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Buy 13 Carat Gems

(931)
Gem Type Weight Size Clarity Price Origin
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Golden Brown Star Moonstone Gem - 12.6ct Oval Cabochon (ID: 418365)

Oval Brown Star Moonstone

12.6ct
14.7 x 12.1 mm
$ 50.28
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2 pcs
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Multicolor Fossil Coral Gem - 12.6ct Fancy Cabochon (ID: 510922)

Fancy Multicolor Fossil Coral

12.58 ct (total 25.15ctw)
23.6 x 11.1 mm
$ 40.99
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Medium-Light Green Maw-Sit-Sit Gem - 13.1ct Oval Cabochon (ID: 407547)

Oval Green Maw-Sit-Sit

13.1ct
15.8 x 12.8 mm
$ 26.28
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Light Pink Rose Quartz Gem - 13.3ct Round Petal Cut (ID: 414286)

Round Pink Rose Quartz

13.3ct
14.6 mm
$ 66.65
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2 pcs
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Multicolor Pietersite Gem - 13.2ct Oval Cabochon (ID: 447949)

Oval Multicolor Pietersite

13.20 ct (total 26.40ctw)
20.1 x 15.1 mm
$ 79.20
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Light Yellow Star Moonstone Gem - 12.5ct Oval Cabochon (ID: 484388)

Oval Yellow Star Moonstone

12.5ct
15.3 x 13.2 mm
$ 50.04
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2 pcs
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Boysenberry Purple Ruby Gem - 13.6ct Carved Fancy (ID: 501426)

Fancy Purple Ruby

13.56 ct (total 27.12ctw)
26.6 x 16.3 mm
$ 575.22
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Dark Grey Pearl Gem - 13ct Spherical (ID: 338171)

Sphere / Ball Gray Pearl

13ct
12.1 mm
$ 129.70
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Multicolor Fossil Coral Gem - 13.7ct Pear Cabochon (ID: 514379)

Pear Multicolor Fossil Coral

13.7ct
22.3 x 14.9 mm
$ 27.21
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Dark Blue Color-Change Fluorite Gem - 13.4ct Round Facet (ID: 414402)

Round Blue Color-Change Fluorite

13.4ct
15 mm
$ 267.40
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Pale Green Cat's Eye Aquamarine Gem - 12.6ct Oval Cabochon (ID: 380255)

Oval Green Cat's Eye Aquamarine

12.6ct
16.5 x 13.2 mm
$ 203.97
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Forest Green Bloodstone Gem - 13.3ct Oval Cabochon (ID: 408407)

Oval Green Bloodstone

13.3ct
15.9 x 13.4 mm
$ 46.66
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2 pcs
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Medium Gold Citrine Gem - 13.8ct Carved Flower (ID: 471456)

Flower Cut Golden Citrine

13.81 ct (total 27.61ctw)
15.2 x 15 mm
$ 193.27
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Purplish Blue Chalcedony Gem - 12.7ct Cushion Buff-Top (ID: 531575)

Cushion Blue Chalcedony

12.7ct
15.1 x 15.1 mm
$ 9.66
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Multicolor Fossil Coral Gem - 13.9ct Cushion Cabochon (ID: 475095)

Cushion Multicolor Fossil Coral

13.86 ct (total 27.72ctw)
18.7 x 12.1 mm
$ 49.90
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Multicolor Boulder Opal Gem - 13.6ct Fancy Cabochon (ID: 522963)

Fancy Multicolor Boulder Opal

13.6ct
34.3 x 9.2 mm
$ 67.95
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Medium Grey Star Sapphire Gem - 13.5ct Oval Cabochon (ID: 470809)

Oval Gray Star Sapphire

13.5ct
13.7 x 11.6 mm
$ 471.10
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Rose Pink Strawberry Quartz Gem - 12.9ct Pear Facet (ID: 473005)

Pear Pink Strawberry Quartz

12.9ct
18.9 x 13.2 mm
$ 87.59
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Medium Brown Smoky Quartz Gem - 13.9ct Cushion Checkerboard (double sided) (ID: 416795)

