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
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 (27)
Jadeite (3)
Jasper (10)
Labradorite (20)
Larimar (14)
Maw-Sit-Sit (5)
Morganite (4)
Mystic Quartz (9)
Opal (1)
Pearl (7)
Pietersite (9)
Quartz (58)
Quartz Cat's Eye (23)
Rose Quartz (10)
Ruby-Zoisite (1)
Rutile Quartz (30)
Seraphinite (1)
Smoky Quartz (89)
Spinel (57)
Star Diopside (11)
Star Garnet (2)
Star Sapphire (2)
Strawberry Quartz (2)
Sunstone (2)
Tiger's Eye (9)
Tiger's Eye Matrix (1)
Clear All
ID:
609032
Weight:
5.25
Size:
12 mm (calibrated)
Clarity:
VVS
Content:
1 pc
Price:
$
34.66
Item in Stock
More Options & Item Details
ID:
378274
Weight:
11.99
Size:
12 mm (calibrated)
Clarity:
Opaque
Content:
2 pcs
Price:
$
47.48
Item in Stock
More Options & Item Details
ID:
503794
Weight:
4.20
Size:
12 mm (calibrated)
Clarity:
VVS
Content:
1 pc
Price:
$
16.63
Item in Stock
More Options & Item Details
ID:
505524
Weight:
7.03
Size:
12 mm (calibrated)
Clarity:
Opaque
Content:
1 pc
Price:
$
87.98
Item in Stock
More Options & Item Details
ID:
737368
Weight:
9.82
Size:
12 mm (calibrated)
Clarity:
Opaque
Content:
1 pc
Price:
$
58.92
Item in Stock
More Options & Item Details
ID:
607809
Weight:
5.47
Size:
12 mm (calibrated)
Clarity:
VVS
Content:
1 pc
Price:
$
36.11
Item in Stock
More Options & Item Details
ID:
497345
Weight:
4.94
Size:
12 mm (calibrated)
Clarity:
VVS-VS
Content:
1 pc
Price:
$
32.60
Item in Stock
More Options & Item Details
ID:
601898
Weight:
4.90
Size:
12 mm (calibrated)
Clarity:
VVS
Content:
1 pc
Price:
$
23.80
Item in Stock
More Options & Item Details
ID:
548387
Weight:
12.44
Size:
12 mm (calibrated)
Clarity:
Opaque
Content:
2 pcs
Price:
$
46.63
Item in Stock
More Options & Item Details
ID:
618964
Weight:
6.18
Size:
12 mm (calibrated)
Clarity:
Opaque
Content:
1 pc
Price:
$
31.25
Item in Stock
More Options & Item Details
ID:
602731
Weight:
5.53
Size:
12 mm (calibrated)
Clarity:
VVS
Content:
1 pc
Price:
$
26.80
Item in Stock
More Options & Item Details
ID:
710374
Weight:
6.13
Size:
12 mm (calibrated)
Clarity:
Opaque
Content:
1 pc
Price:
$
14.90
Item in Stock
More Options & Item Details
ID:
495385
Weight:
6.50
Size:
12 mm (calibrated)
Clarity:
Translucent
Content:
1 pc
Price:
$
42.90
Item in Stock
More Options & Item Details
ID:
599367
Weight:
5.23
Size:
12 mm (calibrated)
Clarity:
Transparent
Content:
1 pc
Price:
$
25.06
Item in Stock
More Options & Item Details
ID:
470586
Weight:
13.90
Size:
12 mm (calibrated)
Clarity:
Translucent
Content:
2 pcs
Price:
$
55.04
Item in Stock
More Options & Item Details
ID:
438373
Weight:
14.92
Size:
12 mm (calibrated)
Clarity:
Opaque
Content:
2 pcs
Price:
$
59.09
Item in Stock
More Options & Item Details
ID:
618967
Weight:
5.14
Size:
12 mm (calibrated)
Clarity:
Transparent
Content:
1 pc
Price:
$
25.99
Item in Stock
More Options & Item Details
ID:
548390
Weight:
14.33
Size:
12 mm (calibrated)
Clarity:
Opaque
Content:
2 pcs
Price:
$
53.72
Item in Stock
More Options & Item Details
ID:
378270
Weight:
13.85
Size:
12 mm (calibrated)
Clarity:
Opaque
Content:
2 pcs
Price:
$
54.85
Item in Stock
More Options & Item Details
ID:
619362
Weight:
5.22
Size:
12 mm (calibrated)
Clarity:
Transparent
Content:
1 pc
Price:
$
26.39
Item in Stock
More Options & Item Details
