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  • / Gemstones
  • / Stone Size: 18x13mm

Gemstones

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
18x13mm Natural Oval Cabochon Cut South Dakota Rose Quartz
10x8 to 20x15mm South Dakota Rose Quartz Oval Cabs
From $25.50
18x13mm Oval Cabochon Cut Nevada Monet Stone
12x10 to 20x15mm Nevada Monet Stone Oval Cabs
From $15.00
16x12mm Oval Cabochon Cut Lemon Chrysoprase
16x12 to 30x22mm Lemon Chrysoprase Oval Cabs
From $54.00
20x15mm Oval Cabochon Cut Oregon Starry Night Feldspar
14x12 to 20x15mm Oregon Starry Night Feldspar Oval Cabs
From $15.00
18x13mm Oval Cabochon Cut Oregon Willow Creek Jasper
18x13mm Oregon Willow Creek Jasper Oval Cabs
$60.00
8x6mm Natural Oval Arizona Amethyst
14x10 to 18x13mm Arizona Amethyst Ovals
From $261.00
18x13mm Checkerboard Lozenge Cut Arkansas White Quartz
18x13mm Arkansas Clear Quartz Checkerboard Lozenge Cuts
$171.00
7x5mm Natural Oval Heliodor
5x3 to 18x13mm Heliodor Ovals
From $45.00
16x12mm Oval Natural Brazilian Lilac Quartz
11x9 to 18x13mm Brazilian Lavender Quartz Ovals
From $102.00
8x6mm Oval A Iris Amethyst®
5x3 to 18x13mm A Iris Amethyst® Ovals
From $18.75
10x8mm to 18x13mm Oval Cabochon Cut Gem Blue Mexican Chalcedony
10x8 to 18x13mm Gem Blue Mexican Chalcedony Oval Cabs
From $69.00
12x10mm Oval Cabochon Cut Leopard Opal
8x6 to 20x15mm Leopard Opal Oval Cabs
From $75.00
6x4mm to 18x13mm Oval Cabochon Cut Purple Sage Chalcedony (Smoky Purple)
6x4 to 18x13mm Purple Sage Chalcedony Oval Cabs - Smoky Purple
From $7.50
6x4mm to 18x13mm Oval Cabochon Cut Purple Sage Chalcedony (Medium Purple)
6x4 to 18x13mm Purple Sage Chalcedony Oval Cabs - Medium Purple
From $12.00
6x4mm to 18x13mm Oval Cabochon Cut Purple Sage Chalcedony (Dark Purple)
6x4 to 18x13mm Purple Sage Chalcedony Oval Cabs - Dark Purple
From $21.00
16x12mm Oval Cabochon Cut Amelia Teal Amazonite™
6x4 to 18x13mm Amelia Teal Amazonite™ Oval Cabs
From $16.20

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