Marquise Shape 7 x 3.5 mm calibrated natural loose gems 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 marquise shaped facet cut gems, gemstone carvings and cabochons available in 7 mm x 3.50 mm sizes. For the largest selection of colored gemstones, Shop GemSelect Online.

As a general guideline, when it comes to calibrated gems, they are not usually expected to be cut to exact measurements and specifications. But rather, they're cut with slight variance in size, though the close approximatation in size is not clearly defined, there are general guidelines for what is considered acceptable. Obviously larger and heavy carat weight stones allow more room in size for variance, while smaller stones may leave little to none. This means a large 30mm calibrated gemstone, could actually be closer to 31 millimeters. For this reason, we recommend to always view the exact size in addition to the calibrated size details. The exact size will inform you of the variance you can expect. Some setting styles are more flexible with variance, such as prong settings, while other styles of mountings may need almost an exact size to the fraction of millimeter.

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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Overall Rating -> 10

Todo muy bien en la compra ahora esperar recibir el pedido.

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I have used Gem Select many times over the past 10 years and have always been happy with the product & services

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Very pleased with shopping on this site. It's easy to navigate and information about gemstones is very good.

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Gem Select has gems at afffordable prices.

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Easy to find the stones I was looking for. Always good quality stones

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Overall Rating -> 9

Gemselect is a good website with a great selection of loose gems for sale. The prices are fairly decent, with the only negative being the cut quality of the gems. This is my go to retailer for gemstones and will continue to be, given that the packages arrive in a timely manner.

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Gemstones A-Z

Buy Marquise Shape 7x3.5 mm Gems

6.73 carat White Zircon, Oval loose Zircon from Cambodia, Natural Gems, 6.1 x 4.1 mm

4.46 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gems, 9.9 x 7.9 mm

0.39 carat Blue Kyanite, Round loose Kyanite from Nepal, Natural Untreated Gem, 4.4 mm

18.89 ct Loose Round Checkerboard Amethyst, 18.2 mm From Brazil

2.54 ct Yellow Apatite, 9.9 x 7.7 mm Oval Cut From Madagascar

7.03 ct Round Larimar, 12.1 mm From the Dominican Republic

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

0.65 carat Pear Shape Pyrope Garnet, loose Certified Pyrope Garnet from the United States, Natural Untreated Gem, 6.7 x 4.8 mm

7.59 ct Fancy Coral, 15.6 x 13.5 mm From Indonesia

0.73 ct Oval Sillimanite Cat's Eye, 7.3 x 5.3 mm From Madagascar

1.43 ct Round Strawberry Quartz, 6.1 mm From Russia

14.48 carat Pear Checkerboard Labradorite, loose Certified Labradorite from Madagascar, Natural Untreated Gems, 18.3 x 13.3 mm

7.55 carat Cushion Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 18.1 x 9 mm

5.46 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gem, 14.1 x 10 mm

1.66 ct Blue Apatite, 5.1 x 3.9 mm Oval Cut From Madagascar

89.72 carat Multicolor Tourmaline, loose Tourmaline from Mozambique, Natural Untreated Gems, 31.7 x 21.8 mm

92.27 ct Drilled Sphere Rhodochrosite, 16.8 mm From South Africa

0.34 carat Oval Emerald, loose Certified Emerald from Colombia, Natural Gem, 5.1 x 3.5 mm

0.49 ct Blue Kyanite, 3.7 mm Round Cut From Nepal

43.58 ct Oval Rainbow Moonstone, 30.5 x 20.7 mm From the United States

2.39 ct Round Cut Andalusite, 4.1 mm From Brazil

5.4 carat Sky Blue Topaz, Trillion loose Topaz from Brazil, Natural Gems, 7 x 6.8 mm

28.87 ct Loose Pear Bloodstone, 39.8 x 20.3 mm From Madagascar

3.28 carat Sky Blue Topaz, Pear Shape loose Topaz from Brazil, Natural Gems, 7.1 x 5.1 mm

1.79 carat Orange Hessonite Garnet, Round loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 6.9 mm

29.48 ct Black Spinel, 20 x 10.2 mm Baguette Rose Cut From Thailand

8.49 carat White Zircon, Oval loose Zircon from Cambodia, Natural Gems, 6.2 x 4.2 mm

0.35 ct Loose Orange Sapphire, 5 x 2.6 mm Marquise Cut From Tanzania

1.23 carat Swiss Blue Topaz, Trillion-Cut loose Topaz from Brazil, Natural Gem, 6.9 x 6.7 mm

1.5 carat Orange Hessonite Garnet, Emerald Cut loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 6.9 x 5 mm

2.33 carat Yellow Citrine, Pear Shape loose Citrine from Brazil, Natural Untreated Gem, 13.6 x 6.9 mm

1.25 carat Oval Ruby, loose Certified Ruby from Madagascar, Natural Gem, 6.7 x 4.9 mm

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