ID:
500968
Weight:
5.78
Size:
12 mm (calibrated)
Clarity:
VVS
Content:
1 pc
Price:
$
53.41
Item in Stock
More Options & Item Details
ID:
494814
Weight:
5.27
Size:
12 mm (calibrated)
Clarity:
VVS-VS
Content:
1 pc
Price:
$
20.87
Item in Stock
More Options & Item Details
ID:
567110
Weight:
5.04
Size:
12 mm (calibrated)
Clarity:
Translucent
Content:
1 pc
Price:
$
15.23
Item in Stock
More Options & Item Details
ID:
600296
Weight:
5.41
Size:
12 mm (calibrated)
Clarity:
Transparent
Content:
1 pc
Price:
$
25.85
Item in Stock
More Options & Item Details
ID:
611906
Weight:
5.45
Size:
12 mm (calibrated)
Clarity:
VVS
Content:
1 pc
Price:
$
21.59
Item in Stock
More Options & Item Details
ID:
361825
Weight:
20.89
Size:
12 mm (calibrated)
Clarity:
Opaque
Content:
2 pcs
Price:
$
27.58
Item in Stock
More Options & Item Details
ID:
438490
Weight:
15.28
Size:
12 mm (calibrated)
Clarity:
Opaque
Content:
2 pcs
Price:
$
60.50
Item in Stock
More Options & Item Details
ID:
600305
Weight:
6.24
Size:
12 mm (calibrated)
Clarity:
Transparent
Content:
1 pc
Price:
$
29.82
Item in Stock
More Options & Item Details
ID:
476907
Weight:
7.68
Size:
12 mm (calibrated)
Clarity:
Opaque
Content:
1 pc
Price:
$
30.41
Item in Stock
More Options & Item Details
ID:
408782
Weight:
6.27
Size:
12 mm (calibrated)
Clarity:
VVS
Price:
$
10.69
Item in Stock
More Options & Item Details
ID:
699646
Weight:
5.13
Size:
12 mm (calibrated)
Clarity:
VVS-VS
Content:
1 pc
Price:
$
18.47
Item in Stock
More Options & Item Details
ID:
611436
Weight:
4.39
Size:
12 mm (calibrated)
Clarity:
VVS
Content:
1 pc
Price:
$
17.39
Item in Stock
More Options & Item Details
ID:
417642
Weight:
7.37
Size:
12 mm (calibrated)
Clarity:
VVS-VS
Content:
1 pc
Price:
$
15.56
Item in Stock
More Options & Item Details
ID:
414444
Weight:
7.65
Size:
12 mm (calibrated)
Clarity:
Transparent
Content:
1 pc
Price:
$
50.50
Item in Stock
More Options & Item Details
ID:
360542
Weight:
7.30
Size:
12 mm (calibrated)
Clarity:
Transparent
Content:
1 pc
Price:
$
38.54
Item in Stock
More Options & Item Details
ID:
500977
Weight:
6.20
Size:
12 mm (calibrated)
Clarity:
VVS
Content:
1 pc
Price:
$
57.29
Item in Stock
More Options & Item Details
ID:
370244
Weight:
7.77
Size:
12 mm (calibrated)
Clarity:
Transparent
Content:
1 pc
Price:
$
33.34
Item in Stock
More Options & Item Details
ID:
700577
Weight:
12.70
Size:
12 mm (calibrated)
Clarity:
Opaque
Content:
1 pc
Price:
$
12.19
Item in Stock
More Options & Item Details
ID:
384490
Weight:
13.20
Size:
12 mm (calibrated)
Clarity:
Opaque
Content:
2 pcs
Price:
$
52.27
Item in Stock
More Options & Item Details
ID:
407962
Weight:
6.41
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:
567155
Weight:
5.96
Size:
12 mm (calibrated)
Clarity:
Transparent
Content:
1 pc
Price:
$
18.02
Item in Stock
More Options & Item Details
ID:
505523
Weight:
6.73
Size:
12 mm (calibrated)
Clarity:
Opaque
Content:
1 pc
Price:
$
84.20
Item in Stock
More Options & Item Details
ID:
501184
Weight:
5.98
Size:
12 mm (calibrated)
Clarity:
VVS
Content:
1 pc
Price:
$
55.26
Item in Stock
More Options & Item Details
ID:
464130
Weight:
6.01
Size:
12 mm (calibrated)
Clarity:
VVS-VS
Content:
1 pc
Price:
$
11.90
Item in Stock
More Options & Item Details
ID:
611706
Weight:
5.28
Size:
