Calibrated 30 x 22 mm Octagon Shape Natural 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 Octagon shape / Emerald-Cut, faceted and cabochon gems available now in 30 x 22 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.

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it was good

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Easy and fast

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Great selection of various gems, easy to navigate site

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Perfect size I was looking for and great price

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love yall

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Had a problem ordering first time. Someone from Gem Select reached out to me and cleared problem and I made purchase.

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

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Everything was fine.

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

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Love gemselect

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Everything was good but since I am still new I was surprised at how small the stones where.

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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

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Easy to navigate

Posted By G Funk in December, 2023

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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

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Overall Rating -> 10

The website is very easy to use. The search function, filter and sort functions are very helpful.

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Gemstones A-Z

Buy Octagon Shape 30x22 mm Gems

2.33 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gem, 9.8 x 7.8 mm

5.92 ct Oval Actinolite Cat's Eye, 14.1 x 10.2 mm From the United States

15.77 carat Ammolite, loose Certified Ammolite from Canada, Natural Gem, 27.9 x 13.1 mm

2.5 carat Heart Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gems, 5.9 x 5.8 mm

1.74 carat Bi-color Tourmaline, Carved Flower loose Tourmaline from Mozambique, Natural Untreated Gem, 7.1 x 6.3 mm

3.94 carat Oval Strawberry Quartz, loose Certified from India, Natural Untreated Gem, 11.7 x 9.7 mm

5.84 ct Round Cut Strawberry Quartz, 9.1 mm From Russia

8.51 carat Trillion-Cut Tsavorite Garnet, loose Certified Tsavorite Garnet from Tanzania, Natural Untreated Gem, 13.2 x 13.1 mm

0.23 ct Black Diamond, 3.6 mm Diamond Cut From India

0.97 ct Green Sphene, 6 x 5.4 mm Oval Cut From Sri Lanka

1.92 carat White Zircon, Diamond-Cut loose Zircon from Colombia, Natural Gem, 7 mm

6.74 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gem, 15.7 x 10.5 mm

8.85 ct Asscher Cut Smoky Quartz, 11.8 x 11.4 mm From Brazil

4.83 ct Fancy Fire Agate, 11.4 x 10.5 mm From Mexico

0.69 carat Pink Sapphire, Pear Shape loose Sapphire from Madagascar, Natural Gem, 6.1 x 4.9 mm

9.59 ct Yellow Quartz, 16 x 12.1 mm Flower Cut From Brazil

1.28 carat Orange Zircon, Emerald Cut loose Zircon from Tanzania, Natural Untreated Gem, 7 x 4.7 mm

0.61 ct Red Spinel, 4.8 x 4 mm Cushion Cut From Tanzania

0.57 carat Emerald Cut Emerald, loose Certified Emerald from Colombia, Natural Gem, 5.9 x 3.9 mm

3.36 ct Loose Marquise Pietersite, 19.5 x 7.4 mm From Namibia

17.93 carat Trillion Ammolite, loose Certified Ammolite from Canada, Natural Gem, 28.5 x 16.5 mm

9.58 carat Ammolite, loose Certified Ammolite from Canada, Natural Gem, 22.2 x 9.7 mm

3 carat Trillion Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 10.1 x 10 mm

10.75 ct Round Petal Cut Smoky Quartz, 13.5 mm From Brazil

8.28 ct Oval Cut Strawberry Quartz, 14.6 x 11.9 mm From Russia

0.31 carat Pear Shape Ruby, loose Certified Ruby from Myanmar, Natural Gem, 5.1 x 3.9 mm

4.89 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gem, 14.2 x 10.2 mm

18.43 ct Green Amazonite, 20 x 10.3 mm Marquise Cut From Madagascar

18.63 ct Oval Fossil Coral, 19.9 x 13.1 mm From Indonesia

6.28 ct Baguette Tiger's Eye, 12 x 10 mm From Thailand

1.69 carat Swiss Blue Topaz, Oval loose Topaz from Brazil, Natural Gem, 7.9 x 6 mm

12.04 carat Oval Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gems, 13.9 x 10 mm

Gemstone Information

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