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

2.13 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gems, 8 x 6 mm

52.9 carat Bi-color Ametrine, Oval Portuguese-Cut loose Ametrine from Brazil, Natural Untreated Gem, 26.3 x 20.7 mm

0.58 ct Loose Orange Sapphire, 5.7 x 3.9 mm Oval Cut From Madagascar

1.95 carat Heart Checkerboard Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 8 x 8 mm

12.25 ct Gray Jadeite, 17.7 x 14.1 mm Oval Cut From Myanmar

48.88 ct Round Hematite, 18.1 mm From Brazil

1.29 carat Oval Opal, loose Certified Opal from Ethiopia, Natural Gem, 9 x 6.6 mm

2.87 carat Trillion Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 10.1 x 10 mm

5.97 carat Pear Shape Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 15.9 x 11.8 mm

1.41 ct Oval Cut Strawberry Quartz, 8.2 x 6 mm From Russia

0.56 ct Loose Purple Sapphire, 7.4 x 5.2 mm Odd Shaped From Tanzania

0.85 carat Orange Hessonite Garnet, Cushion loose Hessonite Garnet from Sri Lanka, Natural Untreated Gem, 5 x 5 mm

1.24 carat Oval Demantoid Garnet, loose Certified Demantoid Garnet from Namibia, Natural Untreated Gems, 4.5 x 3.6 mm

22.78 carat Ammolite, loose Certified Ammolite from Canada, Natural Gem, 26.5 x 17.4 mm

1.67 carat White Zircon, Oval loose Zircon from Cambodia, Natural Gems, 6.3 x 4.3 mm

10.07 ct Carved Prehnite, 19.4 x 12.9 mm From South Africa

4.35 ct Pink Morganite, 15.3 x 9.2 mm Carved From Afghanistan

5.59 carat Yellow Citrine, Round loose Citrine from Brazil, Natural Untreated Gem, 11.8 mm

11.13 carat Swiss Blue Topaz, Carved Fruit loose Topaz from Brazil, Natural Gem, 17 x 10.3 mm

2.39 ct Oval Checkerboard Rainbow Moonstone, 6.9 x 5.9 mm From India

0.2 carat Square Emerald, loose Certified Emerald from Colombia, Natural Gem, 3.3 x 3.1 mm

0.43 carat Pink Sapphire, Pear Shape loose Sapphire from Tanzania, Natural Gem, 5.9 x 4.7 mm

14.21 ct Fancy Rhodochrosite, 19.3 x 13.3 mm From South Africa

18.1 carat Pear Jasper, loose Certified Jasper from Indonesia, Natural Untreated Gem, 33 x 17.2 mm

6.77 carat Yellow Citrine, Emerald Cut loose Citrine from Brazil, Natural Untreated Gems, 10.9 x 8.9 mm

2.55 ct Loose Orange Moonstone, 8.8 x 6.8 mm Cushion Cut From India

1.97 ct Cushion Checkerboard Smoky Quartz, 9.1 x 7 mm From Brazil

3.63 ct Oval Carnelian, 10.2 x 8 mm From India

1.57 carat Yellow Zircon, Oval loose Zircon from Cambodia, Natural Untreated Gem, 7.8 x 5.5 mm

0.88 ct Loose Oval Pietersite, 7.5 x 5.2 mm From Namibia

45.67 ct Oval Snowflake Obsidian, 33.1 x 24.5 mm From India

0.2 ct Brown Diamond, 3.7 mm Diamond Cut From India

Gemstone Information

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