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Home › Calibrated Gemstones › Square Shape 13x13 mm Gems

Calibrated Square Cut Gemstones in Size 13x13 mm

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1.79ct Natural Cantaloupe Orange Moonstone, Square, Translucent, Photo A

1.79ct Natural Cantaloupe Orange Moonstone, Square, Translucent

Moonstone

1.79ct1 pc
$ 3.59
7 x 7 mm (calibrated)
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14.11ct Natural Multicolor Agate, Oval, Opaque, Photo A

14.11ct Natural Multicolor Agate, Oval, Opaque

Agate

14.11ct1 pc
$ 13.35
14 x 14 mm (calibrated)
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0.55ct Natural Yellowish Gold Beryl, Oval, VVS, Photo A

0.55ct Natural Yellowish Gold Beryl, Oval, VVS

Beryl

0.55ct1 pc
$ 13.70
6.8 x 4.8 mm
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0.58ct Natural Orange Brown Sphalerite, Round, VS-SI, Photo A

0.58ct Natural Orange Brown Sphalerite, Round, VS-SI

Sphalerite

0.58ct1 pc
$ 28.88
4.7 mm
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8.68ct Natural Chocolate Brown Smoky Quartz, Octagon / Emerald Cut, VVS, Photo A

8.68ct Natural Chocolate Brown Smoky Quartz, Octagon / Emerald Cut, VVS

Smoky Quartz

8.68ct1 pc
$ 16.18
12.5 x 12.5 mm
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29.99ct Natural Multicolor Jasper, Oval, Opaque, Photo A

29.99ct Natural Multicolor Jasper, Oval, Opaque

Jasper

29.99ct1 pc
$ 17.41
35.3 x 21.1 mm
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9.66ctw Natural Golden Citrine, Oval, VVS-VS, Photo A

9.66ctw Natural Golden Citrine, Oval, VVS-VS

Citrine

9.66ct total2 pcs
$ 74.09
12 x 10 mm (calibrated)
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0.97ct Natural Earthy Green Tourmaline, Baguette, VVS, Photo A

0.97ct Natural Earthy Green Tourmaline, Baguette, VVS

Tourmaline

0.97ct1 pc
$ 33.81
15 x 3 mm
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2.21ct Natural Light Brown Smoky Quartz, Oval, VVS, Photo A

2.21ct Natural Light Brown Smoky Quartz, Oval, VVS

Smoky Quartz

2.21ct1 pc
$ 15.40
9.5 x 7.7 mm
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0.70ct Natural Medium Light-Golden Citrine, Pear Shape, VVS, Photo A

0.70ct Natural Medium Light-Golden Citrine, Pear Shape, VVS

Citrine

0.70ct1 pc
$ 3.49
7 x 5 mm (calibrated)
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0.46ct Natural Orange Red Sapphire, Oval, VVS, Photo A

0.46ct Natural Orange Red Sapphire, Oval, VVS

Sapphire

0.46ct1 pc
$ 24.25
6 x 4 mm (calibrated)
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1.02ct Natural Pale Yellow Color-Change Diaspore, Marquise, VS-SI, Photo A

1.02ct Natural Pale Yellow Color-Change Diaspore, Marquise, VS-SI

Color-Change Diaspore

1.02ct1 pc
$ 54.35
11 x 4.7 mm
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3.69ctw Natural Multicolor Blue Mystic Quartz, Trillion, VVS-VS, Photo A

3.69ctw Natural Multicolor Blue Mystic Quartz, Trillion, VVS-VS

Mystic Quartz

3.69ct total2 pcs
$ 22.05
8 x 8 mm (calibrated)
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1.00ct Natural Deep Orange-Gold Sapphire, Round, VVS, Photo A

1.00ct Natural Deep Orange-Gold Sapphire, Round, VVS

Sapphire

1.00ct1 pc
$ 197.21
5.5 mm (calibrated)
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6.48ctw Natural Sky Blue Topaz, Square, VVS-VS, Photo A

6.48ctw Natural Sky Blue Topaz, Square, VVS-VS

Topaz

6.48ct total2 pcs
$ 35.50
8 x 8 mm (calibrated)
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38.34ct Natural Silver Gray Hematite, Round, Opaque, Photo A

38.34ct Natural Silver Gray Hematite, Round, Opaque

Hematite

38.34ct1 pc
$ 25.20
21.6 mm
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0.66ct Natural Multicolor Green Tourmaline, Octagon / Emerald Cut, VS-SI, Photo A

0.66ct Natural Multicolor Green Tourmaline, Octagon / Emerald Cut, VS-SI

Tourmaline

0.66ct1 pc
$ 32.87
6 x 3.7 mm
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3.21ctw Natural Sky Blue Topaz, Pear Shape, VVS-VS, Photo A

