Calibrated 7 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 7 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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Gemstones A-Z

Buy Round Shape 7 mm Gems

1.52 carat Heart Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 6 x 6.1 mm

2.4 carat Yellow Citrine, Pear Shape loose Citrine from Brazil, Natural Untreated Gem, 9.5 x 9.3 mm

0.53 carat Yellow Sapphire, Pear Shape loose Sapphire from Tanzania, Natural Gem, 6.1 x 4 mm

0.79 carat Blue Zircon, Diamond-Cut loose Zircon from Cambodia, Natural Gems, 4.1 mm

0.48 ct Loose Pink Sapphire, 5.7 x 4 mm Oval Cut From Madagascar

14.83 ct Yellow Quartz, 14.1 x 10 mm Carved From Brazil

1.49 ct Oval Prehnite, 8.6 x 6.6 mm From South Africa

4.51 carat White Topaz, Square loose Topaz from Brazil, Natural Untreated Gems, 4.1 x 4 mm

8.32 carat Sky Blue Topaz, Marquise Cut loose Topaz from Brazil, Natural Gems, 13.9 x 8.2 mm

0.8 carat Round Ruby, loose Certified Ruby from Myanmar, Natural Gem, 5.3 mm

44.34 ct Pencil Cut Strawberry Quartz, 37.3 x 12.4 mm From Russia

22.28 carat Ammolite, loose Certified Ammolite from Canada, Natural Gem, 28.9 x 16.9 mm

2.34 ct Pink Morganite, 13.9 x 6.9 mm Marquise Cut From Afghanistan

1.26 ct Loose Yellow Sapphire, 6.3 x 4.3 mm Oval Cut From Madagascar

2.06 carat Yellow Tourmaline, Cushion loose Tourmaline from Mozambique, Natural Untreated Gem, 10.5 x 7.4 mm

1.91 ct Yellow Apatite, 7.5 x 7.3 mm Asscher Cut From Madagascar

10.4 ct Oval Tiger's Eye, 16.2 x 12 mm From Thailand

6.82 ct Black Spinel, 9.1 mm Round Rose Cut From Thailand

3.06 carat Blue Green Fluorite, Oval loose Fluorite from India, Natural Untreated Gem, 9.1 x 7.2 mm

5.47 carat Trillion Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gems, 10.2 x 9.8 mm

1.45 ct Purple Spinel, 7.1 x 6.6 mm Cushion Cut From Tanzania

1.37 carat Orange Hessonite Garnet, Square loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 6.1 x 6 mm

1.09 ct Baguette Cut Kornerupine, 5.4 x 4.8 mm From Sri Lanka

4.69 carat White Zircon, Oval loose Zircon from Cambodia, Natural Gems, 6 x 4.1 mm

2.79 ct Oval Cut Golden Beryl, 9.2 x 6.9 mm From Madagascar

6.49 carat Bi-color Ametrine, Oval loose Ametrine from Brazil, Natural Untreated Gem, 14.5 x 10.6 mm

18.84 carat Black Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 16.5 x 14.2 mm

2.91 carat Sky Blue Topaz, Trillion loose Topaz from Brazil, Natural Gems, 7.2 x 7.2 mm

2.87 carat Sky Blue Topaz, loose Topaz from Brazil, Natural Gems, 10 x 5 mm

2.85 carat Sky Blue Topaz, loose Topaz from Brazil, Natural Gems, 9.9 x 5 mm

1.64 carat Yellow Citrine, Pear Shape loose Citrine from Brazil, Natural Untreated Gem, 10.3 x 7 mm

9.5 ct Oval Star Ruby, 13.4 x 11.3 mm From Madagascar

Gemstone Information

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