Skip to content
Submit
Get on the list
Account
Search
Close
Search
Loading...
Cart
Submit
Get on the list
Home
Gemstones
Faceted
Cabochons
Melee
Slices
Crystals
Pairs and Suites
Carvings
Parcels and Lots
Featured
American Gems
Montana Sapphires
Objet D' Art
Jewelry
Rings
Earrings
Necklaces
Pendants
Bracelets
Suites
Collections
Ready to Ship
Programs
Pearls
Cortez Pearls
Loose
Learn More About Cortez Pearls
Cultured Pearls
Loose
Beads
Beads
Services
Cutting
Consulting
Speaking Engagements
Wholesale Accounts
Fair Trade Gems
Principles
Protocols
Get Involved
Resources
Fair Trade Blog
Gem Education
Gem Facts
Travel the World of Gems
Gemstone Spotlight
Gemstone Glossary
How Gemstones are Cut
Gem Care & Cleaning
Jewelry Education
Step by Step
Designer Profile
Settings Glossary
Care and Cleaning
About Us
Account
Home
/
Gemstones
/
Stone Size: 18x13mm
Gemstones
Filter
Sort by
Sort by
Featured
Best Selling
Title, A-Z
Title, Z-A
Price, low to high
Price, high to low
Date, new to old
Date, old to new
✖
Filter
Stone Size: 18x13mm
remove
Gem Type
Amazonite
Amethyst
Beryl
Chalcedony
Diopside
Feldspar
Jasper
Marble
Opal
Quartz
Variety
Amelia Teal Amazonite
Arizona Amethyst
Blue Chalcedony
Clear Quartz
Heliodor
Iris Amethyst
Lemon Chryoprase
Leopard Opal
Monet Stone
Purple Sage Chalcedony
Quartz
Rose Quartz
Rutilated Quartz
Starry Night Feldspar
Tashmarine
Willow Creek Jasper
Zebra Marble
Shape
Cathedral
Lozenge
Oval
Sub Shape
Cabochon
Checkerboard
Concave
Portuguese
Fair Trade Level
1
2
3
4
Origin
Brazil
China
Mexico
Uruguay
USA
Location
Arizona
Arkansas
Nevada
Oregon
South Dakota
Utah
Virginia
Xinjiang
Color
Black
Blue
Brown
Colorless
Green
Grey
Lavender
Multi
Pastel
Pink
Play of Color
Purple
Teal
White
Yellow
Treatment
Irradiated
Not Treated
Gem Cut
Cabochon
Faceted
Stone Size
18x13mm
remove
Total Gem Weight
0.0 to 0.25 carat
0.25 to 0.50 carat
0.50 to 0.75 carat
0.75 to 1.0 carat
1.0 to 1.50 carats
1.50 to 2.0 carats
10.0+ carats
2.0 to 3.0 carats
3.0 to 5.0 carats
5.0 to 10.0 carats
Varies By Stone
12x10 to 20x15mm Rutilated Quartz Oval Cabs - Light Rutile
From
$30.00
12x10 to 20x15mm Rutilated Quartz Oval Cabs - Heavy Rutile
From
$60.00
16x12 to 25x18mm Utah Zebra Marble Oval Cabs
From
$24.00
14.21ct Tashmarine Concave Cathedral
$5,684.00
10x8 to 20x15mm South Dakota Rose Quartz Oval Cabs
From
$25.50
12x10 to 20x15mm Nevada Monet Stone Oval Cabs
From
$15.00
16x12 to 30x22mm Lemon Chrysoprase Oval Cabs
From
$54.00
14x12 to 20x15mm Oregon Starry Night Feldspar Oval Cabs
From
$15.00
18x13mm Oregon Willow Creek Jasper Oval Cabs
$60.00
14x10 to 18x13mm Arizona Amethyst Ovals
From
$261.00
18x13mm Arkansas Clear Quartz Checkerboard Lozenge Cuts
$171.00
5x3 to 18x13mm Heliodor Ovals
From
$45.00
11x9 to 18x13mm Brazilian Lavender Quartz Ovals
From
$102.00
5x3 to 18x13mm A Iris Amethyst® Ovals
From
$18.75
10x8 to 18x13mm Gem Blue Mexican Chalcedony Oval Cabs
From
$69.00
8x6 to 20x15mm Leopard Opal Oval Cabs
From
$75.00
6x4 to 18x13mm Purple Sage Chalcedony Oval Cabs - Smoky Purple
From
$7.50
6x4 to 18x13mm Purple Sage Chalcedony Oval Cabs - Medium Purple
From
$12.00
6x4 to 18x13mm Purple Sage Chalcedony Oval Cabs - Dark Purple
From
$21.00
6x4 to 18x13mm Amelia Teal Amazonite™ Oval Cabs
From
$16.20