Calibrated 8 x 6 mm Cushion Shape Loose Natural Gemstones from Gem...

Some people by gems by color or price, but for many, it is best to buy gems by size - especially if you're in need of a gem to replace a previous item that was lost or damaged. Calibrated cushion shapes, facet cut and cabochon gems available now in 8 mm x 6 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

Very detailed and great pictures

Posted By Alexandrite 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

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

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Overall Rating -> 10

Very large selection of items and we used the stones to have several pieces of jewelry made for us.

Posted By Joe in January, 2024

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Overall Rating -> 9

My first purchase went well. I will purchase more gems in the future.

Posted By NoHalalAl in March, 2024

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Overall Rating -> 10

Fine. All emails answered. Excellent service. Nice discount added for orders. Briefly, a very good experience.

Posted By C.J. in February, 2024

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Overall Rating -> 8

I did not realize how small the stone was. I cannot use it for the project I wanted, but I am keeping the stone and tru to use it in something else.

Posted By Mark in March, 2024

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Overall Rating -> 10

This is only the second time I have ordered from GemSelect. I am a prolific gemstone collector and I wish I had found this site sooner!

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Overall Rating -> 10

Super easy to do business for great products.

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Overall Rating -> 10

Great site

Posted By Lord of Bananas in November, 2023

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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

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Overall Rating -> 10

the searching format was easy to find what i needed. It helped to be able to sort Lowest price to Highest because i wasnt looking to spend too much but i did want an actual stone and not imitation.

Posted By PixelComposer in January, 2024

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Overall Rating -> 10

The gems were as described, which is kind of rare these days. I am happy with the purchase, and delevery on time.

Posted By T-bone in October, 2023

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Overall Rating -> 10

Love Gem select. great gems for the price. Can't beet them

Posted By Apps in September, 2023

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Overall Rating -> 10

Excellent selection of products. Website easy to navigate and make purchases.

Posted By David in April, 2023

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Gemstones A-Z

Buy Cushion Cut 8x6 mm Gems

7.15 carat White Topaz, Square loose Topaz from Brazil, Natural Untreated Gems, 5.1 x 5 mm

0.91 ct Cushion Cut Color-Change Diaspore, 7.2 x 4.8 mm From Turkey

39.29 ct Loose Oval Bloodstone, 26.5 x 17 mm From Madagascar

5.97 carat Black Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 12.3 x 8.4 mm

13.53 ct Baguette Malachite, 11 x 9.1 mm From Congo

1.29 carat Orange Hessonite Garnet, Emerald Cut loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 6 x 5.8 mm

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

2.66 carat Sky Blue Topaz, Trillion loose Topaz from Brazil, Natural Gems, 7.1 x 7 mm

14.3 carat Oval Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 18.8 x 13.1 mm

38.5 carat Pear Sodalite, loose Certified Sodalite from Australia, Natural Untreated Gem, 41.5 x 26.3 mm

5.12 carat Pear Coral, loose Certified Coral from Indonesia, Natural Untreated Gem, 14.3 x 10.8 mm

1.88 carat Yellow Citrine, Marquise Cut loose Citrine from Brazil, Natural Untreated Gems, 9.2 x 5.1 mm

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

2.58 carat Trillion Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 10 x 9.8 mm

3.3 carat Yellow Citrine, Round loose Citrine from Brazil, Natural Untreated Gems, 8.1 mm

4.1 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gem, 12.8 x 9 mm

0.55 carat Blue Sapphire, Marquise-Cut loose Sapphire from Madagascar, Natural Gem, 7.8 x 3.8 mm

0.4 ct Oval Chrysoberyl Cat's Eye, 4.2 x 4 mm From Sri Lanka

17.32 ct Carved Smoky Quartz, 33.2 x 18.6 mm From Brazil

13.53 carat Multicolor Ammolite, loose Ammolite from Canada, Natural Gem, 15.7 x 15.2 mm

39.01 ct Oval Snowflake Obsidian, 34.3 x 23.1 mm From India

1.64 carat Oval Opal, loose Certified Opal from Ethiopia, Natural Untreated Gems, 7 x 5 mm

1.14 carat Yellow Citrine, Pear Shape loose Citrine from Brazil, Natural Untreated Gems, 7.1 x 5 mm

34.95 ct Oval Psilomelane Dendrite, 33.7 x 21.1 mm From Mexico

7.48 carat White Zircon, Oval loose Zircon from Cambodia, Natural Gems, 7.2 x 5.2 mm

30.78 ct Oval Tiger's Eye Matrix, 32.2 x 19.3 mm From Mexico

0.91 carat London Blue Topaz, Oval loose Topaz from Brazil, Natural Gem, 6.9 x 5 mm

24.46 ct Oval Fossil Coral, 19.5 x 12 mm From Indonesia

3.06 carat Red Zircon, Oval loose Zircon from Tanzania, Natural Untreated Gem, 9 x 7.1 mm

15.01 ct Black Spinel, 14.2 x 10.2 mm Oval Rose Cut From Thailand

3.52 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gem, 14.1 x 8.1 mm

4.58 carat Sky Blue Topaz, Round loose Topaz from Brazil, Natural Gems, 8.1 mm

Gemstone Information

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