Calibrated 7 x 5 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 7 x 5 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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Gemstone Information

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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 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

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Overall Rating -> 10

I love the clear description of the certification options. It's very rare to see a gem site that offers a deep explanation of each institution that would certify the stone(s).

Posted By Oakcityceo in May, 2023

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Overall Rating -> 10

all good

Posted By John in December, 2023

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Overall Rating -> 10

Found what I was looking for

Posted By Rian in June, 2023

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Overall Rating -> 10

The site was easy to shop and the payment was secure. I’m looking forward to receiving my order!

Posted By JAB93 in June, 2023

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Overall Rating -> 10

I have actually done business with them before and was quite satisfied with them then.My Mother collected turtle items and when I saw the Mother of Pearl turtle...I just thought of her and decided to buy it. It's even tinier than I thought, but so adorable!The gemstones I bought are for jewelry for my daughter's birthday.

Posted By Ktreva52 in February, 2024

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Overall Rating -> 10

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

Posted By GemGrammy in January, 2024

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Overall Rating -> 10

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

Posted By Lindsy in October, 2023

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Overall Rating -> 7

I feel pretty good so far, pending the delivery of the item ordered.

Posted By Steve in November, 2023

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Overall Rating -> 10

first time here sooooooooooo we will seeeee!!!!! so far so good!!!!!!

Posted By Seastone 56 in October, 2023

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Overall Rating -> 10

Love the variety of stones, sizes and the prices

Posted By Dorita in March, 2024

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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

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Overall Rating -> 10

Easy to use,I have spent many hours looking at the site

Posted By Skip in November, 2023

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Overall Rating -> 10

Very excited and impressed with all your products. Keep up the good work....more different stones to choose from. I like Cabachons.

Posted By Meow in June, 2023

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Gemstones A-Z

Buy Octagon Shape 7x5 mm Gems

3.32 carat Sky Blue Topaz, Princess-Cut loose Topaz from Brazil, Natural Gem, 8.3 x 8.3 mm

0.82 ct Purple Spinel, 6.7 x 4.8 mm Oval Cut From Tanzania

0.18 ct Brown Diamond, 3.6 mm Diamond Cut From India

1.19 carat Blue Tanzanite, Oval loose Tanzanite from Tanzania, Natural Gem, 7.9 x 6.1 mm

0.62 ct Loose Orange Sapphire, 4.4 x 4.4 mm Cushion Cut From Tanzania

13.51 carat Pear Quartz With Marcasite, loose Certified Quartz With Marcasite from Brazil, Natural Untreated Gem, 23.4 x 13.9 mm

0.68 carat Oval Emerald, loose Certified Emerald from Colombia, Natural Gem, 6.1 x 5.2 mm

0.8 carat Diamond Demantoid Garnet, loose Certified Demantoid Garnet from Namibia, Natural Untreated Gems, 3.2 mm

4.41 carat White Zircon, Diamond-Cut loose Zircon from Cambodia, Natural Gems, 6 mm

28.81 ct Oval Pietersite, 30 x 22.1 mm From Namibia

36.05 ct Marquise Charoite, 41.9 x 14.8 mm From Russia

6.23 ct Yellow Quartz, 12.7 x 9.7 mm Oval Cut From Brazil

0.3 carat Round Emerald, loose Certified Emerald from Colombia, Natural Gem, 3.9 mm

2.21 carat Yellow Citrine, Trillion loose Citrine from Brazil, Natural Untreated Gem, 9.2 x 9.1 mm

14.93 ct Baguette Tiger's Eye, 14.1 x 10.2 mm From Thailand

4.97 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gems, 10.2 x 8 mm

1.21 ct Oval Checkerboard Rainbow Moonstone, 6.9 x 6 mm From India

12 carat Brown Hessonite Garnet, Oval loose Hessonite Garnet from Sri Lanka, Natural Untreated Gems, 13.1 x 10.2 mm

21.9 ct Marquise Rose Quartz, 29.8 x 13.8 mm From South Africa

50.04 ct Fancy Jasper, 46.2 x 28.5 mm From Indonesia

1.22 ct Yellow Sphene, 7.2 x 5.3 mm Oval Cut From Sri Lanka

1.95 carat Yellow Citrine, Round loose Citrine from Brazil, Natural Untreated Gem, 8.2 mm

8.87 ct Carved Prehnite, 16.6 x 11.2 mm From South Africa

1.21 carat Square Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 6.1 x 6.1 mm

1.89 carat Oval Opal, loose Certified Opal from Ethiopia, Natural Untreated Gem, 11.7 x 7.9 mm

9.34 ct Oval Star Moonstone, 18.8 x 10.6 mm From India

2.44 ct Blue Green Grandidierite, 9.9 x 7.1 mm Oval Cut From Madagascar

21.42 ct Green Amazonite, 29.5 mm Pencil Cut From Madagascar

3.91 ct Oval Prehnite, 10.6 x 8.8 mm From South Africa

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

9.31 carat Green Fluorite, Pear Shape loose Fluorite from India, Natural Untreated Gem, 13.9 x 11.2 mm

0.76 carat Green Tourmaline, Emerald Cut loose Tourmaline from Tanzania, Natural Untreated Gem, 11.5 x 3.7 mm

Gemstone Information

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Gemstone EDUCATION

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