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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Interested in unusual stones and found many that I purchased or will purchase in the near future. I have been a customer of gem select for almost ten years and have always been pleased with buying experience and the delivered product

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the searching format was easy to find what i needed. It helped to be able to sort Lowest price to Highest because i wasnt looking to spend too much but i did want an actual stone and not imitation.

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Very excited and impressed with all your products. Keep up the good work....more different stones to choose from. I like Cabachons.

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I have actually done business with them before and was quite satisfied with them then.My Mother collected turtle items and when I saw the Mother of Pearl turtle...I just thought of her and decided to buy it. It's even tinier than I thought, but so adorable!The gemstones I bought are for jewelry for my daughter's birthday.

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Gemstones A-Z

Buy Marquise Shape 7x3.5 mm Gems

5.74 ct Oval Star Moonstone, 11.2 x 9.1 mm From India

2.01 ct Loose Princess Cut Sapphire, 2.7 x 2.7 mm From Tanzania

3.54 carat Pear Shape Emerald, loose Certified Emerald from Zambia, Natural Gem, 13.5 x 9.1 mm

1.31 carat Yellow Citrine, Pear Shape loose Citrine from Brazil, Natural Untreated Gems, 7 x 5 mm

2.75 ct Blue Green Grandidierite, 10.7 x 7.5 mm Oval Cut From Madagascar

5.76 ct Carved Prehnite, 16.7 x 10.8 mm From South Africa

1.22 ct Blue Kyanite, 6.2 mm Round Cut From Nepal

2.16 ct Round Cut Strawberry Quartz, 6.9 mm From Russia

3.21 carat Yellow Citrine, Emerald Cut loose Citrine from Brazil, Natural Untreated Gems, 8.1 x 6.2 mm

1.07 carat Red Malaya Garnet, Marquise Cut loose Malaya Garnet from Tanzania, Natural Untreated Gem, 9.9 x 5 mm

3.03 ct Round Cut Strawberry Quartz, 9 mm From Russia

0.21 carat Orange Spessartite Garnet, Round loose Spessartite Garnet from Mozambique, Natural Untreated Gem, 3.4 mm

0.55 carat Green Sapphire, Cushion loose Sapphire from Tanzania, Natural Gem, 4.2 x 4.1 mm

4.94 ct Round Cut Smoky Quartz, 11.9 mm From Brazil

3.55 carat Pink Topaz, Round loose Topaz from Brazil, Natural Gem, 9.1 mm

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

2.26 ct Loose Princess Cut Sapphire, 2.5 x 2.4 mm From Tanzania

2.66 carat Sky Blue Topaz, Heart loose Topaz from Brazil, Natural Gem, 8.9 x 8.8 mm

28.35 ct White Scolecite, 25.1 x 23.7 mm Cushion Cut From South Africa

0.8 carat Green Tourmaline, Oval loose Tourmaline from Mozambique, Natural Untreated Gem, 6.3 x 4.7 mm

0.9 carat Oval Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gems, 6 x 4 mm

28.66 ct Loose Oval Bloodstone, 32.7 x 22.5 mm From Madagascar

0.99 carat Oval Emerald, loose Certified Emerald from Colombia, Natural Gem, 7.2 x 5.8 mm

0.75 ct Loose White Sapphire, 4.4 mm Diamond Cut From Madagascar

2.93 ct Oval Tiger's Eye, 8.2 x 6.2 mm From Thailand

4.03 ct Loose Orange Sapphire, 10.4 x 8.6 mm Oval Cut From Thailand

44.65 ct Brown Moonstone, 25.3 x 18.1 mm Oval Cut From India

5.97 ct Yellow Quartz, 11.8 x 11.6 mm Carved From Brazil

0.83 carat London Blue Topaz, Square loose Topaz from Brazil, Natural Gem, 5.1 x 4.9 mm

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

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

19.31 carat Swiss Blue Topaz, Oval loose Topaz from Brazil, Natural Gem, 19.5 x 14.2 mm

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