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Home › Calibrated Gemstones › Square Shape 13x13 mm Gems

Calibrated Square Cut Gemstones in Size 13x13 mm

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9.04ct Natural Multicolor Quartz With Marcasite, Oval, Transparent, Photo A

9.04ct Natural Multicolor Quartz With Marcasite, Oval, Transparent

Quartz With Marcasite

9.04ct1 pc
$ 59.42
15.6 x 12.8 mm
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0.65ctw Natural Light Pink Sapphire, Oval, VVS-VS, Photo A

0.65ctw Natural Light Pink Sapphire, Oval, VVS-VS

Sapphire

0.65ct total2 pcs
$ 61.30
5.7 x 3.8 mm
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3.22ctw Natural Bright Gold Citrine, Square, VS, Photo A

3.22ctw Natural Bright Gold Citrine, Square, VS

Citrine

3.22ct total2 pcs
$ 21.17
7 x 7 mm (calibrated)
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1.60ctw Natural Royal Purple Pink Sapphire, Trillion, VS, Photo A

1.60ctw Natural Royal Purple Pink Sapphire, Trillion, VS

Sapphire

1.60ct total6 pcs
$ 132.33
4 x 4 mm (calibrated)
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0.51ct Natural Medium Magenta Tourmaline, Round, Transparent, Photo A

0.51ct Natural Medium Magenta Tourmaline, Round, Transparent

Tourmaline

0.51ct1 pc
$ 20.32
5 mm (calibrated)
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15.30ct Natural Multicolor Jasper, Marquise, Opaque, Photo A

15.30ct Natural Multicolor Jasper, Marquise, Opaque

Jasper

15.30ct1 pc
$ 16.77
32.8 x 15.8 mm
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0.64ct Natural Medium Pink Sapphire, Fancy, VS, Photo A

0.64ct Natural Medium Pink Sapphire, Fancy, VS

Sapphire

0.64ct1 pc
$ 71.31
7 x 5 mm (calibrated)
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5.47ctw Natural Chocolate Brown Smoky Quartz, Oval, VVS, Photo A

5.47ctw Natural Chocolate Brown Smoky Quartz, Oval, VVS

Smoky Quartz

5.47ct total2 pcs
$ 32.69
10 x 8 mm (calibrated)
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3.18ctw Natural Pale Yellowish Green Prehnite, Oval, Transparent/Translucent, Photo A

3.18ctw Natural Pale Yellowish Green Prehnite, Oval, Transparent/Translucent

Prehnite

3.18ct total2 pcs
$ 8.72
8 x 6.9 mm
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0.70ct Natural Medium Pink Sapphire, Fancy, VS, Photo A

0.70ct Natural Medium Pink Sapphire, Fancy, VS

Sapphire

0.70ct1 pc
$ 78.00
6.6 x 5.7 mm
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1.25ctw Natural Gold Citrine, Pear Shape, VVS-VS, Photo A

1.25ctw Natural Gold Citrine, Pear Shape, VVS-VS

Citrine

1.25ct total2 pcs
$ 8.22
7 x 5 mm (calibrated)
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1.42ct Natural Pinkish Purple Sapphire, Cushion, VS, Photo A
Sapphire Product Video (447717)

1.42ct Natural Pinkish Purple Sapphire, Cushion, VS

Sapphire

1.42ct1 pc
$ 748.84
6.9 x 5.5 mm
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2.26ctw Natural Multicolor Mystic Quartz, Trillion, VVS, Photo A

2.26ctw Natural Multicolor Mystic Quartz, Trillion, VVS

Mystic Quartz

2.26ct total2 pcs
$ 15.75
7 x 7 mm (calibrated)
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0.64ct Natural Multicolor Opal, Pear Shape, Transparent, Photo A

0.64ct Natural Multicolor Opal, Pear Shape, Transparent

Opal

0.64ct1 pc
$ 15.94
7.3 x 5.2 mm
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0.76ct Natural Light Golden Yellow Color-Change Diaspore, Octagon / Emerald Cut, VS-SI, Photo A

0.76ct Natural Light Golden Yellow Color-Change Diaspore, Octagon / Emerald Cut, VS-SI

Color-Change Diaspore

0.76ct1 pc
$ 27.25
7.1 x 3.5 mm
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0.70ct Natural Apricot Orange Clinohumite, Oval, SI, Photo A

0.70ct Natural Apricot Orange Clinohumite, Oval, SI

Clinohumite

0.70ct1 pc
$ 34.86
7 x 5 mm (calibrated)
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0.83ct Natural Yellowish Green Peridot, Oval, VVS-VS, Photo A

0.83ct Natural Yellowish Green Peridot, Oval, VVS-VS

Peridot

0.83ct1 pc
$ 11.57
7 x 5 mm (calibrated)
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3.12ctw Natural Light Orange Moonstone, Trillion, Translucent, Photo A

