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Buy Round Shape 12 mm Gems

Round Shape 12 mm Gems Weight
Round Shape 12 mm Gems Size
Round Shape 12 mm Gems Clarity
Round Shape 12 mm Gems Price

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ID: 438378
Weight: 13.79ct (total)
Size: 12 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 54.61
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ID: 360548
Weight: 7.56ct
Size: 12 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 39.91
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ID: 422964
Weight: 25.67ct (total)
Size: 12 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 27.11
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ID: 566715
Weight: 5.59ct
Size: 12 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 16.90
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ID: 608841
Weight: 11.12ct (total)
Size: 12 mm (calibrated)
Clarity: VVS
Content: 2 pcs
Price: $ 61.16
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ID: 602738
Weight: 5.16ct
Size: 12 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 25.00
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ID: 601512
Weight: 4.90ct
Size: 12 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 23.80
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ID: 338281
Weight: 13.62ct
Size: 12 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 224.73
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ID: 438431
Weight: 15.82ct (total)
Size: 12 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 62.65
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ID: 497338
Weight: 5.68ct
Size: 12 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 31.24
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ID: 438379
Weight: 13.54ct (total)
Size: 12 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 53.62
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ID: 601422
Weight: 5.13ct
Size: 12 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 24.92
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ID: 475302
Weight: 7.13ct
Size: 12 mm (calibrated)
Clarity: Translucent
Content: 1 pc
Price: $ 59.89
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ID: 351467
Weight: 9.88ct
Size: 12 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 43.47
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ID: 505527
Weight: 6.82ct
Size: 12 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 85.34
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ID: 501408
Weight: 6.39ct
Size: 12 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 49.20
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ID: 501048
Weight: 5.71ct
Size: 12 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 52.76
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ID: 360617
Weight: 8.34ct
Size: 12 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 36.70
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ID: 625469
Weight: 5.53ct
Size: 12 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 29.28
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ID: 505435
Weight: 6.50ct
Size: 12 mm (calibrated)
Clarity: Opaque
Price: $ 89.48
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ID: 567740
Weight: 6.99ct
Size: 12 mm (calibrated)
Clarity: Translucent
Content: 1 pc
Price: $ 17.61
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ID: 526454
Weight: avg. 12.53 ct / each
Size: 12 mm (calibrated)
Clarity: Opaque
Price: $ 15.16
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ID: 608838
Weight: 10.60ct (total)
Size: 12 mm (calibrated)
Clarity: VVS
Content: 2 pcs
Price: $ 58.30
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ID: 566966
Weight: 5.36ct
Size: 12 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 16.20
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ID: 438438
Weight: 14.30ct (total)
Size: 12 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 56.63
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ID: 566445
Weight: 24.43ct (total)
Size: 12 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 18.38
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ID: 636236
Weight: 5.46ct
Size: 12 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 45.86
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ID: 338290
Weight: 12.76ct
Size: 12 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 191.40
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ID: 567158
Weight: 4.96ct
Size: 12 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 15.00
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ID: 383905
Weight: 14.78ct (total)
Size: 12 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 58.52
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ID: 338209
Weight: 13.49ct
Size: 12 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 262.67
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ID: 548379
Weight: 12.29ct (total)
Size: 12 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 46.07
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ID: 618965
Weight: 5.78ct
Size: 12 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 29.22
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ID: 417683
Weight: 10.53ct (total)
Size: 12 mm (calibrated)
Clarity: VVS-VS
Content: 2 pcs
Price: $ 27.80
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ID: 548388
Weight: 14.10ct (total)
Size: 12 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 52.85
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ID: 503382
Weight: 6.21ct
Size: 12 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 40.44
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ID: 600305
Weight: 6.24ct
Size: 12 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 29.82
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ID: 675794
Weight: 4.65ct
Size: 12 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 13.22
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ID: 655868
Weight: 7.30ct
Size: 12 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 11.39
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ID: 448998
Weight: 6.66ct
Size: 12 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 21.98
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ID: 497339
Weight: 5.58ct
Size: 12 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 36.83
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ID: 684863
Weight: 7.55ct
Size: 12 mm (calibrated)
Clarity: Translucent
Content: 1 pc
Price: $ 10.87
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ID: 715011
Weight: 10.06ct (total)
Size: 12 mm (calibrated)
Clarity: Translucent
Content: 2 pcs
Price: $ 26.08
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ID: 401049
Weight: 6.76ct
Size: 12 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 22.31
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ID: 655866
Weight: 6.78ct
Size: 12 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 10.57
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ID: 494821
Weight: 5.03ct
Size: 12 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 19.92
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ID: 463935
Weight: 5.24ct
Size: 12 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 10.38
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ID: 548393
Weight: 14.62ct (total)
Size: 12 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 54.80
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ID: 501042
Weight: 5.42ct
Size: 12 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 50.08
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ID: 438371
Weight: 14.85ct (total)
Size: 12 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 58.81
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ID: 370168
Weight: 7.71ct
Size: 12 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 33.08
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ID: 682429
Weight: 6.30ct
Size: 12 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 37.80
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ID: 612867
Weight: 6.27ct
Size: 12 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 20.69
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ID: 600294
Weight: 5.31ct
Size: 12 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 25.37
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ID: 599135
Weight: 5.05ct
Size: 12 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 16.67
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ID: 619100
Weight: 5.06ct
Size: 12 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 25.58
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ID: 463974
Weight: 5.08ct
Size: 12 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 10.06
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ID: 600304
Weight: 5.59ct
Size: 12 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 26.71
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ID: 477933
Weight: 10.02ct
Size: 12 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 28.16
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ID: 693256
Weight: 8.35ct
Size: 12 mm (calibrated)
Clarity: Translucent
Content: 1 pc
Price: $ 20.04
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GemSelect Certified Store Reviews

