Buy Big 15 Carat Natural Gemstones
Bi-color 15 ct Gemstones
Black 15 ct Gemstones
Blue 15 ct Gemstones
Brown 15 ct Gemstones
Golden
Gray 15 ct Gemstones
Green 15 ct Gemstones
Multicolor 15 ct Gemstones
Orange 15 ct Gemstones
Pink 15 ct Gemstones
Purple 15 ct Gemstones
Red 15 ct Gemstones
Turquoise 15 ct Gemstones
Violet 15 ct Gemstones
White 15 ct Gemstones
Yellow 15 ct Gemstones
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 (34)
Agate Geode (4)
Amazonite (6)
Amethyst (39)
Amethyst Geode Slice (2)
Ametrine (3)
Ammolite (61)
Apatite (4)
Aquamarine (1)
Aventurine (2)
Black Opal (2)
Bloodstone (11)
Boulder Opal (9)
Calcite (1)
Cat's Eye Aquamarine (1)
Chalcedony (4)
Charoite (5)
Chrysocolla (2)
Cinnabar (10)
Citrine (2)
Color-Change Fluorite (3)
Coral (13)
Dendritic Agate (3)
Druzy Citrine (2)
Druzy Variscite (1)
Fire Agate (1)
Fire Opal (1)
Fluorite (3)
Fossil Coral (49)
Grandidierite (1)
Hematite (5)
Howlite (20)
Jadeite (8)
Jasper (47)
Kunzite (4)
Labradorite (12)
Lapis Lazuli (7)
Larimar (11)
Malachite (3)
Maw-Sit-Sit (8)
Moonstone (4)
Moss Agate (2)
Mother of Pearl (12)
Nuummite (9)
Obsidian (4)
Onyx (1)
Opal (13)
Peanut Wood (1)
Pietersite (14)
Prehnite (7)
Psilomelane Dendrite (1)
Pyrope Garnet (1)
Quartz (49)
Quartz With Marcasite (4)
Rainbow Moonstone (27)
Rainbow Pyrite (5)
Rhodochrosite (3)
Rose Quartz (13)
Ruby (18)
Ruby-Zoisite (17)
Rutile Quartz (5)
Serpentine (5)
Smoky Quartz (7)
Spessartite Garnet (1)
Spinel (2)
Star Garnet (4)
Star Ruby (13)
Star Sapphire (1)
Star Sunstone (2)
Strawberry Quartz (4)
Tiger's Eye (10)
Tiger's Eye Matrix (3)
Topaz (28)
Tourmaline (15)
Tsavorite Garnet (1)
Uvarovite Garnet Drusy (3)
Clear All
15.04ct Multicolor Agate, Sphere / Ball, Opaque
12 mm (calibrated)
$
11.99
View Gem
15.54ct Brown Moonstone, Oval, Opaque
20.3 x 14.3 mm
$
34.05
View Gem
15.38ct White Rainbow Moonstone, Pear Shape, Translucent
21.8 x 14.1 mm
$
107.23
View Gem
15.88ct Bi-Color Ametrine, Oval, VS
17.4 x 14.2 mm
$
104.39
View Gem
15.68ct Brown Spessartite Garnet, Flower Cut, Translucent
14 x 14 mm (calibrated)
$
14.43
View Gem
15.55ct Violet Amethyst, Emerald Cut, VVS-VS
18 x 13 mm (calibrated)
$
108.41
View Gem
15.77ct Multicolor Ammolite, Fancy, Opaque
27.9 x 13.1 mm
$
345.55
View Gem
15.56ct Multicolor Jasper, Baguette, Opaque
16.6 x 12.8 mm
$
9.55
View Gem
15.81ct Green Bloodstone, Oval, Opaque
15.4 x 13.3 mm
$
32.31
View Gem
15.38ct Multicolor Ammolite, Fancy, Opaque
22.6 x 17.3 mm
$
306.37
View Gem
15.67ct Multicolor Ammolite, Trillion, Opaque
22.4 x 16.2 mm
$
171.68
View Gem
15.76ct White Rainbow Moonstone, Pear Shape, Transparent
22 x 13.7 mm
$
235.45
View Gem
15.19ct Multicolor Pietersite, Round, Opaque
18 mm (calibrated)
$
58.25
View Gem
15.27ct Multicolor Ammolite, Fancy, Opaque
22.2 x 17.8 mm
$
304.18
View Gem
15.20ct Red Ruby, Oval, Translucent
16.8 x 14.2 mm
$
399.68
View Gem
15.18ct Multicolor Boulder Opal, Fancy, Opaque
20.8 x 16.1 mm
$
75.60
View Gem
15.09ct Multicolor Pietersite, Round, Opaque
18 mm (calibrated)
$
57.87
View Gem
15.49ct Yellow Rutile Quartz, Pear Shape, Transparent
21.4 x 15.7 mm
$
52.78
View Gem
15.96ct Violet Amethyst, Emerald Cut, VVS
18 x 13 mm (calibrated)
$
111.27
View Gem
15.78ct Brown Tiger'S Eye, Pear Shape, Opaque
20 x 15 mm (calibrated)
$
15.72
View Gem
15.63ct White Rainbow Moonstone, Fancy, Transparent
21.2 x 13 mm
$
124.54
View Gem
15.79ct White Jadeite, Oval, Opaque
21.1 x 12.8 mm
$
51.90
View Gem
15.70ct Multicolor Agate, Round, Opaque
15 mm (calibrated)
$
14.86
View Gem
15.17ct Multicolor Jasper, Oval, Opaque
25 x 18 mm (calibrated)
$
33.23
View Gem
Why Buy 15 Ct Gemstones from GemSelect?
GemSelect Certified Store Reviews
GemSelect: 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
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 -> 9
If you have motion picture, then I will be more satisfied with.
Posted By Ray in November, 2025
Source: Bizrate
Overall Rating -> 8
The website was easy to use and there were a lot of good options, I was satisfied.
Posted By Brielly in January, 2026
Source: Bizrate
Overall Rating -> 8
It was fine
Posted By Na in April, 2026
Source: Bizrate
Overall Rating -> 10
Enjoy viewing the selections. Excellent product
Posted By ToRa.62 in April, 2026
Source: Bizrate