Calibrated 12 x 12 mm Square Shape Loose Natural Gemstones from Ge...

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 Square shapes, facet cut and cabochon gems available now in 12 mm x 12 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 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.

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Overall Rating -> 10

Everthing about researching and ordering from Gemselect was easy and uncomplicated. In the past I had payment problems, but your customer rep, Thomas, helped me get everything right. I will continue using Gemselet in the future for these reasons.

Posted By WildwillyfromArizona in August, 2023

Source: Bizrate

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

Wonderful selection of gems to choose from. Have made many purchases and was only slightly disappointed once.

Posted By Teemo in February, 2024

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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 The only "bad" thing that I have to say is that the interface of the site is outdated.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

Very good, very fast, everything as described.

Posted By B in October, 2023

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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

Hello: You do have good website. Vast majority of folks would buy the Gems for its spiritual, physical / energy level, emotional level positive aspects. You have only very brief mention of this aspect of each Gem ..may be you can add little bit more about ways to leverage the beneificial effect of each gems i.e. some practical tips.ThanksRupen Patel

Posted By EarthDeep in February, 2024

Source: Bizrate

Overall Rating -> 10

I was pleased with the selection of gems, the ease of navigating, and the smooth checkout

Posted By JamesMichael781 in September, 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

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

this was very easy im exited to get my order

Posted By Mr. in April, 2024

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

Overall Rating -> 10

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

Posted By Erin in June, 2023

Source: Bizrate

Overall Rating -> 10

Fantastic dealer for quality gemstones. Website is easy to navigate, selection is superb, delivery of purchases is prompt. Easy to select incorrect payment options, however.

Posted By David W in May, 2023

Source: Bizrate

Overall Rating -> 10

It was easy to search and find what i wanted

Posted By Gunner in November, 2023

Source: Bizrate

Gemstones A-Z

Buy Square Shape 12x12 mm Gems

26.19 ct Green Aventurine, 38.3 x 9.3 mm Pencil Cut From Brazil

9.59 ct Oval Cat's Eye Opal, 15.5 x 10.8 mm From Madagascar

27.79 carat Pear Tiger's Eye Matrix, loose Certified Tiger's Eye Matrix from Mexico, Natural Untreated Gem, 34.2 x 18.5 mm

4.63 carat Pear Shape Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 14 x 10.1 mm

13.25 ct Oval Pietersite, 14.1 x 10.2 mm From China

2.92 carat Sky Blue Topaz, Pear Shape loose Topaz from Brazil, Natural Gems, 6.9 x 4.8 mm

3.72 ct Loose Trillion Concave Cut Mystic Quartz, 8.1 x 8.1 mm From Brazil

1.39 carat Orange Opal, Pear Shape loose Opal from Ethiopia, Natural Gem, 11.8 x 7.3 mm

2.32 ct Loose Orange Moonstone, 8.1 x 8 mm Cushion Cut From India

4.09 carat White Zircon, Oval loose Zircon from Cambodia, Natural Gems, 7.1 x 5.1 mm

0.57 ct Marquise Cut Color-Change Diaspore, 9.4 x 4 mm From Turkey

1.18 carat Pink Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 9.8 x 4.3 mm

1.56 carat White Zircon, Diamond-Cut loose Zircon from Myanmar, Natural Gem, 6.4 mm

7.27 ct Black Spinel, 12.1 mm Round Rose Cut From Thailand

11.46 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gems, 14.1 x 9.9 mm

0.04 ct Blue Diamond, 2.1 mm Diamond Cut From India

4.68 ct Green Jade, 12.2 x 10.1 mm Oval Cut From Myanmar

1.74 carat Swiss Blue Topaz, Pear Shape loose Topaz from Brazil, Natural Gems, 7.3 x 5.2 mm

1.48 carat Orange Hessonite Garnet, Oval loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 7.4 x 6.2 mm

1.11 carat Green Apatite, Pear Shape loose Apatite from Madagascar, Natural Untreated Gem, 8.2 x 5.7 mm

65.51 ct Cushion Jasper, 36.4 x 30.8 mm From Indonesia

1.04 carat Round Ruby, loose Certified Ruby from Myanmar, Natural Gem, 5.5 mm

5.25 carat Sky Blue Topaz, Trillion loose Topaz from Brazil, Natural Gems, 7.2 x 7.1 mm

7.16 carat Yellow Citrine, Pear Shape loose Citrine from Brazil, Natural Untreated Gems, 12.1 x 10 mm

1.08 ct Marquise Cut Peridot, 8.1 x 4.1 mm From China

11.73 ct Blue Green Turquoise, 24.9 x 16.1 mm Oval Cut From China

6.9 ct Oval Malachite, 12.1 x 10 mm From Congo

7.34 ct Pink Morganite, 12.1 mm Round Cut From Afghanistan

2.49 carat Blue Tanzanite, Oval loose Tanzanite from Tanzania, Natural Gem, 9.1 x 7.2 mm

113.87 carat Pear Dendritic Agate, loose Certified Dendritic Agate from India, Natural Untreated Gem, 58.6 x 41.1 mm

9.7 ct Cushion Onyx, 11 x 10.9 mm From Sri Lanka

0.91 carat Diamond-Cut Tsavorite Garnet, loose Certified Tsavorite Garnet from Tanzania, Natural Untreated Gems, 3.8 mm

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