Calibrated 9 mm Round Shape Loose Natural Gemstones from 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 Round shapes, facet cut and cabochon gems available now in 9 mm diameter 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 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 was looking for ammolite for my husband. Other websites are not always clear about whether they have genuine ammolite or simulated ammolite. I have purchased from GemSelect before and trust that the stones are genuine. Finding the stones I want is easy, and I love all of the search filter options!

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Gemstones A-Z

Buy Round Shape 9mm Gems

1.9 carat Blue Tanzanite, Oval loose Tanzanite from Tanzania, Natural Gem, 8.1 x 6.2 mm

10.65 carat Black Tourmaline, Oval loose Tourmaline from Mozambique, Natural Untreated Gem, 15.1 x 12.4 mm

2.31 carat Oval Opal, loose Certified Opal from Ethiopia, Natural Untreated Gem, 11 x 9 mm

1.58 carat Marquise Cut Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 9.9 x 5 mm

0.02 ct Loose Green Diamond, 1.8 mm Diamond Cut From India

1.5 carat Blue Tanzanite, Oval loose Tanzanite from Tanzania, Natural Gem, 7.8 x 6.1 mm

0.25 carat Yellow Spessartite Garnet, Oval loose Spessartite Garnet from Mozambique, Natural Untreated Gem, 3.9 x 3.2 mm

5.33 carat Pear Shape Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 7.2 x 5.2 mm

75.73 ct Blue Sodalite, 37.4 x 29.3 mm Oval Cut From Australia

0.84 carat London Blue Topaz, Marquise-Cut loose Topaz from Brazil, Natural Gems, 7.1 x 3.4 mm

36.84 ct Pencil Cut Tiger's Eye, 34.5 x 11.3 mm From Thailand

1.51 carat Pear Shape Rainbow Moonstone, loose Certified Rainbow Moonstone from India, Natural Untreated Gems, 5.2 x 4.9 mm

2.46 carat Sky Blue Topaz, Round loose Topaz from Brazil, Natural Gem, 8.4 mm

0.77 ct Blue Green Apatite, 6.9 x 5.1 mm Oval Cut From Madagascar

1.02 ct Oval Onyx, 7.8 x 5.9 mm From Sri Lanka

15.85 ct Carved Ruby-Zoisite, 15.3 x 14.1 mm From Tanzania

17.23 carat Pear Rutile Quartz, loose Certified Rutile Quartz from India, Natural Untreated Gem, 21.5 x 15.8 mm

0.05 ct Blue Diamond, 2.3 mm Diamond Cut From India

18.46 ct Marquise Rainbow Moonstone, 26.9 x 11.2 mm From the United States

1.66 carat Orange Hessonite Garnet, Oval loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 7.9 x 6.5 mm

83.34 carat Pear Psilomelane Dendrite, loose Certified Psilomelane Dendrite from Mexico, Natural Untreated Gem, 54.9 x 31 mm

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

0.24 carat Round Ruby, loose Certified Ruby from Myanmar, Natural Gem, 3.8 mm

2.25 ct Round Tiger's Eye, 8.1 mm From Thailand

4.13 carat Yellow Citrine, Square loose Citrine from Brazil, Natural Untreated Gem, 9.1 x 9.1 mm

3.68 ct Yellow Quartz, 11.1 x 10.5 mm Carved From Brazil

28.06 ct Octagon / Emerald Cut Lapis Lazuli, 25.6 x 14.9 mm From Afghanistan

0.78 ct Loose Yellow Sapphire, 3.7 x 3.7 mm Princess Cut From Tanzania

52.14 ct Blue Sodalite, 44.4 x 26.8 mm Oval Cut From Australia

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

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

0.46 carat Pink Sapphire, Pear Shape loose Sapphire from Tanzania, Natural Gem, 6.6 x 4 mm

Gemstone Information

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