Buy Big 16 Carat Natural Gemstones
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Gemtypes in Category:
Agate (26)
Amazonite (4)
Amethyst (31)
Amethyst Geode Slice (3)
Ametrine (3)
Ammolite (40)
Black Opal (1)
Bloodstone (3)
Boulder Opal (11)
Chalcedony (4)
Charoite (2)
Cinnabar (3)
Coral (2)
Dendritic Agate (1)
Druzy Azurite (2)
Druzy Citrine (1)
Druzy Variscite (8)
Fossil Coral (2)
Hematite (6)
Howlite (6)
Jadeite (8)
Jasper (29)
Kunzite (1)
Labradorite (9)
Lapis Lazuli (3)
Larimar (6)
Malachite (1)
Maw-Sit-Sit (3)
Moonstone (2)
Mother of Pearl (6)
Nuummite (4)
Obsidian (3)
Onyx (1)
Opal (3)
Pietersite (4)
Prehnite (2)
Pyrope Garnet (2)
Quartz (14)
Quartz With Marcasite (7)
Rainbow Moonstone (16)
Rainbow Pyrite (5)
Rose Quartz (10)
Ruby (5)
Ruby-Zoisite (14)
Rutile Quartz (2)
Serpentine (1)
Smoky Quartz (1)
Spectrolite (1)
Spessartite Garnet (1)
Star Garnet (2)
Star Ruby (3)
Star Sapphire (2)
Tiger's Eye (4)
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Topaz (14)
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16.73ct Red Pyrope Garnet, Cushion, IF
16.8 x 12.3 mm
$
486.01
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16.33ct Multicolor Labradorite, Pear Shape, Translucent
20 x 15 mm (calibrated)
$
36.11
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16.66ct White Rainbow Moonstone, Pear Shape, Transparent
20 x 20 mm (calibrated)
$
132.75
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16.75ct White Agate, Round, Opaque
17 mm (calibrated)
$
26.53
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16.38ct Blue Larimar, Cushion, Opaque
23.9 x 22.6 mm
$
197.41
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16.40ct Multicolor Quartz With Marcasite, Oval, Transparent
21.8 x 13.7 mm
$
107.81
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16.19ct Yellow Quartz, Oval, Transparent
18 x 14.5 mm
$
19.02
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16.70ct Multicolor Ammolite, Fancy, Opaque
25.8 x 16.8 mm
$
332.66
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16.21ct Multicolor Agate, Oval, Opaque
19.4 x 12.9 mm
$
16.14
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16.04ct Pink Rose Quartz, Oval, Transparent/Translucent
17 x 13.9 mm
$
22.85
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16.83ct Multicolor Boulder Opal, Fancy, Opaque
23.2 x 16 mm
$
83.81
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16.55ct Multicolor Ammolite, Fancy, Opaque
22 x 14.3 mm
$
329.68
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16.23ct Multicolor Ammolite, Fancy, Opaque
28.4 x 13.4 mm
$
177.82
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16.34ct Violet Amethyst, Flower Cut, Translucent
15.4 x 11.5 mm
$
53.70
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16.03ct Multicolor Rainbow Pyrite, Cushion, Opaque
20 x 15 mm (calibrated)
$
41.35
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16.71ct Yellow Star Sapphire, Oval, Opaque
15.7 x 12.6 mm
$
164.77
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16.36ct Violet Amethyst, Oval, VVS-VS
18.3 x 15.3 mm
$
130.36
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16.97ct Blue Topaz, Cushion, VVS-VS
18 x 11.5 mm
$
135.22
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16.43ct Green Maw-Sit-Sit, Oval, Opaque
15.2 x 12.8 mm
$
36.01
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16.79ct Blue Topaz, Fancy, Transparent
23.5 x 12.5 mm
$
91.98
View Gem
16.87ct Blue Larimar, Pear Shape, Opaque
21 x 14.3 mm
$
201.63
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16.47ct Multicolor Fossil Coral, Cushion, Opaque
20.6 x 14.2 mm
$
35.72
View Gem
16.83ct Multicolor Labradorite, Pear Shape, Transparent/Translucent
20 x 15 mm (calibrated)
$
37.21
View Gem
16.62ct Multicolor Opal, Pear Shape, Opaque
17.7 x 15.3 mm
$
413.84
View Gem
Why Buy 16 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 -> 10
Wonderful purchase, can't wait to see the stone.
Posted By Tim in January, 2026
Source: Bizrate
Overall Rating -> 10
My experience has always been fantastic. Today I saved 6 gems to email a customer looking for a particular color blend to fit into an east west setting, so her options were limited, but we found one she wanted, deleted all the others in the cart and order the gem she selected. It was helpful to be able to put them in the cart so I could save them until she selected the one she wanted without having to research all of them again.
Posted By RJ in January, 2026
Source: Bizrate
Overall Rating -> 10
Very good.
Posted By Tommy in December, 2025
Source: Bizrate
Overall Rating -> 10
Great site for finding specific stones and sizes for individual pieces of jewelry
Posted By Designer in December, 2025
Source: Bizrate
Overall Rating -> 10
Good selection, using for custom jewlery for my wife.
Posted By Smitty in June, 2025
Source: Bizrate
Overall Rating -> 10
I feel Gemselect is a trustworthy company to buy from
Posted By Becky in October, 2025
Source: Bizrate