Cushion Brown Smoky Quartz

13.9ct
16.1 x 16 mm
$ 20.91
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Blue-Green Silver  Pearl Gem - 13ct Spherical (ID: 338212)

Sphere / Ball Gray Pearl

13ct
12.3 mm
$ 195.60
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Light Blue Aquamarine Gem - 13.5ct Octagon / Scissor Cut (ID: 450374)

Octagon / Emerald Cut Blue Aquamarine

13.5ct
19.3 x 9.7 mm
$ 3,385.00
Item in Stock
13 Carat Gems
Buy gems by weight. Shop from our extensive range of beautiful, natural 13 carat gems. Browse the largest selection of natural loose colored gemstones available in 13 carats. Our large gemstone selection includes many popular gem types, such as amethyst, citrine, topaz and turquoise, and lesser-known gems, including rhodochrosite, 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 'tourmaline' to see all of our 13-carat tourmaline gems. Select 'multicolor' to shop for 13-carat multicolor 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
GemSelect has a wonderful well described selection that surprises me how quickly it ships.
Posted By Tim in December, 2019
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Overall Rating -> 10 star ratings
They have the best selection of different gems and the prices and fantastic
Posted By Brandi in December, 2019
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Overall Rating -> 9 star ratings
Very clear site. The photos and video make sure you know exactly what you are getting. I also appreciate all of the additional info. and definitions/explanations offered
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Overall Rating -> 10 star ratings
Working on a special anniversary gem collection for my wife, and was able to find almost everything on this one site. Having bought from yall before, this was a no-brainer on where to go for the right stones/buying experience.
Posted By ESP in December, 2019
Source: Bizrate
Overall Rating -> 10 star ratings
Great products and very customer friendly. Will be purchasing again. Thanks!
Posted By Joe in December, 2019
Source: Bizrate
Overall Rating -> 9 star ratings
You have a much wider variety of stones than other dealers. I come back for this reason: lots and lots of everything.
Posted By G in December, 2019
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More Shapes
  • Asscher Cut
  • Baguette / Scissor Cut
  • Baguette Cabochon
  • Baguette Checkerboard
  • Baguette Crystal Cluster
  • Baguette Facet
  • Baguette Rose-Cut
  • Baguette Step Cut
  • Baguette Sugarloaf Cabochon
  • Baroque
  • Barrel
  • Barrel / Checkerboard
  • Barrel / Full-Round
  • Barrel / Scissor Cut
  • Barrel Cabochon
  • Barrel Rose Cut
  • Bear Carving with Hole
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  • Carved Baguette
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  • Carved Fancy
  • Carved Fish
  • Carved Fish with Hole
  • Carved Flower
  • Carved Fruit
  • Carved Half Heart
  • Carved Half Moon
  • Carved Heart
  • Carved Heart Cabochon
  • Carved Leaf
  • Carved Marquise
  • Carved Marquise Cabochon
  • Carved Octagon
  • Carved Oval
  • Carved Oval Cabochon
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  • Carved Pear
  • Carved Pear Cabochon
  • Carved Rhomb
  • Carved Rose
  • Carved Rose with Half Drilled Hole
  • Carved Round
  • Carved Round Cabochon
  • Carved Sheep
  • Carved Shell
  • Carved Square
  • Carved Teardrop
  • Carved Trillion
  • Carved Turtle
  • Cushion Buff-Top
  • Cushion Cabochon
  • Cushion Carved Medusa Cameo
  • Cushion Checkerboard
  • Cushion Checkerboard (double sided)
  • Cushion Concave Fantasy Cut
  • Cushion Crystal Cluster
  • Cushion Mixed Cut
  • Cushion Rose-Cut
  • Cushion Shape Sugarloaf Cabochon
  • Cushion Sugarloaf Cabochon
  • Cushion-Cut
  • Diamond-Cut
  • Drilled Faceted Sphere
  • Drilled Sphere
  • Drilled Square Rondelle Slice
  • Drop / Pear
  • Fancy Cabochon
  • Fancy Carved Cushion
  • Fancy Carved Oval
