photo A

19.91ct Natural Silver Gray Hematite, Square, Opaque

Hematite

19.91ct1 pc
$ 20.07
16 x 15.3 mm
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1.15ctw Natural London Blue Topaz, Oval, VS, Photo A

1.15ctw Natural London Blue Topaz, Oval, VS

Topaz

1.15ct total2 pcs
$ 9.16
6 x 4 mm (calibrated)
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0.67ct Natural Light Pinkish Violet Amethyst, Octagon / Emerald Cut, VS, Photo A

0.67ct Natural Light Pinkish Violet Amethyst, Octagon / Emerald Cut, VS

Amethyst

0.67ct1 pc
$ 3.89
6 x 4 mm (calibrated)
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4.13ctw Natural Deep Orange Hessonite Garnet, Cushion, VS-SI, Photo A

4.13ctw Natural Deep Orange Hessonite Garnet, Cushion, VS-SI

Hessonite Garnet

4.13ct total2 pcs
$ 82.27
8 x 6 mm (calibrated)
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28.80ct Natural Dark Blue Aventurine, Fancy, Opaque, Photo A

28.80ct Natural Dark Blue Aventurine, Fancy, Opaque

Aventurine

28.80ct1 pc
$ 8.61
34.1 x 10.6 mm
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1.77ct Natural Multicolor Black Opal, Oval, Translucent, Photo A

1.77ct Natural Multicolor Black Opal, Oval, Translucent

Black Opal

1.77ct1 pc
$ 44.51
11.5 x 8 mm
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8.94ctw Natural Yellow Green Prehnite, Fancy, Translucent, Photo A

8.94ctw Natural Yellow Green Prehnite, Fancy, Translucent

Prehnite

8.94ct total2 pcs
$ 14.69
15 x 10 mm (calibrated)
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2.58ctw Natural White Zircon, Oval, VVS-VS, Photo A

2.58ctw Natural White Zircon, Oval, VVS-VS

Zircon

2.58ct total4 pcs
$ 16.97
6 x 4 mm (calibrated)
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2.64ct Natural Warm Forest Green Apatite, Octagon / Emerald Cut, VS, Photo A

2.64ct Natural Warm Forest Green Apatite, Octagon / Emerald Cut, VS

Apatite

2.64ct1 pc
$ 107.46
8 x 8 mm (calibrated)
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2.46ctw Natural Light Blue Sapphire, Briolette, VS, Photo A

2.46ctw Natural Light Blue Sapphire, Briolette, VS

Sapphire

2.46ct total6 pcs
$ 80.86
5 x 3 mm (calibrated)
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4.06ct Natural Dark Purple Rhodolite Garnet, Heart, VVS, Photo A

4.06ct Natural Dark Purple Rhodolite Garnet, Heart, VVS

Rhodolite Garnet

4.06ct1 pc
$ 168.49
10.3 x 9.2 mm
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1.34ctw Natural White Zircon, Round, VS, Photo A

1.34ctw Natural White Zircon, Round, VS

Zircon

1.34ct total2 pcs
$ 39.64
5 mm (calibrated)
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1.42ct Natural Light Red Ruby, Oval, VS, Photo A

1.42ct Natural Light Red Ruby, Oval, VS

Ruby

1.42ct1 pc
$ 77.79
7 x 5 mm (calibrated)
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2.52ctw Natural Medium Red Rhodolite Garnet, Square, VS, Photo A

2.52ctw Natural Medium Red Rhodolite Garnet, Square, VS

Rhodolite Garnet

2.52ct total4 pcs
$ 22.05
5 x 5 mm (calibrated)
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0.64ct Natural Light Purple Sapphire, Oval, VVS-VS, Photo A

0.64ct Natural Light Purple Sapphire, Oval, VVS-VS

Sapphire

0.64ct1 pc
$ 84.15
6.2 x 4.5 mm
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6.51ct Natural Medium Brown Smoky Quartz, Round, VVS-VS, Photo A

6.51ct Natural Medium Brown Smoky Quartz, Round, VVS-VS

Smoky Quartz

6.51ct1 pc
$ 10.71
13 mm (calibrated)
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1.26ctw Natural London Blue Topaz, Oval, VS, Photo A

1.26ctw Natural London Blue Topaz, Oval, VS

Topaz

1.26ct total2 pcs
$ 8.78
6 x 4 mm (calibrated)
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14.01ct Natural Light Pink Rose Quartz, Octagon / Emerald Cut, Transparent, Photo A

14.01ct Natural Light Pink Rose Quartz, Octagon / Emerald Cut, Transparent

Rose Quartz

14.01ct1 pc
$ 76.75
14 x 14 mm (calibrated)
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1.45ct Natural Deep Violet Amethyst, Marquise, VS, Photo A

1.45ct Natural Deep Violet Amethyst, Marquise, VS

Amethyst

1.45ct1 pc
$ 11.12
12 x 6 mm
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3.12ct Natural Pinkish Red Ruby, Round, VS-SI, Photo A

3.12ct Natural Pinkish Red Ruby, Round, VS-SI

Ruby

3.12ct1 pc
$ 279.68
8 mm (calibrated)
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2.07ct Natural Reddish Orange Moonstone, Cushion, Translucent, Photo A

2.07ct Natural Reddish Orange Moonstone, Cushion, Translucent

Moonstone

2.07ct1 pc
$ 4.13
9 x 7 mm (calibrated)
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5.21ct Natural Multicolor Fire Agate, Fancy, Opaque, Photo A

5.21ct Natural Multicolor Fire Agate, Fancy, Opaque

Fire Agate

5.21ct1 pc
$ 73.41
14.5 x 9.5 mm
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2.84ct Natural Light Pink Strawberry Quartz, Oval, Transparent, Photo A

2.84ct Natural Light Pink Strawberry Quartz, Oval, Transparent

Strawberry Quartz

2.84ct1 pc
$ 21.31
11 x 9 mm (calibrated)
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8.82ct Natural Dijon Yellow Apatite, Heart, VS, Photo A
Apatite Product Video (407300)

8.82ct Natural Dijon Yellow Apatite, Heart, VS

Apatite

8.82ct1 pc
$ 333.95
14.1 x 13.2 mm
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1.50ct Natural Medium-Dark Orange Hessonite Garnet, Octagon / Emerald Cut, VS-SI, Photo A

1.50ct Natural Medium-Dark Orange Hessonite Garnet, Octagon / Emerald Cut, VS-SI

Hessonite Garnet

1.50ct1 pc
$ 25.23
7.7 x 5.7 mm
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Why Buy Square Shape 13x13 Mm Gems from GemSelect?

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

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

Posted By Iamnotakrustykrab in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I was able to find what I wanted very easily!

Posted By Lenny in January, 2026
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Overall Rating -> 9 star ratings

Will know more once order received

Posted By Jim in September, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Enjoy viewing the selections. Excellent product

Posted By ToRa.62 in April, 2026
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Overall Rating -> 10 star ratings

Great website, easy to navigate, and loads quickly. Have bought here before, very pleased!

Posted By SallyO in February, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Filters need to be improved but rest of website is great

Posted By Rock hound in December, 2025
Source: Bizrate
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