Calibrated 6 x 4 mm Oval Shape Natural Loose Gemstones: GemSelect

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 oval shapes, facet cut and cabochon gems available now in 6 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 usually 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 round shape settings will allow 0.3 mm or slightly higher even. This small variance can usually be accommodated for most 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 Oval Shape 6x4 mm Gems

0.93 carat Orange Hessonite Garnet, Cushion loose Hessonite Garnet from Sri Lanka, Natural Untreated Gem, 5.2 x 5.2 mm

1.64 carat Orange Hessonite Garnet, Oval loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 7.9 x 6.6 mm

24.33 ct Loose Blue Green Turquoise, 22.4 x 15.5 mm Oval Cut From the United States

7.18 ct Carved Prehnite, 16.3 x 9.9 mm From South Africa

1.63 carat Yellow Citrine, Pear Shape loose Citrine from Brazil, Natural Untreated Gem, 10.2 x 7.1 mm

1.04 ct Loose Round Pietersite, 7.1 mm From Namibia

0.73 carat Blue Sapphire, Marquise-Cut loose Sapphire from Madagascar, Natural Gem, 8.1 x 3.9 mm

12.93 carat Cushion Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 15.1 x 15 mm

3.53 carat Round Labradorite, loose Certified Labradorite from Madagascar, Natural Untreated Gem, 9.1 mm

6.41 ct Pink Azotic Topaz, 12.1 x 10.2 mm Cushion Cut From Brazil

49.07 ct Oval Hematite, 21.3 x 16 mm From Brazil

1.23 carat Green Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 16.1 x 3.4 mm

14.69 ct Yellow Quartz, 20.1 x 15.2 mm Cushion Checkerboard From Brazil

8.25 carat White Topaz, Square loose Topaz from Brazil, Natural Untreated Gems, 5 x 4.9 mm

1.36 carat Orange Zircon, Diamond-Cut loose Zircon from Cambodia, Natural Untreated Gem, 6.1 mm

41.01 ct Oval Rhodochrosite, 25.2 x 18.1 mm From South Africa

36.66 ct Fancy Jasper, 45.9 x 26.3 mm From Indonesia

3.92 ct Oval Cat's Eye Opal, 10.4 x 8.7 mm From Madagascar

21.32 ct Oval Rainbow Moonstone, 25.2 x 6.3 mm From the United States

4.18 ct Round Cut Smoky Quartz, 10.6 mm From Brazil

12.15 carat Cameo Mother of Pearl, loose Certified Mother of Pearl from China, Natural Gem, 24.7 mm

3.18 carat Square Rhodolite Garnet, loose Certified Rhodolite Garnet from Mozambique, Natural Untreated Gems, 5.1 x 5.1 mm

2.48 carat Swiss Blue Topaz, Marquise-Cut loose Topaz from Brazil, Natural Gems, 10.1 x 5.2 mm

34.84 carat Pear Ruby-Zoisite, loose Certified Ruby-Zoisite from Tanzania, Natural Untreated Gem, 24.5 x 22.8 mm

2.78 carat Pink Tourmaline, Emerald Cut loose Tourmaline from Tanzania, Natural Untreated Gem, 7.3 x 7.1 mm

2.21 carat Violet Tanzanite, Pear Shape loose Tanzanite from Tanzania, Natural Gems, 5.1 x 3.1 mm

1.02 carat Yellow Citrine, Emerald Cut loose Citrine from Brazil, Natural Untreated Gem, 12.2 x 4 mm

1.65 ct Loose Orange Hessonite Garnet, 7.6 x 6.4 mm Oval Cut From Madagascar

2.11 ct Red Coral, 11.9 x 5 mm Oval Cut From Australia

27.22 ct Oval Rose Cut Onyx, 25.6 x 18.7 mm From Sri Lanka

1.05 ct Oval Sillimanite Cat's Eye, 7.8 x 5.2 mm From Madagascar

8.68 ct Yellow Quartz, 14.5 x 11.1 mm Oval Cut From Brazil

Gemstone Information

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