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Home › Calibrated Gemstones › Square Shape 13x13 mm Gems

Calibrated Square Cut Gemstones in Size 13x13 mm

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1.71ct Natural Light Pink Kunzite, Octagon / Emerald Cut, VS, Photo A

1.71ct Natural Light Pink Kunzite, Octagon / Emerald Cut, VS

Kunzite

1.71ct1 pc
$ 42.58
6.7 x 5.6 mm
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0.47ct Natural Intense Purple Sapphire, Oval, VVS-VS, Photo A

0.47ct Natural Intense Purple Sapphire, Oval, VVS-VS

Sapphire

0.47ct1 pc
$ 61.79
5.9 x 4.2 mm
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0.64ct Natural Deep Crimson Ruby, Round, VS-SI, Photo A

0.64ct Natural Deep Crimson Ruby, Round, VS-SI

Ruby

0.64ct1 pc
$ 205.79
5 mm (calibrated)
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4.47ctw Natural Sky Blue Topaz, Oval, VVS-VS, Photo A

4.47ctw Natural Sky Blue Topaz, Oval, VVS-VS

Topaz

4.47ct total4 pcs
$ 24.53
7 x 5 mm (calibrated)
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4.46ct Natural Gold Apatite, Octagon / Emerald Cut, VS, Photo A

4.46ct Natural Gold Apatite, Octagon / Emerald Cut, VS

Apatite

4.46ct1 pc
$ 146.59
11 x 9 mm (calibrated)
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1.18ct Natural Rapberry Red Rhodolite Garnet, Oval, VVS, Photo A

1.18ct Natural Rapberry Red Rhodolite Garnet, Oval, VVS

Rhodolite Garnet

1.18ct1 pc
$ 41.13
7.5 x 5.4 mm
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1.26ct Natural Medium Golden Citrine, Heart, VS, Photo A

1.26ct Natural Medium Golden Citrine, Heart, VS

Citrine

1.26ct1 pc
$ 9.66
7 x 7 mm (calibrated)
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8.17ct Natural Bi-color Ametrine, Oval, VVS-VS, Photo A

8.17ct Natural Bi-color Ametrine, Oval, VVS-VS

Ametrine

8.17ct1 pc
$ 48.82
15.6 x 11.5 mm
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38.30ct Natural Pale Yellow Spodumene, Cushion, VVS, Photo A
Spodumene Product Video (758526)

38.30ct Natural Pale Yellow Spodumene, Cushion, VVS

Spodumene

38.30ct1 pc
$ 689.40
20.4 x 18.9 mm
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4.09ct Natural Dark Red Almandine Garnet, Oval, VS, Photo A

4.09ct Natural Dark Red Almandine Garnet, Oval, VS

Almandine Garnet

4.09ct1 pc
$ 122.21
11.6 x 8.5 mm
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7.90ct Natural Cherry Pink Tone Kunzite, Pear Shape, VVS-VS, Photo A

7.90ct Natural Cherry Pink Tone Kunzite, Pear Shape, VVS-VS

Kunzite

7.90ct1 pc
$ 208.51
15.8 x 9.6 mm
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2.43ctw Natural Medium Red Rhodolite Garnet, Square, VS, Photo A

2.43ctw Natural Medium Red Rhodolite Garnet, Square, VS

Rhodolite Garnet

2.43ct total4 pcs
$ 21.27
4.8 x 4.7 mm
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1.33ct Natural Orange-Gold Citrine, Pear Shape, VVS-VS, Photo A

1.33ct Natural Orange-Gold Citrine, Pear Shape, VVS-VS

Citrine

1.33ct1 pc
$ 10.20
7.5 x 8.1 mm
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5.50ct Natural Light Cherry Pink Rose Quartz, Octagon / Emerald Cut, Transparent, Photo A

5.50ct Natural Light Cherry Pink Rose Quartz, Octagon / Emerald Cut, Transparent

Rose Quartz

5.50ct1 pc
$ 30.13
10.5 x 10.5 mm
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0.18ct Natural L Diamond, Round, VVS-VS, Photo A

0.18ct Natural L Diamond, Round, VVS-VS

Diamond

0.18ct1 pc
$ 302.21
3.5 mm (calibrated)
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1.29ct Natural Medium Pink Tourmaline, Oval, Transparent, Photo A

1.29ct Natural Medium Pink Tourmaline, Oval, Transparent

Tourmaline

1.29ct1 pc
$ 22.11
7.5 x 5.8 mm
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2.72ct Natural Warm White Zircon, Oval, VVS, Photo A
Zircon Product Video (378030)

2.72ct Natural Warm White Zircon, Oval, VVS

Zircon

2.72ct1 pc
$ 73.64
9 x 6 mm (calibrated)
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7.02ct Natural Multicolor Fire Agate, Fancy, Translucent, Photo A

