Calibrated 12 x 10 mm Cushion Shape Loose Natural Gemstones from GemSelect

Cushion Cut 12x10 mm Gems

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 12 mm x 10 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.

Gemstone Information

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Overall Rating -> 10

So many stones, so little time and money. Easy to fill up the cart when the stones are beautifully pictured. I hope the real items are as beautiful.

Posted By Wen in January, 2023

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Overall Rating -> 10

It was fast purchasing procesos, very clear and precise, loved It

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Overall Rating -> 8

1st time buy. The experience to date has been easy.

Posted By Q in December, 2022

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Overall Rating -> 10

I really like how many options there are and the fact that each stone has multiple photos and clearly explains where they came from and their size and quality

Posted By Shaberu in December, 2022

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Overall Rating -> 9

As long as I continue to have confidence that what I am buying is genuinely what is being advertised then I am happy. If an item is listed as natural but is actually lab created, well that would be the last time I support this company.

Posted By Zac in December, 2022

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Overall Rating -> 10

blessed be the lord blessed be the saved blessed be the work blessed be the traveled i write down my good times in these stones and when times are gray i can still se the sunny days refract in these stones

Posted By Kickbass.2 in May, 2023

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Overall Rating -> 10

I have been shopping with Jim select for quite a few years. The descriptions of the gyms are accurate and the selection is very broad. Anyone looking for loose gyms, this is the place to go. Check out is easy.Pricing is very reasonable.

Posted By Ronald in January, 2023

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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!

Posted By Beachcomber in September, 2023

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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

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Overall Rating -> 9

Good interaction with site

Posted By Brick in September, 2023

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Overall Rating -> 10

great. thank you

Posted By Carrotroller in July, 2023

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Overall Rating -> 10

It was easy to find the color gem I desired and checkout was simple as well. Very excited to receive my gemstone.

Posted By Nikki J in September, 2023

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Overall Rating -> 10

I have been looking for a good place to buy gem stones for my girlfriends engagement ring and this site has stones I didn't even know existed. They have all the stones I need to bring her ring to life.

Posted By Sean T in February, 2023

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Overall Rating -> 8

The pictures could be improved

Posted By Jaguar in January, 2023

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Overall Rating -> 10

Love all the filters. Easy to find the size I needed.

Posted By Melinda in December, 2022

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Selected Gemstones

Gemstones A-Z

Buy Cushion Cut 12x10 mm Gems

7.98 ct Blue Tanzanite, 12.3 x 10.4 mm Cushion Cut From Tanzania

6.65 ct Cushion Cut Color-Change Diaspore, 11.7 x 9.8 mm From Turkey

5.58 ct Cushion Checkerboard Prehnite, 12 x 10 mm From South Africa

4.65 ct Yellow Citrine, 12.1 x 9.9 mm Cushion Buff Top From Brazil

15.19 ct Black Spinel, 12 x 10.1 mm Cushion Rose Cut From Thailand

4.8 ct Yellow Citrine, 12 x 9.9 mm Cushion Buff Top From Brazil

4.96 ct Yellow Citrine, 12.1 x 10.1 mm Cushion Buff Top From Brazil

6.43 ct Loose White Topaz, 12 x 9.9 mm Cushion Cut From Brazil

6.72 ct Pink Azotic Topaz, 12.1 x 10.1 mm Cushion Cut From Brazil

6.41 ct Pink Azotic Topaz, 12.1 x 10.2 mm Cushion Cut From Brazil

4.32 ct Yellow Citrine, 12.1 x 10.1 mm Cushion Buff Top From Brazil

6.33 ct Pink Azotic Topaz, 12.1 x 10.1 mm Cushion Cut From Brazil

14.55 ct Black Spinel, 12.1 x 10.1 mm Cushion Rose Cut From Thailand

4.42 ct Pink Azotic Topaz, 12.1 x 10.1 mm Cushion Cut From Brazil

14.57 ct Black Spinel, 12 x 10.1 mm Cushion Rose Cut From Thailand

4.84 ct Loose White Topaz, 12.1 x 10 mm Cushion Cut From Brazil

6.3 ct Pink Azotic Topaz, 12.2 x 10.1 mm Cushion Cut From Brazil

4.68 ct Yellow Citrine, 12.1 x 10.1 mm Cushion Buff Top From Brazil

6.69 ct Yellow Citrine, 12.2 x 10.2 mm Cushion Buff Top From Brazil

6.32 ct Loose Black Tourmaline, 12.3 x 9.8 mm Cushion Cut From Mozambique

13.53 ct Pink Azotic Topaz, 12.2 x 10.1 mm Cushion Cut From Brazil

14.5 ct Black Spinel, 12.1 x 10.2 mm Cushion Rose Cut From Thailand

5.12 ct Yellow Citrine, 12.1 x 10.1 mm Cushion Cut From Bolivia

9.35 ct Purple Kunzite, 12.3 x 10.4 mm Cushion Cut From Afghanistan

6.5 ct Pink Azotic Topaz, 12.2 x 10.1 mm Cushion Cut From Brazil

6.13 ct Loose White Topaz, 12 x 9.9 mm Cushion Cut From Brazil

12.72 ct Pink Azotic Topaz, 12.2 x 10 mm Cushion Cut From Brazil

7.06 ct Pink Azotic Topaz, 12.1 x 10 mm Cushion Cut From Brazil

14.42 ct Black Spinel, 12 x 10.1 mm Cushion Rose Cut From Thailand

14.75 ct Black Spinel, 12 x 10.1 mm Cushion Rose Cut From Thailand

5.66 ct Yellow Citrine, 12.1 x 10.1 mm Cushion Buff Top From Brazil

12.49 ct Pink Azotic Topaz, 12.3 x 10.1 mm Cushion Cut From Brazil

Cushion Cut 12x10 mm Gems

Gemstone Information