Buy Round Shape 12 mm Gems
Bi-color
Black Round Shape 12 mm Gems
Blue Round Shape 12 mm Gems
Brown Round Shape 12 mm Gems
Golden Round Shape 12 mm Gems
Gray Round Shape 12 mm Gems
Green Round Shape 12 mm Gems
Multicolor Round Shape 12 mm Gems
Orange Round Shape 12 mm Gems
Pink Round Shape 12 mm Gems
Purple
Red Round Shape 12 mm Gems
Turquoise Round Shape 12 mm Gems
Violet Round Shape 12 mm Gems
White Round Shape 12 mm Gems
Yellow Round Shape 12 mm Gems
Clear Colors
Single
Pairs
Lots
Faceted
Cabochons
Showing results for
Sort By:
Price - High to Low
Price - Low to High
Size - Largest to Smallest
Size - Smallest to Largest
Weight - High to Low
Weight - Low to High
Gemtypes in Category:
Agate (24)
Amethyst (4)
Apatite (1)
Black Opal (2)
Cat's Eye Scapolite (1)
Citrine (28)
Jadeite (3)
Jasper (10)
Labradorite (20)
Larimar (14)
Maw-Sit-Sit (5)
Morganite (4)
Mystic Quartz (10)
Opal (1)
Pearl (7)
Pietersite (9)
Quartz (58)
Quartz Cat's Eye (24)
Rose Quartz (10)
Ruby-Zoisite (1)
Rutile Quartz (29)
Seraphinite (1)
Smoky Quartz (92)
Spinel (57)
Star Diopside (11)
Star Garnet (2)
Star Sapphire (2)
Strawberry Quartz (2)
Sunstone (3)
Tiger's Eye (10)
Tiger's Eye Matrix (1)
Clear All
ID:
338262
Weight:
4.95ct
Size:
12 mm (calibrated)
Clarity:
VVS-VS
Content:
1 pc
Price:
$
48.02
Item in Stock
More Options & Item Details
ID:
501045
Weight:
5.93ct
Size:
12 mm (calibrated)
Clarity:
VVS-VS
Content:
1 pc
Price:
$
54.79
Item in Stock
More Options & Item Details
ID:
548395
Weight:
12.96ct (total)
Size:
12 mm (calibrated)
Clarity:
Opaque
Content:
2 pcs
Price:
$
48.59
Item in Stock
More Options & Item Details
ID:
414370
Weight:
6.88ct
Size:
12 mm (calibrated)
Clarity:
Transparent
Content:
1 pc
Price:
$
45.41
Item in Stock
More Options & Item Details
ID:
548387
Weight:
12.44ct (total)
Size:
12 mm (calibrated)
Clarity:
Opaque
Content:
2 pcs
Price:
$
46.63
Item in Stock
More Options & Item Details
ID:
619138
Weight:
9.66ct (total)
Size:
12 mm (calibrated)
Clarity:
Translucent
Content:
2 pcs
Price:
$
25.50
Item in Stock
More Options & Item Details
ID:
526453
Weight:
avg. 12.26 ct / each
Size:
12 mm (calibrated)
Clarity:
Opaque
Price:
$
14.83
Item in Stock
More Options & Item Details
Select
1
2
3
4
5
6
7
8
9
10
11
12
pcs
ID:
548385
Weight:
11.50ct (total)
Size:
12 mm (calibrated)
Clarity:
Opaque
Content:
2 pcs
Price:
$
43.12
Item in Stock
More Options & Item Details
ID:
370168
Weight:
7.71ct
Size:
12 mm (calibrated)
Clarity:
Transparent
Content:
1 pc
Price:
$
33.08
Item in Stock
More Options & Item Details
ID:
500975
Weight:
6.28ct
Size:
12 mm (calibrated)
Clarity:
VVS
Content:
1 pc
Price:
$
58.03
Item in Stock
More Options & Item Details
ID:
611906
Weight:
5.45ct
Size:
12 mm (calibrated)
Clarity:
VVS
Content:
1 pc
Price:
$
21.59
Item in Stock
More Options & Item Details
ID:
608843
Weight:
9.99ct (total)
Size:
12 mm (calibrated)
Clarity:
VVS-VS
Content:
2 pcs
Price:
$
65.94
Item in Stock
More Options & Item Details
ID:
438380
Weight:
12.72ct (total)
Size:
12 mm (calibrated)
Clarity:
Opaque
Content:
2 pcs
Price:
$
50.38
Item in Stock
More Options & Item Details
ID:
438372
Weight:
15.03ct (total)
Size:
12 mm (calibrated)
Clarity:
Opaque
Content:
2 pcs
Price:
$
59.52
Item in Stock
More Options & Item Details
ID:
438371
Weight:
14.85ct (total)
Size:
12 mm (calibrated)
Clarity:
Opaque
Content:
2 pcs
Price:
$
58.81
Item in Stock
More Options & Item Details
ID:
706371
Weight:
8.10ct
Size:
12 mm (calibrated)
Clarity:
Opaque
Content:
1 pc
Price:
$
16.52
Item in Stock
More Options & Item Details
ID:
721200
Weight:
3.30ct
Size:
12 mm (calibrated)
Clarity:
VVS
Content:
1 pc
Price:
$
23.76
Item in Stock
More Options & Item Details
ID:
567158