3.12ctw Natural Light Orange Moonstone, Trillion, Translucent

Moonstone

3.12ct total2 pcs
$ 6.83
8 x 8 mm (calibrated)
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89.65ct Natural Forest Green Moss Agate, Square, Opaque, Photo A

89.65ct Natural Forest Green Moss Agate, Square, Opaque

Moss Agate

89.65ct1 pc
$ 74.41
27.6 x 27.4 mm
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0.87ct Natural Brownish Orange Sphalerite, Round, SI, Photo A

0.87ct Natural Brownish Orange Sphalerite, Round, SI

Sphalerite

0.87ct1 pc
$ 43.33
5.7 mm
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0.59ct Natural Light Yellow Beryl, Oval, VVS-VS, Photo A

0.59ct Natural Light Yellow Beryl, Oval, VVS-VS

Beryl

0.59ct1 pc
$ 11.26
7 x 5 mm (calibrated)
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3.58ctw Natural Warm Brown Smoky Quartz, Round, VS, Photo A

3.58ctw Natural Warm Brown Smoky Quartz, Round, VS

Smoky Quartz

3.58ct total2 pcs
$ 7.85
8 mm (calibrated)
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0.43ct Natural Reddish Orange Sapphire, Oval, VVS, Photo A

0.43ct Natural Reddish Orange Sapphire, Oval, VVS

Sapphire

0.43ct1 pc
$ 22.82
5.8 x 3.8 mm
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0.53ct Natural Reddish Orange Sapphire, Oval, VVS-VS, Photo A

0.53ct Natural Reddish Orange Sapphire, Oval, VVS-VS

Sapphire

0.53ct1 pc
$ 79.18
6 x 4 mm (calibrated)
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1.95ctw Natural Medium Gold Citrine, Square, VVS-VS, Photo A

1.95ctw Natural Medium Gold Citrine, Square, VVS-VS

Citrine

1.95ct total2 pcs
$ 13.60
6 x 6 mm (calibrated)
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16.09ctw Natural Purplish Violet Amethyst, Cushion, VVS-VS, Photo A

16.09ctw Natural Purplish Violet Amethyst, Cushion, VVS-VS

Amethyst

16.09ct total2 pcs
$ 80.13
18.3 x 9.1 mm
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2.37ct Natural Yellowish Green Apatite, Octagon / Emerald Cut, VS, Photo A

2.37ct Natural Yellowish Green Apatite, Octagon / Emerald Cut, VS

Apatite

2.37ct1 pc
$ 96.47
7.5 x 7.3 mm
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4.52ctw Natural Deep Magenta-Pink Rhodolite Garnet, Trillion, VS, Photo A

4.52ctw Natural Deep Magenta-Pink Rhodolite Garnet, Trillion, VS

Rhodolite Garnet

4.52ct total10 pcs
$ 39.62
5 x 5 mm (calibrated)
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4.34ctw Natural Dark Red Pyrope Garnet, Square, VS, Photo A

4.34ctw Natural Dark Red Pyrope Garnet, Square, VS

Pyrope Garnet

4.34ct total10 pcs
$ 33.28
4 x 4 mm (calibrated)
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0.75ct Natural Medium Gold Citrine, Oval, Transparent, Photo A

0.75ct Natural Medium Gold Citrine, Oval, Transparent

Citrine

0.75ct1 pc
$ 5.23
10.1 x 4.1 mm
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31.65ctw Natural Multicolor Labradorite, Oval, Translucent, Photo A

31.65ctw Natural Multicolor Labradorite, Oval, Translucent

Labradorite

31.65ct total2 pcs
$ 63.05
25 x 18 mm (calibrated)
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2.98ct Natural Bluish White Rainbow Moonstone, Round, Transparent, Photo A

2.98ct Natural Bluish White Rainbow Moonstone, Round, Transparent

Rainbow Moonstone

2.98ct1 pc
$ 50.73
9 mm (calibrated)
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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 -> 8 star ratings

It was a good interaction I got a good gemstone for cheap

Posted By Jon in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Would have bought an indigo and selenite, but neither listed. But, you do offer quite a large assortment otherwise.

Posted By JD in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Love, and have always loved, your website.

Posted By Aberabic in July, 2025
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Overall Rating -> 10 star ratings

Took a chance on purchasing my gemstones from Gemselect and was impressed. 10/10

Posted By KT in September, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I had a very easy time navigating the web page and using filters to find what I was looking for. The varied selection was nice to see and pricing is clear and fair.

Posted By Mattick in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Very large selection from affordable to high end I will be coming back to shop again!

Posted By GreenGator in August, 2025
Source: Bizrate
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