Calibrated 12 x 10 mm Oval Shape Natural Loose Gemstones: 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 oval shapes, facet cut and cabochon gems available now in 12 x 10 mm 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 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 -> 9

making my own jewelry for my birth stone

Posted By LoveGeo in July, 2023

Source: Bizrate

Overall Rating -> 10

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

Posted By Kate in December, 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

Excellent site.

Posted By Boru in December, 2023

Source: Bizrate

Overall Rating -> 10

Found the stone I wanted which was delivered quickly and met expectations.

Posted By GemGrammy in January, 2024

Source: Bizrate

Overall Rating -> 10

Found what I was looking for

Posted By Rian in June, 2023

Source: Bizrate

Overall Rating -> 7

I placed order#384714 based on the picture on your website and the stone came in much darker. I'm sure it's the same stone i ordered but your lighting made it seem a lighter blue. I was trying to match a stone for a customer and based on the picture it would have been close enough but the stone in person is a mile off.

Posted By Bobk in February, 2024

Source: Bizrate

Overall Rating -> 10

I have used GemSelect for several years and plan to shop more in the further. This is a good source of information on gemstones. I love looking at and learning about them. Lot more than I ever knew existed.

Posted By Bikerwalrus in October, 2023

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

Great website and information

Posted By Moonshot 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

Overall Rating -> 9

It went well

Posted By Rob in December, 2023

Source: Bizrate

Overall Rating -> 10

I find the website user friendly.

Posted By Becky in August, 2023

Source: Bizrate

Overall Rating -> 10

I had a great time searching all the lovely stones. This is my first precious loose stone purchase for my own work. I chose sapphire, and found some lovely briolettes. I wanted 3, but this set of 4 was perfect. Everything was quick and easy, and I'm excited.

Posted By Phoenix in February, 2024

Source: Bizrate

Overall Rating -> 9

Easy to use. Limited supply of higher quality gemstones.

Posted By Newfguy in February, 2024

Source: Bizrate

Gemstone SHOP

POLICIES

WHO ARE WE?

Gemstone EDUCATION

WE ARE LOCATED AT

183/24-25 Moo 4, Trirat Rd.
T. Chantanimit, A. Muang
Chanthaburi 22000
THAILAND
Phone: 1-800-464-1640
Phone: +66-39601289

STAY IN TOUCH | NEWSLETTER

*You're signing up to receive GemSelect promotional email.

Switch to Mobile Version

Reproduction (text or graphics) without the express written consent of GemSelect.com (SETT Company Ltd.) is strictly prohibited.

231

Gemstones A-Z

Buy Oval Shape 12x10 mm Gems

0.88 carat Square Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 4.2 x 4.1 mm

3.59 carat Black Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 14.7 x 5.8 mm

23.93 ct Cushion Howlite, 27.9 x 18.3 mm From the United States

0.48 ct Loose White Sapphire, 4.5 mm Diamond Cut From Madagascar

1.12 carat Oval Emerald, loose Certified Emerald from Colombia, Natural Gem, 7.4 x 6 mm

31.03 ct Loose Oval Bloodstone, 24.6 x 19 mm From Madagascar

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

1 carat Green Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 8.4 x 4 mm

4.35 ct Loose Oval Agate, 11.2 x 9.6 mm From Indonesia

0.7 ct Loose Purple Sapphire, 5.9 x 4 mm Oval Cut From Tanzania

1 carat Yellow Citrine, Heart loose Citrine from Brazil, Natural Untreated Gem, 7 x 6.9 mm

2.86 carat Square Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 5 x 4.9 mm

4.61 ct Yellow Quartz, 13.5 x 13.4 mm Carved From Brazil

3.37 carat Sky Blue Topaz, Pear Shape loose Topaz from Brazil, Natural Gems, 5.9 x 4.1 mm

1.52 ct Blue Apatite, 5 x 4.1 mm Oval Cut From Madagascar

4.09 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gem, 12.7 x 8.9 mm

1.74 carat Orange Hessonite Garnet, Cushion loose Hessonite Garnet from Sri Lanka, Natural Untreated Gem, 7.7 x 7.3 mm

0.59 ct Orange Sphalerite, 5.2 x 4.2 mm Oval Cut From Spain

0.79 carat Pink Morganite, Pear Shape loose Morganite from Afghanistan, Natural Untreated Gem, 8.1 x 5 mm

6.6 ct Trillion Pietersite, 15.4 x 14 mm From Namibia

0.41 ct Loose Yellow Sapphire, 4.3 x 4.2 mm Heart Cut From Tanzania

1.41 ct Loose Trillion Cut Mystic Quartz, 6.1 x 6.1 mm From Brazil

1.73 carat Heart Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 6 x 6.1 mm

15.06 carat Pear Jasper, loose Certified Jasper from Indonesia, Natural Untreated Gem, 29.1 x 13.5 mm

1.94 carat Orange Hessonite Garnet, Oval loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 8.3 x 6.8 mm

3.92 carat Sky Blue Topaz, Pear Shape loose Topaz from Brazil, Natural Gems, 7 x 5 mm

1.33 carat Oval Ruby, loose Certified Ruby from Madagascar, Natural Gem, 7.2 x 5.2 mm

0.62 ct Loose Yellow Sapphire, 6.2 x 4.1 mm Oval Cut From Tanzania

2.07 carat Yellow Citrine, Pear Shape loose Citrine from Brazil, Natural Untreated Gem, 10.5 x 7.9 mm

0.72 carat Blue Sapphire, Marquise-Cut loose Sapphire from Madagascar, Natural Gem, 7.9 x 4.1 mm

7.19 ct Black Spinel, 9.1 mm Round Rose Cut From Thailand

12.46 ct Carved Prehnite, 17.6 x 11.4 mm From South Africa

Gemstone Information

Gemstone SHOP

POLICIES

WHO ARE WE?

Gemstone EDUCATION

WE ARE LOCATED AT