3.21ctw Natural Sky Blue Topaz, Pear Shape, VVS-VS

Topaz

3.21ct total4 pcs
$ 17.55
7 x 5 mm (calibrated)
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4.10ct Natural Orange-Gold Citrine, Octagon / Emerald Cut, VVS-VS, Photo A

4.10ct Natural Orange-Gold Citrine, Octagon / Emerald Cut, VVS-VS

Citrine

4.10ct1 pc
$ 31.44
11 x 9 mm (calibrated)
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6.45ct Natural Caramel Brown Smoky Quartz, Flower Cut, Transparent, Photo A

6.45ct Natural Caramel Brown Smoky Quartz, Flower Cut, Transparent

Smoky Quartz

6.45ct1 pc
$ 23.96
14.2 x 10.2 mm
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0.44ct Natural Medium Gold Citrine, Heart, VVS, Photo A

0.44ct Natural Medium Gold Citrine, Heart, VVS

Citrine

0.44ct1 pc
$ 3.50
5.2 x 5.2 mm
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0.31ct Natural Medium light Green Emerald, Oval, VS, Photo A

0.31ct Natural Medium light Green Emerald, Oval, VS

Emerald

0.31ct1 pc
$ 30.88
5.3 x 3.4 mm
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2.18ct Natural Black Cat's Eye Scapolite, Round, Translucent, Photo A

2.18ct Natural Black Cat's Eye Scapolite, Round, Translucent

Cat's Eye Scapolite

2.18ct1 pc
$ 11.94
8.5 mm (calibrated)
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0.30ct Natural Black Diamond, Square, Opaque, Photo A

0.30ct Natural Black Diamond, Square, Opaque

Diamond

0.30ct1 pc
$ 149.40
3 x 3 mm (calibrated)
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1.91ctw Natural Medium Orange Sapphire, Pear Shape, VS, Photo A
Sapphire Product Video (287324)

1.91ctw Natural Medium Orange Sapphire, Pear Shape, VS

Sapphire

1.91ct total4 pcs
$ 52.31
6 x 4 mm (calibrated)
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1.32ct Natural Dark Blue Kyanite, Oval, SI, Photo A

1.32ct Natural Dark Blue Kyanite, Oval, SI

Kyanite

1.32ct1 pc
$ 32.87
7 x 5 mm (calibrated)
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2.15ct Natural Light Golden-Yellow Beryl, Oval, VVS, Photo A

2.15ct Natural Light Golden-Yellow Beryl, Oval, VVS

Beryl

2.15ct1 pc
$ 42.83
10 x 8 mm (calibrated)
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6.75ct Natural Deep Violet Amethyst, Pear Shape, VVS-VS, Photo A

6.75ct Natural Deep Violet Amethyst, Pear Shape, VVS-VS

Amethyst

6.75ct1 pc
$ 47.06
16 x 12 mm (calibrated)
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1.44ct Natural Medium Green Tourmaline, Octagon / Emerald Cut, VVS-VS, Photo A

1.44ct Natural Medium Green Tourmaline, Octagon / Emerald Cut, VVS-VS

Tourmaline

1.44ct1 pc
$ 48.60
20.7 x 3 mm
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1.75ct Natural Deep Iris Violet Amethyst, Pear Shape, VVS-VS, Photo A

1.75ct Natural Deep Iris Violet Amethyst, Pear Shape, VVS-VS

Amethyst

1.75ct1 pc
$ 13.43
10 x 7 mm (calibrated)
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0.64ct Natural Golden Sapphire, Pear Shape, VS, Photo A

0.64ct Natural Golden Sapphire, Pear Shape, VS

Sapphire

0.64ct1 pc
$ 34.73
5.8 x 4.9 mm
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0.14ctw Natural Black Diamond, Square, Opaque, Photo A

0.14ctw Natural Black Diamond, Square, Opaque

Diamond

0.14ct total2 pcs
$ 69.72
2 x 2 mm (calibrated)
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Why Buy Square Shape 13x13 Mm Gems from GemSelect?

GemSelect Certified Store Reviews

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Overall Rating -> 9 star ratings

Very easy to navigate with a great selection.

Posted By Bar181 in August, 2025
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Overall Rating -> 10 star ratings

Very good

Posted By Niska in August, 2025
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Overall Rating -> 10 star ratings

The site provided lots of detail, factual data, and good photos. I also like the availability of searching by price range as well as by the type of stone.

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

All items were delivered on time with all items meeting or exceeding my expectations. Cut, clarity and color were very close to the photos and description.

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

I love the products. I've bought them as gifts and people love my gifts

Posted By Love it! in February, 2026
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Overall Rating -> 10 star ratings

Easy process.

Posted By Crafty Seabee in March, 2026
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