  • Fancy Carved Pear
  • Fancy Carved Round
  • Fancy Carved Trillion
  • Fancy Carving
  • Fancy Crystal Cluster
  • Fancy Facet
  • Fancy Fantasy Carved Leaf
  • Fancy Fantasy Carving
  • Fancy Slice
  • Fancy Star Facet
  • Fancy-Cut
  • Fantasy Carved Flower
  • Fantasy Carved Flower Cut
  • Fantasy Carved Leaf
  • Flower Carving
  • Flower-Cut
  • Half Heart Cabochon
  • Half Heart Facet
  • Half Moon Cabochon
  • Half Moon Facet-Cut
  • Half Moon Faceted
  • Half-Drilled Briolette
  • Half-Drilled Heart Checkerboard Facet
  • Half-Drilled Sphere
  • Heart Cabochon
  • Heart Checkerboard (double sided)
  • Heart Facet
  • Heart Rose-Cut
  • Hexagon Cut
  • Marquise Buff-Top
  • Marquise Cabochon
  • Marquise Checkerboard
  • Marquise Checkerboard (double sided)
  • Marquise Facet
  • Marquise Mixed Cut
  • Marquise Slice
  • Marquise Sugarloaf Cabochon
  • Octagon / Scissor Cut
  • Octagon Cabochon
  • Octagon Checkerboard
  • Octagon Facet
  • Octagon Step Cut
  • Oval Buff-Top
  • Oval Cabochon
  • Oval Cabochon with Hole
  • Oval Carved Cameo
  • Oval Checkerboard
  • Oval Checkerboard (double sided)
  • Oval Concave Cut
  • Oval Crystal Cluster
  • Oval Diamond-Cut
  • Oval Facet
  • Oval Fancy Facet
  • Oval Fantasy Concave Cut
  • Oval Mixed Cut
  • Oval Portuguese-Cut
  • Oval Rose-Cut
  • Oval Slice
  • Pear Cabochon
  • Pear Checkerboard
  • Pear Checkerboard with Hole
  • Pear Concave Cut
  • Pear Concave Fantasy Cut
  • Pear Crystal Cluster
  • Pear Double-Sided Checkerboard
  • Pear Facet
  • Pear Shape Sugarloaf Cabochon
  • Pear Slice
  • Pencil
  • Pencil Cut
  • Pentagon Facet
  • Princess-Cut
  • Rhomb Cabochon
  • Rhomb Checkerboard
  • Rhomb Checkerboard (Double-Sided)
  • Rhomb Facet
  • Rondelle
  • Round Buff-Top
  • Round Cabochon
  • Round Carved Cameo
  • Round Checkerboard
  • Round Checkerboard (double sided)
  • Round Concave Cut
  • Round Concave Fantasy Cut
  • Round Drilled Checkerboard (Double Sided)
  • Round Drilled Rondelle
  • Round Facet
  • Round Mixed Cut
  • Round Mixed-Cut
  • Round Petal Cut
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  • Shark Fin Cabochon
  • Shield Cabochon
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  • Spherical
  • Square / Scissor Cut
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  • Square Rose-Cut
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  • Square with Hole
  • Tapered Baguette
  • Tapered Baguette Cabochon
  • Teardrop Cabochon
  • Trapezoid
  • Trapezoid Cabochon
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  • Triangle Cabochon
  • Trillion Cabochon
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  • Trillion Concave Cut
  • Trillion Concave Fantasy Cut
  • Trillion Crystal Cluster
  • Trillion Facet
  • Trillion Rose-Cut
  • Trillion Shape Sugarloaf Cabochon
  • Undrilled Briolette Teardrop
Popular Gemstones
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  • Tanzanite
All Gemstones (144)
A B C D E F G H I J K L M N O P Q R S T V Z
  • Actinolite Cat's Eye
  • Agate
  • Agate Geode
  • Almandine Garnet
  • Amazonite
  • Amethyst
  • Ametrine
  • Ammolite
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  • Apatite
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  • Aventurine
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  • Black Opal
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  • Demantoid Garnet
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  • Enstatite
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  • Fire Opal
  • Fluorite
  • Fossil Coral
  • Garnet
  • Golden Beryl
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  • Grossularite Garnet
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  • Hiddenite
  • Howlite
  • Idocrase
  • Imperial Topaz
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  • Moonstone
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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