12 mm (calibrated)
Clarity:
VVS-VS
Content:
1 pc
Price:
$
20.90
Item in Stock
More Options & Item Details
ID:
675815
Weight:
6.91
Size:
12 mm (calibrated)
Clarity:
Opaque
Content:
2 pcs
Price:
$
19.66
Item in Stock
More Options & Item Details
ID:
360547
Weight:
7.63
Size:
12 mm (calibrated)
Clarity:
Transparent
Content:
1 pc
Price:
$
40.28
Item in Stock
More Options & Item Details
ID:
602442
Weight:
5.28
Size:
12 mm (calibrated)
Clarity:
VS
Content:
1 pc
Price:
$
25.64
Item in Stock
More Options & Item Details
ID:
671643
Weight:
5.58
Size:
12 mm (calibrated)
Clarity:
VVS-VS
Content:
1 pc
Price:
$
10.04
Item in Stock
More Options & Item Details
ID:
565642
Weight:
24.04
Size:
12 mm (calibrated)
Clarity:
Opaque
Content:
2 pcs
Price:
$
15.07
Item in Stock
More Options & Item Details
ID:
541485
Weight:
6.33
Size:
12 mm (calibrated)
Clarity:
Opaque
Content:
1 pc
Price:
$
90.46
Item in Stock
More Options & Item Details
ID:
548394
Weight:
13.21
Size:
12 mm (calibrated)
Clarity:
Opaque
Content:
2 pcs
Price:
$
49.52
Item in Stock
More Options & Item Details
ID:
737550
Weight:
10.95
Size:
12 mm (calibrated)
Clarity:
Opaque
Content:
1 pc
Price:
$
65.70
Item in Stock
More Options & Item Details
ID:
378273
Weight:
13.48
Size:
12 mm (calibrated)
Clarity:
Opaque
Content:
2 pcs
Price:
$
53.38
Item in Stock
More Options & Item Details
ID:
438491
Weight:
14.86
Size:
12 mm (calibrated)
Clarity:
Opaque
Content:
2 pcs
Price:
$
58.85
Item in Stock
More Options & Item Details
ID:
361823
Weight:
26.18
Size:
12 mm (calibrated)
Clarity:
Opaque
Content:
2 pcs
Price:
$
34.56
Item in Stock
More Options & Item Details
ID:
384555
Weight:
13.47
Size:
12 mm (calibrated)
Clarity:
Opaque
Content:
2 pcs
Price:
$
53.34
Item in Stock
More Options & Item Details
ID:
417689
Weight:
10.43
Size:
12 mm (calibrated)
Clarity:
VVS-VS
Content:
2 pcs
Price:
$
27.54
Item in Stock
More Options & Item Details
ID:
601899
Weight:
5.16
Size:
12 mm (calibrated)
Clarity:
VVS
Price:
$
25.07
Item in Stock
More Options & Item Details
ID:
361826
Weight:
23.84
Size:
12 mm (calibrated)
Clarity:
Opaque
Content:
2 pcs
Price:
$
31.46
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
the gems were smaller than I thought but I was at fault for not reading the complete discrimination
Posted By Tim in May, 2025
Source: Bizrate
Overall Rating -> 10
All items were delivered on time with all items meeting or exceeding my expectations. Cut, clarity and color were very close to the photos and description.
Posted By Bob D in December, 2025
Source: Bizrate
Overall Rating -> 10
this site is awesome. I was able to look at the products think about purchasing and come back and find the same products. With the amount of inventory gem select has. Its awesome to be able to filter the way that they allow you too.
Posted By Tommyp in November, 2025
Source: Bizrate
Overall Rating -> 10
I have shopped at Gemselect for nearly 20 years. I especially like that you see pictures of the exact gem you are purchasing. You are a trusted source.
Posted By DNaber in October, 2025
Source: Bizrate
Overall Rating -> 10
Very good place to buy gemstones
Posted By Elansary in March, 2026
Source: Bizrate
Overall Rating -> 9
Very good and simple exchange
Posted By Waylon in March, 2026
Source: Bizrate