7.02ct Natural Multicolor Fire Agate, Fancy, Translucent

Fire Agate

7.02ct1 pc
$ 61.06
18 x 8.8 mm
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3.77ct Natural Bubblegum Pink Rose Quartz, Octagon / Emerald Cut, Transparent, Photo A

3.77ct Natural Bubblegum Pink Rose Quartz, Octagon / Emerald Cut, Transparent

Rose Quartz

3.77ct1 pc
$ 20.66
9 x 9 mm (calibrated)
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0.70ct Natural Rose Pink Tone Morganite, Oval, VS-SI, Photo A

0.70ct Natural Rose Pink Tone Morganite, Oval, VS-SI

Morganite

0.70ct1 pc
$ 29.05
7.3 x 5.5 mm
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8.40ctw Natural Multicolor Mystic Quartz, Cushion, VVS, Photo A

8.40ctw Natural Multicolor Mystic Quartz, Cushion, VVS

Mystic Quartz

8.40ct total2 pcs
$ 50.20
10 x 10 mm (calibrated)
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2.60ct Natural Dark Orange-Gold Citrine, Oval, VVS-VS, Photo A

2.60ct Natural Dark Orange-Gold Citrine, Oval, VVS-VS

Citrine

2.60ct1 pc
$ 19.94
11.5 x 8.1 mm
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25.40ctw Natural Multicolor Jasper, Cushion, Opaque, Photo A

25.40ctw Natural Multicolor Jasper, Cushion, Opaque

Jasper

25.40ct total2 pcs
$ 14.43
23.1 x 13.1 mm
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2.62ct Natural Medium Pink Kunzite, Octagon / Emerald Cut, VS, Photo A
Kunzite Product Video (694817)

2.62ct Natural Medium Pink Kunzite, Octagon / Emerald Cut, VS

Kunzite

2.62ct1 pc
$ 65.24
9.6 x 5.1 mm
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4.81ct Natural Multicolor Opal, Pear Shape, Translucent, Photo A

4.81ct Natural Multicolor Opal, Pear Shape, Translucent

Opal

4.81ct1 pc
$ 119.77
13.1 x 10.1 mm
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1.19ct Natural Lively Green Sphene, Oval, Transparent, Photo A

1.19ct Natural Lively Green Sphene, Oval, Transparent

Sphene

1.19ct1 pc
$ 5.93
6.7 x 6.2 mm
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21.64ct Natural Pale Yellow Quartz, Flower Cut, Transparent, Photo A

21.64ct Natural Pale Yellow Quartz, Flower Cut, Transparent

Quartz

21.64ct1 pc
$ 71.12
25 x 18 mm (calibrated)
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8.30ct Natural Multicolor Fire Agate, Fancy, Opaque, Photo A

8.30ct Natural Multicolor Fire Agate, Fancy, Opaque

Fire Agate

8.30ct1 pc
$ 63.83
14.8 x 11.5 mm
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0.71ct Natural Pink Spinel, Cushion, VS, Photo A

0.71ct Natural Pink Spinel, Cushion, VS

Spinel

0.71ct1 pc
$ 25.39
5.4 x 5.3 mm
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1.05ctw Natural Scarlet Red Pyrope Garnet, Square, VS, Photo A

1.05ctw Natural Scarlet Red Pyrope Garnet, Square, VS

Pyrope Garnet

1.05ct total2 pcs
$ 8.06
4.2 x 4.1 mm
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6.73ct Natural Multicolor Agate, Fancy, Translucent, Photo A

6.73ct Natural Multicolor Agate, Fancy, Translucent

Agate

6.73ct1 pc
$ 11.79
16.2 x 6.3 mm
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2.78ctw Natural Light Green Peridot, Round, VVS-VS, Photo A

2.78ctw Natural Light Green Peridot, Round, VVS-VS

Peridot

2.78ct total6 pcs
$ 45.68
4.5 mm (calibrated)
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Why Buy Square Shape 13x13 Mm Gems from GemSelect?

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Overall Rating -> 10 star ratings

The website was very easy to use.

Posted By Garnet in January, 2026
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Great site for finding specific stones and sizes for individual pieces of jewelry

Posted By Designer in December, 2025
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Overall Rating -> 10 star ratings

Very good, wide selection of good prices gems.

Posted By UncutGemz in September, 2026
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Overall Rating -> 10 star ratings

Maneuvering through the website was easy and enjoyable. I have ordered from GemSelect before and that experience was also pleasant.

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

Easy and functional

Posted By Dessa in March, 2026
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Overall Rating -> 8 star ratings

The website was easy to use and there were a lot of good options, I was satisfied.

Posted By Brielly in January, 2026
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