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Buy 20 Carat Gems

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Gemtype Color Shape Weight Size Clarity Price Origin
You Selected (516): 20 Carat Gems Clear All
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Pink Rose Quartz Gem - 20.2ct Briolette with Hole (ID: 364896)

Briolette Pink Rose Quartz

20.2ct
20.4 x 13.3 mm
$ 40.86
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1 pc
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Yellow Golden Citrine Gem - 20.5ct Oval Facet (ID: 397367)

Oval Yellow Citrine

20.5ct
21.4 x 15.1 mm
$ 143.78
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Multicolor Jasper Gem - 21ct Oval Cabochon (ID: 363302)

Oval Multicolor Jasper

21ct
25.2 x 18.1 mm
$ 41.90
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Green Serpentine Gem - 20.9ct Oval Cabochon (ID: 396297)

Oval Green Serpentine

20.9ct
22.8 x 18.4 mm
$ 37.67
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Green Prehnite Gem - 21ct Carved Fruit (ID: 469491)

Fancy Green Prehnite

21ct
25 x 12.7 mm
$ 33.12
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Green Maw-Sit-Sit Gem - 20ct Square Sugarloaf Cabochon (ID: 476985)

Square Green Maw-Sit-Sit

20ct
15.2 x 14.6 mm
$ 59.94
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Swiss Blue Topaz Gem - 20.9ct Trillion Concave Fantasy Cut (ID: 486089)

Trillion Blue Topaz

20.9ct
22.8 x 15.6 mm
$ 125.40
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Multicolor Sugilite Gem - 20.4ct Trillion Cabochon (ID: 497860)

Trillion Multicolor Sugilite

20.4ct
24.7 x 17.9 mm
$ 50.93
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Multicolor Ammolite Gem - 21ct Shark Fin Cabochon (ID: 494352)

Fancy Multicolor Ammolite

21ct
31 x 13.9 mm
$ 314.85
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Green to Pink Color-Change Diaspore Gem - 19.9ct Round Facet (ID: 381559)

Round Multicolor Color-Change Diaspore

19.9ct
15.4 mm
$ 6,500.92
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Multicolor Tiger's Eye Matrix Gem - 20.2ct Drilled Sphere (ID: 422977)

Sphere / Ball Multicolor Tiger's Eye Matrix

20.23 ct (total 40.46ctw)
14.1 mm
$ 32.37
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Multicolor Ammolite Gem - 20.4ct Shark Fin Cabochon (ID: 494368)

Fancy Multicolor Ammolite

20.4ct
25.9 x 21.1 mm
$ 306.60
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Golden Apatite Gem - 20.4ct Octagon Facet (ID: 384010)

Octagon / Emerald Cut Yellow Apatite

20.4ct
17.5 x 13.2 mm
$ 612.90
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Yellow Citrine Gem - 20.8ct Round Facet (ID: 329003)

Round Yellow Citrine

20.8ct
18.1 mm
$ 141.71
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Violet to Blue Color-Change Fluorite Gem - 20.9ct Oval Facet (ID: 445416)

Oval Multicolor Color-Change Fluorite

20.9ct
20.2 x 15.2 mm
$ 525.18
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Multicolor Mother of Pearl Gem - 20.1ct Carved Leaf (ID: 501450)

Fancy Multicolor Mother of Pearl

20.1ct
44.8 x 32.9 mm
$ 62.74
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Swiss Blue Topaz Gem - 19.2ct Fancy Facet (ID: 409759)

Fancy Blue Topaz

19.2ct
20.6 x 15.5 mm
$ 134.61
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Black Star Sapphire Gem - 20.3ct Oval Cabochon (ID: 350892)

Oval Black Star Sapphire

20.3ct
19.2 x 15.9 mm
$ 553.92
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Multicolor Sugilite Gem - 19.4ct Shark Fin Cabochon (ID: 472361)

Fancy Multicolor Sugilite

19.4ct
24.8 x 16.3 mm
$ 38.88
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Pink Rose Quartz Gem - 20.1ct Oval Cabochon (ID: 344833)

Oval Pink Rose Quartz

20.1ct
20.2 x 16.6 mm
$ 27.07
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Green Aventurine Gem - 20.6ct Pear Cabochon (ID: 486852)

Pear Green Aventurine

20.6ct
24.2 x 16.5 mm
$ 10.31
Item in Stock
20 Carat Gems
Buy gems by carat weight. Shop from our extensive range of beautiful, natural 20 carat gems. Browse the largest selection of natural loose colored gemstones available in 20 carats. Our wide gemstone selection includes many popular gem types, such as amethyst, citrine, rose quartz and turquoise, and lesser-known gems, including ruby-zoisite, ammolite and maw-sit-sit. From here, you can use our filters at the top or on the left-hand side to find gems by gem type, color, shape, cut and so on. For example, select 'tiger's eye' to see all of our 20-carat tiger's eye gems. Select 'violet' to shop for 20-carat purple gems. You can also filter by single, pairs, lots, faceted gems or cabochons by using the check boxes at the top.
Certified Customer Reviews
Overall Rating -> 10 star ratings
man their gems are pretty good, and the prices aren't to bad either, I like checking out hte gems on there website, beceause the pictures of the gems are taken pretty well, and you can see the table, and the facets.
Posted By Spinach in March, 2019
Source: Bizrate
Overall Rating -> 10 star ratings
I love gemselect and I have bought a fair amount from them. The only complaint I have is not being able to save gems. I have a lot of projects so i am in the market for a lot of different gems and it's so disappointing to have to delete them all just to purchase one or two that I have saved in my cart.
Posted By S.Hicks in March, 2019
Source: Bizrate
Overall Rating -> 10 star ratings
I always check this site because they have unique options.
Posted By Lisa in February, 2019
Source: Bizrate
Overall Rating -> 10 star ratings
Great website to navigate. Awesome Gem selection! Nice photos and discriptions for all of the gems for sale. You can find gems in all price ranges. Checkout was a breeze.
Posted By Timmy in February, 2019
Source: Bizrate
Overall Rating -> 10 star ratings
They had an extensive gemstone selection in all different cuts, sizes, and colors. They also had very good and workable prices. All of these aspects pulled me in as a customer.
Posted By Josh in February, 2019
Source: Bizrate
Overall Rating -> 9 star ratings
It all depend on the product I will receive and have it verified by my in law jewellers.
Posted By Vodka in February, 2019
Source: Bizrate
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Size and Weight

Gems are always measured in Millimeter (mm)

Dimensions are given as;
length x width x depth,
except for round stones which are;
diameter x depth

Select gems by size, not by weight!
Gem varieties vary in density, so carat weight is not a good indication of size

Note: 1ct = 0.2g

Size Comparison Chart