Marquise Shape 10 x 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 10 mm x 5 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.

Read All

Gemstone Information

Over 19 Years in the Gemstone Business!

Thank you for trusting us with your purchase!

Overall Rating -> 10

I have used gm select a while ago and was always pleased with the products

Posted By Jaytee in November, 2023

Source: Bizrate

Overall Rating -> 10

Love the variety of stones, sizes and the prices

Posted By Dorita in March, 2024

Source: Bizrate

Overall Rating -> 10

I really enjoy browsing through GemSelect. The selection is always marvelous and I love how detailed everything is described. The only thing I noticed is that when browsing through my phone, the videos of the gems do not load. If there were more videos of the gems, that would be amazing, though I understand that is a lot of work on GemSelect's part! Checking out is also very fast and easy, and I love that the return policy is very good, though I hope I don't have to use it anytime soon.

Posted By ChiChi in January, 2024

Source: Bizrate

Overall Rating -> 10

My first order. I am anxious to see if what I ordered is what I receive.

Posted By KRJ in July, 2023

Source: Bizrate

Overall Rating -> 10

The site is very easy to use and I will continue to shop here. The quality is superb

Posted By Genia in January, 2024

Source: Bizrate

Overall Rating -> 10

Great site

Posted By Lord of Bananas in November, 2023

Source: Bizrate

Overall Rating -> 10

Easy to find products I want. I've ordered several times from gem select and never any problems. Will order again. Thank you.

Posted By Ray in January, 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

I was looking for ammolite for my husband. Other websites are not always clear about whether they have genuine ammolite or simulated ammolite. I have purchased from GemSelect before and trust that the stones are genuine. Finding the stones I want is easy, and I love all of the search filter options!

Posted By Ana in September, 2023

Source: Bizrate

Overall Rating -> 10

Selection and purchasing online was very easy

Posted By Aggy in January, 2024

Source: Bizrate

Overall Rating -> 9

Never bought anything on this website before, but it probably won't be my last purchase. Definitely one of the easiest to use and most informative sites I've ever been to.

Posted By Bob in November, 2023

Source: Bizrate

Overall Rating -> 10

Super easy to do business for great products.

Posted By BoBBy in January, 2024

Source: Bizrate

Overall Rating -> 10

GemSelect has the Best gems. Clear photos and detailed description helps me make the best choice. I have Never been disappointed by thier quality items.

Posted By Rock Hound in July, 2023

Source: Bizrate

Overall Rating -> 10

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

Posted By Fairhope Pete in December, 2023

Source: Bizrate

Overall Rating -> 10

i love this site, the gems are always of good quality, i've been buy gifts from the site for 10 years, love it

Posted By Jf in January, 2024

Source: Bizrate

Gemstones A-Z

Buy Marquise Shape 10x5 mm Gems

3.01 ct Blue Kyanite, 10 x 7.6 mm Oval Cut From Nepal

1.05 carat Oval Opal, loose Certified Opal from Australia, Natural Untreated Gem, 9.3 x 7.3 mm

0.48 ct Loose Purple Sapphire, 4.8 x 3.8 mm Oval Cabochon From Tanzania

0.73 carat Oval Peridot, loose Certified Peridot from China, Natural Untreated Gem, 7 x 4.9 mm

0.33 ct Yellow Sphalerite, 4 mm Round Cut From Spain

17.61 ct Fancy Boulder Opal, 22.8 x 17.7 mm From Australia

11.01 carat Ammolite, loose Certified Ammolite from Canada, Natural Gem, 24.8 x 8.4 mm

2.8 carat Round Tsavorite Garnet, loose Certified Tsavorite Garnet from Tanzania, Natural Untreated Gems, 2.4 mm

12.88 ct Pink Mystic Topaz, 10 x 10 mm Princess Cut From Brazil

3.73 ct Orange Sunstone, 11.1 x 9 mm Oval Cut From India

1.15 carat Orange Hessonite Garnet, Cushion loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 7 x 5 mm

13.47 ct Odd Shaped Druzy Variscite, 23.7 x 14.2 mm From China

1.65 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gem, 9.1 x 7.1 mm

4.3 ct Green Agate, 18.9 x 9.8 mm Carved From India

1.06 carat London Blue Topaz, Oval loose Topaz from Brazil, Natural Gems, 6 x 4 mm

1.36 ct Yellow Sphene, 7.1 x 5.7 mm Oval Cut From Sri Lanka

1.5 carat Oval Opal, loose Certified Opal from Australia, Natural Untreated Gem, 10.4 x 7.4 mm

7.96 ct Loose Oval Agate, 12.3 x 11.2 mm From Indonesia

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

4.75 carat Diamond-Cut Tsavorite Garnet, loose Certified Tsavorite Garnet from Kenya, Natural Untreated Gems, 2.2 mm

1.26 carat Oval Opal, loose Certified Opal from Australia, Natural Untreated Gem, 11.2 x 7.4 mm

2.54 carat Blue Sapphire, Princess-Cut loose Sapphire from Madagascar, Natural Gems, 2.6 x 2.5 mm

2.8 ct Loose Yellow Sapphire, 4.9 mm Round Cut From Tanzania

1.42 ct Green Sphene, 6.9 x 6.1 mm Oval Cut From Sri Lanka

33.83 ct Oval Jasper, 32.7 x 13.9 mm From Indonesia

2.79 ct Yellow Quartz, 9.5 x 9.3 mm Carved From Brazil

0.7 carat Pear Shape Mystic Quartz, loose Certified Mystic Quartz from Brazil, Natural Gems, 6.1 x 4 mm

0.62 carat Blue Sapphire, Marquise-Cut loose Sapphire from Madagascar, Natural Gem, 8 x 4 mm

26.57 ct Oval Rainbow Moonstone, 23.8 x 17.8 mm From the United States

1.22 carat Pear Shape Ruby, loose Certified Ruby from Myanmar, Natural Gems, 7 x 5 mm

18.75 ct Carved Ruby-Zoisite, 16.4 x 15.5 mm From Tanzania

12.98 ct Asscher Cut Rose Quartz, 12.1 x 12.1 mm From South Africa

Gemstone Information

Gemstone SHOP

POLICIES

WHO ARE WE?

Gemstone EDUCATION

WE ARE LOCATED AT