Calibrated Heart Shape Gemstones 12 x 12 mm size from GemSelect

Some people by gems by color or price, but for many, it may be better to buy gems by size - especially if you're in need to a gem to replace another previous item that was lost or damaged: Calibrated heart shaped facet cut gems and cabochon gems in 12 x 12 mm size. Buy a wide range of calibrated gemstones by size at wholesale from GemSelect.

As a general guideline, when it comes to 'calibrated' gems, they are not meant nor 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 around 0.3 mm or slightly higher even. This small variance can usually be accommodated for 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

Find More Content Here

Over 19 Years in the Gemstone Business!

Thank you for trusting us with your purchase!

Overall Rating -> 10

Very good customer service. I had an issue on my end with shipping and I received a response the next day!

Posted By Orphanboy in December, 2023

Source: Bizrate

Overall Rating -> 9

Well presented images, clear information, quick and easy check out.

Posted By Mr. Bezel in July, 2023

Source: Bizrate

Overall Rating -> 10

I purchase all of my stones from GemSelect! They're the best I've found for both selection and value.

Posted By Terry in June, 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 -> 10

Convenient selection, arrival on time

Posted By Alin in February, 2024

Source: Bizrate

Overall Rating -> 10

I love your selection of gems. My only complaing is I wish I could put in a page number to return to that page.When there are over 60 pages of gems it is hard to return to a page with a gem I am considering.

Posted By Cahall in March, 2024

Source: Bizrate

Overall Rating -> 10

The gem stone always has a great selection of beautiful stones. The calibrated stone fit my ring perfectly. Thank you gem select !

Posted By Jen in August, 2023

Source: Bizrate

Overall Rating -> 10

Great website and information

Posted By Moonshot in December, 2023

Source: Bizrate

Overall Rating -> 10

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

Posted By Will J. Lover in September, 2023

Source: Bizrate

Overall Rating -> 10

Great Job today! No issues!

Posted By Samlovesgems777 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

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

I have had and will always have a great time shopping at GemSelect. It's a great web site with great products and great service.

Posted By Apps in November, 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

Super easy to do business for great products.

Posted By BoBBy in January, 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.

932

Gemstones A-Z

Buy Heart Shape 12x12 mm Gems

5.96 carat Oval Prehnite, loose Certified Prehnite from South Africa, Natural Untreated Gem, 12.4 x 9.1 mm

0.25 ct Square Cut Kornerupine, 3.8 x 3.8 mm From Sri Lanka

2.27 carat Orange Hessonite Garnet, Oval loose Hessonite Garnet from Sri Lanka, Natural Untreated Gem, 9 x 7.4 mm

0.56 carat London Blue Topaz, Oval loose Topaz from Brazil, Natural Gem, 6.1 x 4.2 mm

1.45 carat Green Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 17.2 x 3.4 mm

7.08 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gem, 13.8 x 10.5 mm

1.28 carat Pink Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 7.3 x 5.7 mm

2.08 ct Loose Orange Moonstone, 9.2 x 7.1 mm Cushion Cut From India

0.43 carat Oval Emerald, loose Certified Emerald from Colombia, Natural Gem, 6.2 x 3.9 mm

3.33 carat Pear Shape Tsavorite Garnet, loose Certified Tsavorite Garnet from Tanzania, Natural Untreated Gems, 5 x 3 mm

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

10.95 ct Oval Tiger's Eye, 18.4 x 13.4 mm From India

1.21 ct Oval Chrysoberyl Cat's Eye, 5.8 x 5.3 mm From Sri Lanka

3.26 carat Sky Blue Topaz, Pear Shape loose Topaz from Brazil, Natural Gems, 6.1 x 4.2 mm

5.96 carat Carved Round Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 12.3 mm

4.43 carat Yellow Citrine, Emerald Cut loose Citrine from Brazil, Natural Untreated Gem, 11 x 9.1 mm

8.15 carat White Zircon, Oval loose Zircon from Cambodia, Natural Gems, 6 x 4.1 mm

3.25 carat Trillion Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 6.1 x 6.1 mm

2.69 ct Oval Tiger's Eye, 7.8 x 5.9 mm From Thailand

4.86 ct Round Smoky Quartz, 12.1 mm From Brazil

0.47 carat Yellow Sapphire, Heart loose from Tanzania, Natural Gem, 4.6 x 4.4 mm

22.03 carat Black Tourmaline, Oval loose Tourmaline from Tanzania, Natural Untreated Gem, 19.2 x 15 mm

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

32.75 ct Baguette Jasper, 25.6 x 21.4 mm From Indonesia

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

11.44 ct Round Labradorite, 11.2 mm From Madagascar

4.45 carat Oval Opal, loose Certified Opal from Australia, Natural Untreated Gem, 14.4 x 11.1 mm

0.59 ct Round Labradorite, 5 mm From Madagascar

0.89 ct Oval Cut Peridot, 7.1 x 5.1 mm From China

19.08 ct Cushion Chalcedony, 20 x 19.1 mm From Brazil

9.16 carat Oval Ruby, loose Certified Ruby from Madagascar, Natural Gem, 13.2 x 11.1 mm

0.77 ct Loose Pink Sapphire, 6.2 x 6 mm Odd Shaped From Madagascar

Gemstone Information

Gemstone SHOP

POLICIES

WHO ARE WE?

Gemstone EDUCATION

WE ARE LOCATED AT