Marquise Shape 6 x 3 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 6 mm x 3 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

I find the website user friendly.

Posted By Becky in August, 2023

Source: Bizrate

Overall Rating -> 9

I am of the opinion that the company gem select cares about the product beautiful gems it sells and the cost of the gem I purchased was small i was treated as if it cost a lot of money and product was described in detail and i felt good about the little stones i had ordered.

Posted By Sparkle in March, 2024

Source: Bizrate

Overall Rating -> 9

over the experience was similar to other sites i have used. The only real note I have is the checkout experience was tedious and discriminatory, i wouldn't accept visa gift cards, which not only have guaranteed funds but help protect from misuse of personal information, but would not accept my visa b/c it is a prepaid card. I don't have bank account and I have been using the prepaid card for years without issue so this was disappointing to me. I feel safer using reputable gem sites rather than amazon or ebay (I have been sold fake gems with fake certs on both), but not being able to use my own valid legitimate funds and having to find a friend to buy for me b/c I use a non-bank card like 40% of the country is insulting.

Posted By Iggywiggly in January, 2024

Source: Bizrate

Overall Rating -> 10

Gem Select has gems at afffordable prices.

Posted By George in March, 2024

Source: Bizrate

Overall Rating -> 10

The website is very easy to use. The search function, filter and sort functions are very helpful.

Posted By Sboro in August, 2023

Source: Bizrate

Overall Rating -> 10

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.

Posted By Ktreva52 in February, 2024

Source: Bizrate

Overall Rating -> 10

Website was incredibly easy and fast to use. Navigation and product outlay was simple and enjoyable to browse. Thank you and have a blessed day!

Posted By Devi in October, 2023

Source: Bizrate

Overall Rating -> 10

Perfect size I was looking for and great price

Posted By Izzy in September, 2023

Source: Bizrate

Overall Rating -> 10

Extremely easy to use, and I am fully satisfied with the purchase process.

Posted By Fl_Beachcomber in October, 2023

Source: Bizrate

Overall Rating -> 10

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

Posted By Erin in June, 2023

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Overall Rating -> 10

Trustworthy site. I've had several good experiences with company. Products always have met my expectations. Thank you.

Posted By Ray in February, 2024

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Overall Rating -> 10

I loved the opportunity to shop on a website that I could trust 👍

Posted By Will J. Lover in September, 2023

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Overall Rating -> 10

I found it to be easy to browse and easy to use

Posted By Kyle in December, 2023

Source: Bizrate

Overall Rating -> 10

My only complaint is that there are so many beautiful and affordable stones that I get distracted from what I planned to order.

Posted By Phoenix in March, 2024

Source: Bizrate

Overall Rating -> 9

So many gorgeous stones! The only "complaint" I have is it's difficult to visualize sizes in mm. Perhaps some way to compare in inches?It has been a long time since I bought stones from Gem select, but the process wasn't too difficult.

Posted By Ktreva52 in February, 2024

Source: Bizrate

Gemstones A-Z

Buy Marquise Shape 6x3 mm Gems

3.97 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gem, 11.3 x 9.1 mm

0.36 carat Pear Shape Emerald, loose Certified Emerald from Colombia, Natural Gem, 5.8 x 3.8 mm

0.73 ct Loose Pink Sapphire, 6.2 x 5.1 mm Oval Cut From Madagascar

6.46 carat White Topaz, Oval loose Topaz from Brazil, Natural Untreated Gems, 10.2 x 8.2 mm

0.91 ct Loose Yellow Sapphire, 2.7 x 2.7 mm Princess Cut From Tanzania

0.57 carat Oval Emerald, loose Certified Emerald from Colombia, Natural Gem, 5.9 x 4.2 mm

3.51 ct Orange Sunstone, 9.9 mm Round Cut From India

0.49 ct Loose Orange Sapphire, 5.2 x 2.6 mm Marquise Cut From Tanzania

0.62 carat Blue Sapphire, Diamond-Cut loose Sapphire from Madagascar, Natural Gem, 5 mm

1.74 ct Loose Orange Sapphire, 4.8 x 2.6 mm Marquise Cut From Tanzania

0.5 ct Loose Violet Sapphire, 5.8 x 4.1 mm Oval Cut From Tanzania

11.47 ct Oval Serpentine, 21.5 x 13.7 mm From the United States

0.59 ct Orange Sphalerite, 5.4 x 4 mm Oval Cut From Spain

7.47 carat Yellow Citrine, Square loose Citrine from Brazil, Natural Untreated Gems, 6.1 x 6.1 mm

0.72 ct Loose Yellow Sapphire, 4.7 x 4.6 mm Cushion Cut From Tanzania

0.59 ct Oval Cut Peridot, 6.5 x 4.5 mm From China

1.64 carat Oval Peridot, loose Certified Peridot from China, Natural Untreated Gems, 7.1 x 5.1 mm

1.51 carat Oval Opal, loose Certified Opal from Ethiopia, Natural Gem, 9.9 x 7.8 mm

0.63 ct Loose Yellow Sapphire, 4.9 x 2.9 mm Baguette Cut From Tanzania

23.23 carat Swiss Blue Topaz, Pear Shape loose Topaz from Brazil, Natural Gem, 18.6 x 14.8 mm

1.14 carat Yellow Citrine, Trillion loose Citrine from Brazil, Natural Untreated Gems, 6.1 x 6 mm

3.19 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gem, 11.3 x 9.1 mm

2.9 ct Blue Kyanite, 8.1 mm Round Cut From Nepal

0.84 carat Violet Sapphire, Pear Shape loose Sapphire from Madagascar, Natural Gem, 6.1 x 5 mm

15.17 carat Swiss Blue Topaz, Carved Leaf loose Topaz from Brazil, Natural Gem, 18.3 x 13.8 mm

6.01 ct Orange Sunstone, 11.9 mm Round Cut From India

4.19 ct Round Cut Peridot, 5.6 mm From China

5.53 ct Round Concave Cut Rose Quartz, 12 mm From Brazil

0.36 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gem, 6.1 x 4.1 mm

15.55 ct Oval Jasper, 20.1 x 15.2 mm From Indonesia

7.4 ct Round Cut Smoky Quartz, 12.8 mm From Brazil

7.06 carat Swiss Blue Topaz, Emerald-Cut loose Topaz from Brazil, Natural Gems, 8 x 6.1 mm

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