GemSelect: Over 22 Years in the Gemstone Business! Thank you for trusting us with your purchase!

Overall Rating -> 10 star ratings

It was easy to navigate

Posted By GemGod in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Easy and convenient

Posted By Butch in September, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

I was able to find what I was looking for

Posted By Lincolnpremier in January, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Very good Hoping you will increase your inventory especially in the 6mm Thanks

Posted By Ibie in February, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Great for buying gemstones, came with authenticity certs. Will buy again someday!

Posted By Uggadugga in May, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Ive been looking for a place to buy loose gemstones for years and was thrilled when I found this site

Posted By Bern in October, 2024
Source: Bizrate

Overall Rating -> 8 star ratings

Easy website to navigate, lots of different varieties and options to choose from.

Posted By Brian in July, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

I have ordered from Genselect before and always had a great experience. My go to source!

Posted By Kycaver in October, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

Enjoyed shopping.

Posted By Chris in March, 2025
Source: Bizrate

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 Round shapes, facet cut and cabochon gems available now in 12 mm diameter 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 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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Over 19 Years in the Gemstone Business!

Thank you for trusting us with your purchase!

Overall Rating -> 10 star ratings

It was easy to navigate

Posted By GemGod in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Easy and convenient

Posted By Butch in September, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

I was able to find what I was looking for

Posted By Lincolnpremier in January, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Very good Hoping you will increase your inventory especially in the 6mm Thanks

Posted By Ibie in February, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Great for buying gemstones, came with authenticity certs. Will buy again someday!

Posted By Uggadugga in May, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Ive been looking for a place to buy loose gemstones for years and was thrilled when I found this site

Posted By Bern in October, 2024
Source: Bizrate

Overall Rating -> 8 star ratings

Easy website to navigate, lots of different varieties and options to choose from.

Posted By Brian in July, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

I have ordered from Genselect before and always had a great experience. My go to source!

Posted By Kycaver in October, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

Enjoyed shopping.

Posted By Chris in March, 2025
Source: Bizrate
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