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Paperweight Cobalt

March 27th, 2011

Paperweight Cobalt




VINTAGE Cobalt Blue Art Glass Whale Figurine Modernist Paperweight 5 Long EXC
VINTAGE Cobalt Blue Art Glass Whale Figurine Modernist Paperweight 5 Long EXC
$9.99
Time Remaining: 25d 4h 47m
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Anemone Design Cobalt Blue Art Glass Paperweight Bubbles Controlled
Anemone Design Cobalt Blue Art Glass Paperweight Bubbles Controlled
$8.99
Time Remaining: 29d 23h 7m
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Vintage Beautiful Cobalt Blue Heart Paperweight
Vintage Beautiful Cobalt Blue Heart Paperweight
$19.99
Time Remaining: 3d 3h 5m

Mushroom Design Cobalt Blue Art Glass Paperweight with Controlled Bubbles
Mushroom Design Cobalt Blue Art Glass Paperweight with Controlled Bubbles
$10.99
Time Remaining: 29d 23h 9m
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Art Glass Whale Paperweight Cobalt Blue Rainbow Iridescent Figurine
Art Glass Whale Paperweight Cobalt Blue Rainbow Iridescent Figurine
$14.95
Time Remaining: 23d 1h 4m
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Vintage 2 GLASS Swan Cobalt Blue Paperweight
Vintage 2 GLASS Swan Cobalt Blue Paperweight
$10.00
Time Remaining: 24d 20m
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Vtg Masonic Freemason Emblem G Art Glass Paperweight Cobalt  Clear w Bubbles
Vtg Masonic Freemason Emblem G Art Glass Paperweight Cobalt Clear w Bubbles
$16.95
Time Remaining: 12d 2h 32m
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Tiffany  Co Elsa Peretti Cobalt Blue Art Glass Paperweight Heart Sculpture
Tiffany Co Elsa Peretti Cobalt Blue Art Glass Paperweight Heart Sculpture
$29.95
Time Remaining: 10d 23h 5m
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Vintage Cobalt Blue Controlled Bubbles Art Glass Paperweight Midnight Sky
Vintage Cobalt Blue Controlled Bubbles Art Glass Paperweight Midnight Sky
$39.99
Time Remaining: 18d 15h 44m
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2 Lundberg Art Glass Disc Paperweight studio Cobalt blue v1 stocking stuffer
2 Lundberg Art Glass Disc Paperweight studio Cobalt blue v1 stocking stuffer
$4.99
Time Remaining: 8h 55m

Glass sea shell paperweight fish tank art Cobalt Blue Center
Glass sea shell paperweight fish tank art Cobalt Blue Center
$3.88
Time Remaining: 18d 5h 13m
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Vintage Paperweight Bulls Eye and Cobalt Blue Buttons
Vintage Paperweight Bulls Eye and Cobalt Blue Buttons
$4.00
Time Remaining: 6d 21h 27m

CORREIA USA PAPERWEIGHT Cobalt Flower Design Signed 2009
CORREIA USA PAPERWEIGHT Cobalt Flower Design Signed 2009
$65.00
Time Remaining: 9d 4h 27m
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ART GLASS PAPERWEIGHT COBALT BLUE AND WHITE RIBBON BEVELED STEM TOP
ART GLASS PAPERWEIGHT COBALT BLUE AND WHITE RIBBON BEVELED STEM TOP
$19.99
Time Remaining: 6d 22h

STUNNING VINTAGE COBALT BLUE  GOLD EGG SHAPED PAPERWEIGHT 3 1 4
STUNNING VINTAGE COBALT BLUE GOLD EGG SHAPED PAPERWEIGHT 3 1 4
$19.99
Time Remaining: 5d 3h 27m

