Calibrated Square Cut Gemstones in Size 13x13 mm

Some people by gems by color or price, but for many, it is best to buy gems by shape and size - especially if you're in need of a gem to replace a previous item that was lost or damaged. Calibrated Square shapes, facet cut and cabochon gems available now in 13 mm x 13 mm size range. Shop a wide range of calibrated gemstones by size online at wholesale from GemSelect.

As a general guideline, when it comes to 'calibrated' gems, they are not meant nor expected to be cut to exact measurements. For calibrated gemstones weighing under one carat, most jewelry settings will accommodate a gem which is within 0.2 mm of the calibrated size in order to fit a standard setting. For gemstones that weigh over one carat, a larger variance is acceptable, often around 0.3 mm or slightly higher even. This small variance can usually be accommodated for standard style settings. Round-cut gemstones should also have a greater variance in acceptable size when it comes to calibration; in fact it is usually possible to mount a round stone of any size in the closest standard setting.

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I am of the opinion that the company gem select cares about the product beautiful gems it sells and the cost of the gem I purchased was small i was treated as if it cost a lot of money and product was described in detail and i felt good about the little stones i had ordered.

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Gemstones A-Z

Buy Square Shape 13x13 mm Gems

11.82 ct Oval Pietersite, 22.4 x 16.5 mm From Namibia

1.95 carat Oval Ruby, loose Certified Ruby from Madagascar, Natural Gems, 6.7 x 4.9 mm

0.74 carat Round Grossularite Garnet, loose Certified Grossularite Garnet from Tanzania, Natural Untreated Gem, 5.3 mm

7.73 ct Oval Tiger's Eye, 15.8 x 12 mm From India

26.18 ct Drilled Sphere Jasper, 12.3 mm From India

11.28 ct Octagon Cut Smoky Quartz, 13.6 x 13.6 mm From Brazil

5.09 ct Green Jade, 12.4 x 10.3 mm Oval Cut From Myanmar

2.23 carat Sky Blue Topaz, Round loose Topaz from Brazil, Natural Gem, 8.1 mm

11.07 ct Cushion Coral, 14.5 x 11.5 mm From Mexico

4.4 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gem, 13.2 x 9.7 mm

0.48 carat Yellow Citrine, Cushion loose Citrine from Brazil, Natural Untreated Gem, 5 x 5 mm

9.21 ct Oval Larimar, 16.1 x 12.1 mm From the Dominican Republic

0.72 carat Yellow Sapphire, Heart loose Sapphire from Tanzania, Natural Gem, 5.5 x 5.5 mm

3.71 carat Yellow Citrine, Round loose Citrine from Brazil, Natural Untreated Gems, 8.2 mm

4.13 carat White Zircon, Oval loose Zircon from Cambodia, Natural Gems, 6.1 x 4.1 mm

1.29 ct Cushion Cut Color-Change Diaspore, 8.5 x 5.6 mm From Turkey

3.45 carat Pear Tiger's Eye, loose Certified Tiger's Eye from Thailand, Natural Untreated Gem, 10.1 x 9.9 mm

2.14 carat Pear Rutile Quartz, loose Certified Rutile Quartz from India, Natural Untreated Gem, 10 x 7 mm

263.05 ct Oval Star Rose Quartz, 39.1 x 35 mm From South Africa

0.16 carat Baguette Cut Emerald, loose Certified Emerald from Colombia, Natural Untreated Gem, 3.3 x 2.6 mm

8.31 ct Oval Strawberry Quartz, 10.1 x 8.1 mm From Russia

3.64 ct Orange Andesine Labradorite, 10.9 x 8.9 mm Oval Cut From Congo

0.96 ct Blue Kyanite, 6.9 x 5 mm Oval Cut From Nepal

7.57 ct Amethyst Geode Slice, 18.3 x 14.1 mm From Brazil

2.83 carat Trillion Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 10 x 9.9 mm

3.42 carat Square Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 4.1 x 4.1 mm

11.27 ct Oval Star Ruby, 13.5 x 12.1 mm From Madagascar

3.11 carat Yellow Citrine, Square loose Citrine from Brazil, Natural Untreated Gem, 8.7 x 8.7 mm

0.65 ct Gray Spinel, 6.5 x 4.8 mm Cushion Cut From Tanzania

1.76 carat Green Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 23.7 x 3.1 mm

1.13 carat Orange Zircon, Diamond-Cut loose Zircon from Cambodia, Natural Untreated Gem, 5.9 mm

0.4 carat Round Cabochon Emerald, loose Certified Emerald from Colombia, Natural Gem, 4.9 mm

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