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

2.42 carat Oval Opal, loose Certified Opal from Australia, Natural Untreated Gem, 11.8 x 9.3 mm

2.68 ct Loose Briolette Sapphire, 5.7 mm From Madagascar

19.93 ct White Jadeite, 21.9 x 18 mm Oval Cut From Myanmar

0.78 carat London Blue Topaz, Pear Shape loose Topaz from Brazil, Natural Gem, 7 x 5 mm

13.06 carat Black Tourmaline, Oval loose Tourmaline from Mozambique, Natural Untreated Gem, 15.9 x 12.9 mm

5.43 ct Orange Sunstone, 14.1 x 10.1 mm Oval Cut From India

0.73 carat Blue Sapphire, Diamond-Cut loose Sapphire from Madagascar, Natural Gem, 5.4 mm

61.96 ct Yellow Quartz, 30.7 x 23.8 mm Oval Concave Cut From Brazil

13.94 ct Black Spinel, 12.1 x 11.7 mm Heart Rose Cut From Thailand

35.32 ct Fancy Jasper, 27.2 x 20.4 mm From Indonesia

0.03 ct Blue Diamond, 1.9 mm Diamond Cut From India

3.9 ct Brown Moonstone, 10.5 x 10.4 mm Carved From India

7.54 carat Pear Rutile Quartz, loose Certified Rutile Quartz from India, Natural Untreated Gem, 15 x 11 mm

4.8 carat Pear Shape Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 12.4 x 10.9 mm

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

1.64 ct Oval Carnelian, 9 x 7.1 mm From India

7.14 ct Round Labradorite, 9.2 mm From Madagascar

3.73 carat Yellow Apatite, Pear Shape loose Apatite from Madagascar, Natural Untreated Gem, 11.2 x 9 mm

2 carat Blue Sapphire, Oval loose Sapphire from Sri Lanka, Natural Gems, 5.2 x 4.2 mm

0.68 carat Blue Sapphire, Marquise-Cut loose Sapphire from Madagascar, Natural Gem, 8.1 x 4 mm

6.02 ct Loose Baguette Tiger's Eye, 12.1 x 10.1 mm From Thailand

3.41 carat Sky Blue Topaz, Pear Shape loose Topaz from Brazil, Natural Gems, 6.2 x 4.2 mm

6.12 ct Yellow Quartz, 14.3 x 8.1 mm Octagon Cut From Brazil

0.58 ct Purple Spinel, 5.5 x 3.9 mm Cushion Cut From Tanzania

4.82 carat Carved Round Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 11.3 mm

13.31 ct Green Agate, 12.9 x 11.2 mm Oval Cut From India

0.51 carat London Blue Topaz, Oval loose Topaz from Brazil, Natural Gem, 5.9 x 4 mm

0.93 carat Orange Spessartite Garnet, Oval loose Spessartite Garnet from Mozambique, Natural Untreated Gems, 5.1 x 4 mm

2.83 ct Oval Prehnite, 9.3 x 8.8 mm From South Africa

1.11 ct Oval Sillimanite Cat's Eye, 6.9 x 4.8 mm From Madagascar

11.82 carat Black Tourmaline, Oval loose Tourmaline from Tanzania, Natural Untreated Gems, 12.1 x 10.2 mm

2.81 carat Sky Blue Topaz, Trillion loose Topaz from Brazil, Natural Gems, 5.2 x 5.2 mm

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