Fabulous Daniel Edler Cobalt Blue Art Glass Paperweight 1996
Fabulous Daniel Edler Cobalt Blue Art Glass Paperweight 1996
$76.51
Time Remaining: 19d 3h 36m
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LOVELY Small Art Glass COBALT BLUE WHITE CLEAR PAPERWEIGHT Controlled Bubbles
LOVELY Small Art Glass COBALT BLUE WHITE CLEAR PAPERWEIGHT Controlled Bubbles
$2.90
Time Remaining: 15h 9m

Gary Zack Studio Art Glass Paperweight Cobalt Blue Gold White Pink Swirl
Gary Zack Studio Art Glass Paperweight Cobalt Blue Gold White Pink Swirl
$34.00
Time Remaining: 5d 7h 10m
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Freeform Art Glass Paperweight Cobalt Blue ribbons w Iridescent streaks Sea Life
Freeform Art Glass Paperweight Cobalt Blue ribbons w Iridescent streaks Sea Life
$5.00
Time Remaining: 18d 16h 34m
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Cobalt Blue Flower 5 Crystal Glass Diamond Floral Paperweight Asian Theme Mint
Cobalt Blue Flower 5 Crystal Glass Diamond Floral Paperweight Asian Theme Mint
$16.50
Time Remaining: 4d 18h 17m

Cobalt Blue Flower 5 Crystal Glass Faceted Floral Paperweight Asian Theme Mint
Cobalt Blue Flower 5 Crystal Glass Faceted Floral Paperweight Asian Theme Mint
$16.50
Time Remaining: 4d 18h 20m

VINTAGE ART GLASS PAPERWEIGHT SWIRLED COBALT SLAG
VINTAGE ART GLASS PAPERWEIGHT SWIRLED COBALT SLAG
$9.99
Time Remaining: 21h 23m
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Glass Paperweight Clear  Cobalt BlueEgg Shaped EUC Desk office school
Glass Paperweight Clear Cobalt BlueEgg Shaped EUC Desk office school
$8.00
Time Remaining: 29d 21h 6m
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Art Glass Paperweight Cobalt Blue and White Millefiori Signed Anno 2002
Art Glass Paperweight Cobalt Blue and White Millefiori Signed Anno 2002
$28.00
Time Remaining: 25d 17h 59m
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Vintage Cobalt Blue Swan Art Glass Figurine Paperweight window statue
Vintage Cobalt Blue Swan Art Glass Figurine Paperweight window statue
$9.99
Time Remaining: 6d 23h 4m

FIRE ISLAND ART GLASS COBALT BLUE PAPERWEIGHT VASE SOMMERSO SIGNED NUMBERED
FIRE ISLAND ART GLASS COBALT BLUE PAPERWEIGHT VASE SOMMERSO SIGNED NUMBERED
$49.00
Time Remaining: 2d 3h 26m
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STUNNING COBALT BLUE GES PAPERWEIGHT WITH ORIGINAL BOX GLASS EYE STUDIO
STUNNING COBALT BLUE GES PAPERWEIGHT WITH ORIGINAL BOX GLASS EYE STUDIO
$24.99
Time Remaining: 5d 5h 2m

Cobalt Blue 3 Glass Bird Figurine Paperweight
Cobalt Blue 3 Glass Bird Figurine Paperweight
$9.99
Time Remaining: 27d 20h 47m
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COBALT BLUE GLASS HEART SHAPED PAPERWEIGHT ELSA PERETTI FOR TIFFANY
COBALT BLUE GLASS HEART SHAPED PAPERWEIGHT ELSA PERETTI FOR TIFFANY
$25.00
Time Remaining: 24d 31m
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Rochester Folk Art Guild ART Glass Paperweight Cased Cobalt 1987
Rochester Folk Art Guild ART Glass Paperweight Cased Cobalt 1987
$24.99
Time Remaining: 2d 7h 23m

Anton Intaglio Glass Paperweight Cobalt Blue Controlled Bubble Round Clear LK
Anton Intaglio Glass Paperweight Cobalt Blue Controlled Bubble Round Clear LK
$16.99
Time Remaining: 5d 3h 23m