Weight:
4.96ct
Size:
12 mm (calibrated)
Clarity:
Transparent
Content:
1 pc
Price:
$
15.00
Item in Stock
More Options & Item Details
ID:
407962
Weight:
6.41ct
Size:
12 mm (calibrated)
Clarity:
VVS-VS
Price:
$
15.14
Item in Stock
More Options & Item Details
Select
1
2
3
pcs 0 in Cart
ID:
600299
Weight:
5.17ct
Size:
12 mm (calibrated)
Clarity:
Transparent
Content:
1 pc
Price:
$
24.71
Item in Stock
More Options & Item Details
ID:
407963
Weight:
5.78ct
Size:
12 mm (calibrated)
Clarity:
VVS
Price:
$
13.67
Item in Stock
More Options & Item Details
ID:
378274
Weight:
11.99ct (total)
Size:
12 mm (calibrated)
Clarity:
Opaque
Content:
2 pcs
Price:
$
47.48
Item in Stock
More Options & Item Details
ID:
384555
Weight:
13.47ct (total)
Size:
12 mm (calibrated)
Clarity:
Opaque
Content:
2 pcs
Price:
$
53.34
Item in Stock
More Options & Item Details
ID:
503806
Weight:
6.60ct
Size:
12 mm (calibrated)
Clarity:
VVS-VS
Content:
1 pc
Price:
$
26.14
Item in Stock
More Options & Item Details
ID:
417762
Weight:
8.25ct
Size:
12 mm (calibrated)
Clarity:
VVS-VS
Price:
$
19.61
Item in Stock
More Options & Item Details
ID:
567279
Weight:
6.73ct
Size:
12 mm (calibrated)
Clarity:
Translucent
Content:
1 pc
Price:
$
20.34
Item in Stock
More Options & Item Details
ID:
672460
Weight:
7.02ct (total)
Size:
12 mm (calibrated)
Clarity:
Opaque
Content:
2 pcs
Price:
$
19.80
Item in Stock
More Options & Item Details
ID:
619362
Weight:
5.22ct
Size:
12 mm (calibrated)
Clarity:
Transparent
Content:
1 pc
Price:
$
26.39
Item in Stock
More Options & Item Details
ID:
435122
Weight:
27.14ct (total)
Size:
12 mm (calibrated)
Clarity:
Transparent
Content:
2 pcs
Price:
$
29.85
Item in Stock
More Options & Item Details
ID:
625148
Weight:
5.61ct
Size:
12 mm (calibrated)
Clarity:
VVS
Content:
1 pc
Price:
$
29.70
Item in Stock
More Options & Item Details
ID:
470801
Weight:
9.28ct
Size:
12 mm (calibrated)
Clarity:
Opaque
Content:
1 pc
Price:
$
428.74
Item in Stock
More Options & Item Details
ID:
463933
Weight:
5.09ct
Size:
12 mm (calibrated)
Clarity:
VVS-VS
Content:
1 pc
Price:
$
10.08
Item in Stock
More Options & Item Details
ID:
470800
Weight:
10.97ct
Size:
12 mm (calibrated)
Clarity:
Opaque
Content:
1 pc
Price:
$
506.82
Item in Stock
More Options & Item Details
ID:
721524
Weight:
8.38ct
Size:
12 mm (calibrated)
Clarity:
Opaque
Content:
1 pc
Price:
$
10.06
Item in Stock
More Options & Item Details
ID:
464130
Weight:
6.01ct
Size:
12 mm (calibrated)
Clarity:
VVS-VS
Content:
1 pc
Price:
$
11.90
Item in Stock
More Options & Item Details
ID:
459547
Weight:
5.18ct
Size:
12 mm (calibrated)
Clarity:
VVS-VS
Price:
$
10.26
Item in Stock
More Options & Item Details
ID:
497339
Weight:
5.58ct
Size:
12 mm (calibrated)
Clarity:
VVS
Content:
1 pc
Price:
$
36.83
Item in Stock
More Options & Item Details
ID:
512001
Weight:
7.10ct
Size:
12 mm (calibrated)
Clarity:
VVS
Content:
1 pc
Price:
$
10.21
Item in Stock
More Options & Item Details
ID:
569737
Weight:
6.14ct
Size:
12 mm (calibrated)
Clarity:
Translucent
Content:
1 pc
Price:
$
45.23
Item in Stock
More Options & Item Details
ID:
470715
Weight:
7.91ct
Size:
12 mm (calibrated)
Clarity:
Translucent
Content:
1 pc
Price:
$
31.32
Item in Stock
More Options & Item Details
ID:
599360
Weight:
5.64ct
Size:
12 mm (calibrated)
Clarity:
Transparent
Content:
1 pc
Price:
$
27.02
Item in Stock
More Options & Item Details
ID:
618961
Weight:
5.51ct
Size:
12 mm (calibrated)
Clarity:
Transparent
Content:
1 pc
Price:
$
27.85
Item in Stock
More Options & Item Details
ID:
505523
Weight:
6.73ct
Size:
12 mm (calibrated)
Clarity:
Opaque
Content:
1 pc
Price:
$
84.20
Item in Stock
More Options & Item Details
ID:
618966
Weight:
5.56ct
Size:
12 mm (calibrated)
