Calibrated 8 x 8 mm Trillion Shape Loose Natural Gemstones from Ge...

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 Trillion shapes, facet cut and cabochon gems available now in 8 mm x 8mm 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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Gemstones A-Z

Buy Trillion Shape 8x8 mm Gems

0.2 ct White Diamond, 2.8 mm Diamond Cut From Brazil

4.77 carat Pear Shape Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 7 x 5.1 mm

0.77 carat Emerald Cut Emerald, loose Certified Emerald from Colombia, Natural Gem, 5.5 x 4.9 mm

5.87 ct Purple Kunzite, 15.9 x 7.3 mm Octagon Cut From Afghanistan

41.61 ct Drilled Sphere Rhodochrosite, 16.3 mm From South Africa

4.7 ct Yellow Agate, 11.8 x 10.3 mm Oval Cut From India

2.07 carat Sky Blue Topaz, loose Topaz from Brazil, Natural Gems, 7.1 x 5.2 mm

1.8 carat Orange Hessonite Garnet, Oval loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 8.3 x 6.9 mm

0.75 carat Blue Sapphire, Marquise-Cut loose Sapphire from Madagascar, Natural Gem, 8 x 3.8 mm

11.3 carat Ammolite, loose Certified Ammolite from Canada, Natural Gem, 21.5 x 11.5 mm

2.77 carat White Topaz, Cushion loose Topaz from Brazil, Natural Untreated Gems, 4.5 x 4.5 mm

17.97 ct Green Amazonite, 19.9 x 10.1 mm Marquise Cut From Madagascar

1.96 ct Blue Green Grandidierite, 9 x 7 mm Oval Cut From Madagascar

1.22 ct Blue Kyanite, 7 x 4.9 mm Oval Cut From Nepal

1.27 ct Loose White Sapphire, 4.2 mm Diamond Cut From Madagascar

8.34 carat Oval Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gems, 12.2 x 8 mm

8.26 carat White Topaz, Square loose Topaz from Brazil, Natural Untreated Gems, 5.2 x 5.2 mm

3.88 ct Green Agate, 17.6 x 10.1 mm Carved From India

14.44 carat Emerald Cut Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 18.5 x 13.3 mm

0.6 ct Oval Cut Fire Opal, 7.9 x 6.1 mm From Mexico

0.87 carat Pear Shape Peridot, loose Certified Peridot from China, Natural Untreated Gems, 6.2 x 4.1 mm

11.87 ct Diamond Cut Smoky Quartz, 14.9 mm From Brazil

35.49 ct Baguette Jasper, 23.9 x 16.6 mm From Mexico

5.84 carat Pear Shape Smoky Quartz, loose Certified Smoky Quartz from Brazil, Natural Untreated Gem, 15.1 x 11 mm

31.33 carat Pear Tiger's Eye Matrix, loose Certified Tiger's Eye Matrix from Mexico, Natural Untreated Gem, 28.1 x 20.2 mm

34.07 ct Oval Charoite, 30.2 x 22.2 mm From Russia

2.7 ct Oval Tiger's Eye, 8.1 x 6.1 mm From Thailand

1.66 carat Swiss Blue Topaz, Pear Shape loose Topaz from Brazil, Natural Gems, 7.1 x 4.9 mm

4.58 carat Pear Shape Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 14.9 x 10.1 mm

12.77 carat Pear Obsidian, loose Certified Obsidian from the United States, Natural Untreated Gem, 27.8 x 13 mm

1.78 carat Marquise Cut Opal, loose Certified Opal from Ethiopia, Natural Untreated Gem, 12.1 x 6 mm

7.67 carat White Zircon, Oval loose Zircon from Cambodia, Natural Gems, 6.1 x 4.2 mm

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