Tiffany  Co Elsa Peretti Cobalt Blue Heart Art Glass Paperweight Japan NIB
Tiffany Co Elsa Peretti Cobalt Blue Heart Art Glass Paperweight Japan NIB
$89.99
Time Remaining: 26d 2h 53m
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Tiffany Elsa Perreti Cobalt Heart Shape Paperweight Signed
Tiffany Elsa Perreti Cobalt Heart Shape Paperweight Signed
$37.00
Time Remaining: 11d 23h 45m
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Genuine Tiffany  Co Cobalt Blue Crystal Heart Paperweight Elsa Peretti Signed
Genuine Tiffany Co Cobalt Blue Crystal Heart Paperweight Elsa Peretti Signed
$100.00
Time Remaining: 13d 22h 53m
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Callahan Mtn Studios Signed Hand Blown Cobalt Glass Swirl Paperweight 3 inch dia
Callahan Mtn Studios Signed Hand Blown Cobalt Glass Swirl Paperweight 3 inch dia
$37.50
Time Remaining: 4d 23h 50m
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Tiffany Elsa Peretti Cobalt Blue Heart Paperweight
Tiffany Elsa Peretti Cobalt Blue Heart Paperweight
$49.99
Time Remaining: 8d 6h 2m
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TIFFANY  CO ELSA PERETTI 4 COBALT BLUE CRYSTAL GLASS HEART PAPERWEIGHT
TIFFANY CO ELSA PERETTI 4 COBALT BLUE CRYSTAL GLASS HEART PAPERWEIGHT
$21.99
Time Remaining: 16d 13h 39m
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TIFFANY  COMPANY ELSA PERETTI COBALT BLUE CRYSTAL HEART PAPERWEIGHT GIFT
TIFFANY COMPANY ELSA PERETTI COBALT BLUE CRYSTAL HEART PAPERWEIGHT GIFT
$85.00
Time Remaining: 8d 42m
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LARGE VTG ART GLASS PAPERWEIGHT COBALT BLUE  WHITE CONTROLLED BUBBLES SIGNED
LARGE VTG ART GLASS PAPERWEIGHT COBALT BLUE WHITE CONTROLLED BUBBLES SIGNED
$25.00
Time Remaining: 5d 19h 25m
Buy It Now for only: $25.00

Vtg Round Hand Blown Sea Life Paperweight 2 3 4 Dia 2 Fish Coral Cobalt Blue
Vtg Round Hand Blown Sea Life Paperweight 2 3 4 Dia 2 Fish Coral Cobalt Blue
$28.50
Time Remaining: 7d 4h 10m
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Tiffany Heart Cobalt Blue Crystal signed Elsa Peretti exclusive paperweight art
Tiffany Heart Cobalt Blue Crystal signed Elsa Peretti exclusive paperweight art
$40.33
Time Remaining: 11d 3h 48m
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Vintage Elsa Peretti for Tiffany  Co Cobalt Blue Crystal Heart Paperweight
Vintage Elsa Peretti for Tiffany Co Cobalt Blue Crystal Heart Paperweight
$79.99
Time Remaining: 23d 1h 53m
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Tiffany Elsa Peretti Cobalt Blue Heart Paperweight
Tiffany Elsa Peretti Cobalt Blue Heart Paperweight
$24.99
Time Remaining: 28d 1h 13m
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Cobalt Blue Dolphins Glass Paperweight Reef Controlled Bubbles FREE SHIPPING
Cobalt Blue Dolphins Glass Paperweight Reef Controlled Bubbles FREE SHIPPING
$30.00
Time Remaining: 21d 4h 47m
Buy It Now for only: $30.00

Cobalt Blue Clear Heart Glass Paperweight W hole for pen or single stem flower
Cobalt Blue Clear Heart Glass Paperweight W hole for pen or single stem flower
$24.95
Time Remaining: 17d 3h 3m
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Serenity now Buddha Head Paperweight Cobalt Blue Fused Glass FREE SHIPPING
Serenity now Buddha Head Paperweight Cobalt Blue Fused Glass FREE SHIPPING
$23.85
Time Remaining: 16d 17h 21m
Buy It Now for only: $23.85