Clarity:
Transparent
Content:
1 pc
Price:
$
28.10
Item in Stock
More Options & Item Details
ID:
500968
Weight:
5.78ct
Size:
12 mm (calibrated)
Clarity:
VVS
Content:
1 pc
Price:
$
53.41
Item in Stock
More Options & Item Details
ID:
619990
Weight:
8.40ct (total)
Size:
12 mm (calibrated)
Clarity:
Translucent
Content:
2 pcs
Price:
$
22.18
Item in Stock
More Options & Item Details
ID:
508721
Weight:
avg. 4.85 ct / each
Size:
12 mm (calibrated)
Clarity:
Opaque
Price:
$
5.65
Item in Stock
More Options & Item Details
Select
1
2
3
4
5
6
7
8
9
10
11
pcs
ID:
338284
Weight:
12.39ct
Size:
12 mm (calibrated)
Clarity:
Opaque
Content:
1 pc
Price:
$
245.33
Item in Stock
More Options & Item Details
ID:
715014
Weight:
12.21ct (total)
Size:
12 mm (calibrated)
Clarity:
Translucent
Content:
2 pcs
Price:
$
31.64
Item in Stock
More Options & Item Details
ID:
360547
Weight:
7.63ct
Size:
12 mm (calibrated)
Clarity:
Transparent
Content:
1 pc
Price:
$
40.28
Item in Stock
More Options & Item Details
ID:
417763
Weight:
7.66ct
Size:
12 mm (calibrated)
Clarity:
VVS
Price:
$
18.20
Item in Stock
More Options & Item Details
ID:
378272
Weight:
12.95ct (total)
Size:
12 mm (calibrated)
Clarity:
Opaque
Content:
2 pcs
Price:
$
51.29
Item in Stock
More Options & Item Details
ID:
505538
Weight:
6.92ct
Size:
12 mm (calibrated)
Clarity:
Opaque
Content:
1 pc
Price:
$
95.24
Item in Stock
More Options & Item Details
ID:
600324
Weight:
6.39ct
Size:
12 mm (calibrated)
Clarity:
VVS
Price:
$
30.53
Item in Stock
More Options & Item Details
ID:
737553
Weight:
6.96ct
Size:
12 mm (calibrated)
Clarity:
Opaque
Content:
1 pc
Price:
$
41.76
Item in Stock
More Options & Item Details
ID:
463914
Weight:
4.43ct
Size:
12 mm (calibrated)
Clarity:
VVS-VS
Price:
$
8.78
Item in Stock
More Options & Item Details
ID:
370171
Weight:
7.51ct
Size:
12 mm (calibrated)
Clarity:
Transparent
Content:
1 pc
Price:
$
32.22
Item in Stock
More Options & Item Details
ID:
710201
Weight:
3.43ct
Size:
12 mm (calibrated)
Clarity:
Opaque
Content:
1 pc
Price:
$
10.00
Item in Stock
More Options & Item Details
ID:
595217
Weight:
6.96ct
Size:
12 mm (calibrated)
Clarity:
Translucent
Content:
1 pc
Price:
$
91.87
Item in Stock
More Options & Item Details
ID:
700727
Weight:
12.89ct
Size:
12 mm (calibrated)
Clarity:
Opaque
Content:
1 pc
Price:
$
12.37
Item in Stock
More Options & Item Details
Why Buy Round Shape 12 Mm Gems from GemSelect?
GemSelect Certified Store ReviewsGemSelect: Over 22 Years in the Gemstone Business! Thank you for trusting us with your purchase!
Overall Rating -> 9
It was great!
Posted By Annie in September, 2025
Source: Bizrate
Overall Rating -> 10
I can pick and choose from large selection and find just what I need for .y projects, currently my cane.
Posted By Darkstar731 in July, 2025
Source: Bizrate
Overall Rating -> 10
I was looking for a site with every type of gem I could want for setting in luxury blades and assumed I would need to look outside the US, but GemSelect made it easy to get everything I wanted without leaving the house! Wide enough selection that I do not feel the need to look elsewhere and pricing the same.
Posted By Razormane in April, 2025
Source: Bizrate
Overall Rating -> 10
A pleasant experience and many choices to choose from
Posted By Krackenking in November, 2025
Source: Bizrate
Overall Rating -> 9
It was a good experience looking for and finding a nice amethyst stone
Posted By N/a in May, 2025
Source: Bizrate
Overall Rating -> 10
Gem Select has a user friendly website and the product is very good as is the price. The gems are described accurately and I always get what I think I'm getting.
Posted By Happy Customer in June, 2025
Source: Bizrate
