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 -> 8

Very easy to find the specific stone I was looking for. I am pleased by both the selection and the price of the stones that are available. The only "bad" thing that I have to say is that the interface of the site is outdated.

Posted By Nick in March, 2024

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

The website was very easy to navigate. We appreciated the details about each gem, and the sort and search features of the website were helpful and easy to use.

Posted By AV in May, 2023

Source: Bizrate

Overall Rating -> 10

Gem Select has gems at afffordable prices.

Posted By George in March, 2024

Source: Bizrate

Overall Rating -> 10

I find the website user friendly.

Posted By Becky in August, 2023

Source: Bizrate

Overall Rating -> 10

The website is easy to navigate and the images are incredible.

Posted By Lindsy in October, 2023

Source: Bizrate

Overall Rating -> 10

Great selection of various gems, easy to navigate site

Posted By Josh in August, 2023

Source: Bizrate

Overall Rating -> 10

Always have good experience

Posted By Ginnie in September, 2023

Source: Bizrate

Overall Rating -> 10

Overall, the whole process was just great.

Posted By Thatoneguy in August, 2023

Source: Bizrate

Overall Rating -> 10

Pleasant.

Posted By Mk in November, 2023

Source: Bizrate

Overall Rating -> 10

Was easy to search for many gems and mineral stones.Authenticity of natural stones is important, and I feel this site offers some assurance on this.

Posted By DanM in November, 2023

Source: Bizrate

Overall Rating -> 10

Selection and purchasing online was very easy

Posted By Aggy in January, 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

Always an easy experience using Gem select.

Posted By Jeff in November, 2023

Source: Bizrate

Overall Rating -> 10

The website is user friendly, has excellent selection. I've always found what I was looking for with Gem Select. When others don't have it they do. And most important, they have a way for you to pay without using PayPal. I cannot use PayPal they closed my account because of no cell phone.

Posted By NJD in September, 2023

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

5.75 carat Round Opal, loose Certified Opal from Ethiopia, Natural Untreated Gems, 8.2 mm

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

0.52 carat London Blue Topaz, Oval loose Topaz from Brazil, Natural Gem, 5.9 x 3.9 mm

5.52 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gem, 14 x 10 mm

32.46 carat Pear Jasper, loose Certified Jasper from Indonesia, Natural Untreated Gem, 28.4 x 19.1 mm

2.8 ct White Moonstone, 9 mm Round Cut From India

2.28 ct Blue Kyanite, 7.1 x 5.1 mm Oval Cut From Nepal

0.88 ct Black Diamond, 5.6 mm Diamond Cut From India

5.04 carat Pear Shape Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 14.9 x 10 mm

0.54 carat Teal Sapphire, Cushion loose Sapphire from Madagascar, Natural Gem, 4.2 x 4.1 mm

1.53 carat Heart Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 5.9 x 5.9 mm

1.24 carat Blue Tanzanite, Round loose Tanzanite from Tanzania, Natural Gems, 5 mm

1.36 ct Loose Princess Cut Sapphire, 2.3 x 2.3 mm From Tanzania

9.31 ct Diamond Cut Smoky Quartz, 13.9 mm From Brazil

1.68 carat White Zircon, Diamond-Cut loose Zircon from Cambodia, Natural Gem, 7 mm

26.33 ct Oval Jasper, 20 x 15.2 mm From Indonesia

2.74 ct Black Star Sapphire, 8.2 x 6.8 mm Oval Cut From Thailand

2.08 carat Blue Green Fluorite, Pear Shape loose Fluorite from India, Natural Untreated Gem, 9.8 x 6.6 mm

13.83 carat Green Opal, Oval loose Opal from Brazil, Natural Untreated Gem, 18 x 13.8 mm

3.97 carat White Topaz, Square loose Topaz from Brazil, Natural Untreated Gems, 4 x 4 mm

0.86 carat Green Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 12.5 x 3 mm

1.03 ct Loose Yellow Sapphire, 6.4 x 5 mm Oval Cut From Tanzania

8.67 ct Heart Onyx, 10.2 x 10.1 mm From Sri Lanka

1.79 ct Orange Moonstone, 7 x 7 mm Square Cut From India

0.72 ct Octagon Cut Color-Change Diaspore, 6.6 x 4.3 mm From Turkey

4.95 ct Blue Star Sapphire, 7 x 5.2 mm Oval Cut From Thailand

0.76 carat Blue Sapphire, Marquise-Cut loose Sapphire from Madagascar, Natural Gem, 7.8 x 4 mm

1.86 carat Marquise Cut Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 11.6 x 5.9 mm

0.51 carat Orange Spessartite Garnet, Round loose Spessartite Garnet from Mozambique, Natural Untreated Gem, 4.8 mm

3.72 carat Pear Shape Mystic Quartz, loose Certified Mystic Quartz from Brazil, Natural Gems, 10.2 x 7.1 mm

0.42 ct Loose Yellow Sapphire, 5.2 x 3 mm Baguette Cut From Tanzania

2.03 carat Green Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 22 x 3.4 mm

Gemstone Information

Gemstone SHOP

POLICIES

WHO ARE WE?

Gemstone EDUCATION

WE ARE LOCATED AT