Calibrated 4 x 4 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 4 mm x 4 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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Gemstones A-Z

Buy Trillion Shape 4x4 mm Gems

5.27 ct Loose Oval Cut Black Opal, 16.3 x 12.2 mm From Ethiopia

15.63 ct Fancy Rainbow Moonstone, 21.2 x 13 mm From the United States

1.4 carat Square Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 4.9 x 4.8 mm

5.12 ct Yellow Quartz, 8.3 x 8 mm Carved From Brazil

2.47 carat Orange Hessonite Garnet, Cushion loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 8.8 x 6.9 mm

65.52 ct Trillion Chrysocolla, 38.7 x 30.8 mm From Australia

32.88 ct Oval Jasper, 26.5 x 22.7 mm From Indonesia

0.17 ct Blue Apatite, 3.4 mm Round Cut From Madagascar

4.51 ct Yellow Quartz, 9.1 x 8.9 mm Carved From Brazil

1.52 carat Marquise Cut Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 12 x 6.1 mm

5.59 ct Fancy Fire Agate, 15.9 x 8.9 mm From Mexico

1.16 ct Oval Cut Chrysoberyl, 7.1 x 6.1 mm From Sri Lanka

4.85 ct Cushion Onyx, 11 x 10.9 mm From Sri Lanka

15.71 ct Loose Oval Bloodstone, 20.3 x 13.3 mm From Madagascar

29.14 ct Violet Lepidolite, 39.8 x 9.5 mm Pencil Cut From the United States

0.2 ct Oval Chrysoberyl Cat's Eye, 3.4 x 3.3 mm From Sri Lanka

0.43 ct Loose Yellow Sapphire, 4.6 x 4.5 mm Heart Cut From Tanzania

1.07 ct Oval Sillimanite Cat's Eye, 6.5 x 4.8 mm From Madagascar

2.77 ct Loose Baguette Labradorite, 9.2 x 7 mm From Madagascar

0.23 ct Round Cut Iolite, 4.2 mm From Madagascar

2.89 carat Square Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 4.1 x 4 mm

17.74 carat Pear Chalcedony, loose Certified Chalcedony from Brazil, Natural Untreated Gem, 28.4 x 16.1 mm

36.16 ct Cushion Obsidian, 31.5 x 22.1 mm From India

0.81 ct Purple Spinel, 5.8 x 5.7 mm Cushion Cut From Tanzania

1.29 carat Orange Hessonite Garnet, Oval loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 7.4 x 5.9 mm

8.32 carat Uvarovite Garnet Drusy, loose Certified Uvarovite Garnet Drusy from Russia, Natural Untreated Gem, 15.8 x 11.5 mm

1.14 carat Opal, loose Certified Opal from Ethiopia, Natural Gem, 8.5 x 5.7 mm

2.86 ct Blue Green Grandidierite, 11.4 x 7.6 mm Oval Cut From Madagascar

2.3 carat White Zircon, Oval loose Zircon from Cambodia, Natural Gems, 7.1 x 5.1 mm

13.75 ct Black Spinel, 11.8 mm Round Rose Cut From Thailand

4.68 ct Oval Sillimanite Cat's Eye, 7.5 x 5 mm From Madagascar

3.85 carat Sky Blue Topaz, Oval loose Topaz from Brazil, Natural Gems, 9 x 7 mm

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