TOBY MCGEE STUDIOS ART BLOWN GLASS PAPERWEIGHT COBALT BLUE SWIRL
TOBY MCGEE STUDIOS ART BLOWN GLASS PAPERWEIGHT COBALT BLUE SWIRL
$9.95
Time Remaining: 9d 6h 34m
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Perthshire Studio Art Glass PAPERWEIGHT Cobalt Star Design Ribbed Edges 25
Perthshire Studio Art Glass PAPERWEIGHT Cobalt Star Design Ribbed Edges 25
$129.00
Time Remaining: 10d 1h 2m
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Art Glass Turtle Paperweight Cobalt Blue  Clear
Art Glass Turtle Paperweight Cobalt Blue Clear
$12.50
Time Remaining: 23d 1h 59m
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BACCARAT France Art Glass Crystal Paperweight Cobalt Blue Virgin Mary Desktop
BACCARAT France Art Glass Crystal Paperweight Cobalt Blue Virgin Mary Desktop
$45.00
Time Remaining: 4d 13h 58m
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SALE ART GLASS PAPERWEIGHT CobaltPink White Floral Iridescent Hues MSH 90
SALE ART GLASS PAPERWEIGHT CobaltPink White Floral Iridescent Hues MSH 90
$28.00
Time Remaining: 12d 37m
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Art Glass Paperweight Cobalt Blue Red Yellow Green Controlled Bubbles Orig Label
Art Glass Paperweight Cobalt Blue Red Yellow Green Controlled Bubbles Orig Label
$66.33
Time Remaining: 5d 21h 24m
Buy It Now for only: $66.33

1978 TERRY CRIDER Glass HEART Paperweight Cobalt Blue Iridescent Threaded Small
1978 TERRY CRIDER Glass HEART Paperweight Cobalt Blue Iridescent Threaded Small
$47.25
Time Remaining: 22d 16h 42m
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WELCH Art Glass Paperweight Cobalt Blue Carnival Glass Iridescent Orb 3
WELCH Art Glass Paperweight Cobalt Blue Carnival Glass Iridescent Orb 3
$29.50
Time Remaining: 21d 1h 39m
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1988 TUNDRA GLASS Paperweight Cobalt Blue
1988 TUNDRA GLASS Paperweight Cobalt Blue
$25.00
Time Remaining: 7d 15h 37m
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Viking Art Glass Owl Paperweight Cobalt Blue Hand Blown Controlled bubbles
Viking Art Glass Owl Paperweight Cobalt Blue Hand Blown Controlled bubbles
$36.00
Time Remaining: 24d 22h 12m
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Vintage Paperweight Perfume Cobalt Blue Bottle
Vintage Paperweight Perfume Cobalt Blue Bottle
$49.00
Time Remaining: 11d 4h 2m
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Adam Jablonski Art Glass Paperweight Cobalt Blue Yellow Teardrop Bubble Swirl
Adam Jablonski Art Glass Paperweight Cobalt Blue Yellow Teardrop Bubble Swirl
$29.00
Time Remaining: 24d 4h 54m
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MILLEFIORI FLOWER glass PAPERWEIGHT Cobalt Blue Flower
MILLEFIORI FLOWER glass PAPERWEIGHT Cobalt Blue Flower
$64.99
Time Remaining: 19d 4h 4m
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Lundberg Art Glass Disc Paperweight studio  Cobalt blue v3
Lundberg Art Glass Disc Paperweight studio Cobalt blue v3
$9.99
Time Remaining: 15d 13h 38m
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ART GLASS PAPERWEIGHT Cobalt Blue bird BB
ART GLASS PAPERWEIGHT Cobalt Blue bird BB
$22.95
Time Remaining: 20d 5h 35m
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Controlled Bubble Glass Round Paperweight Cobalt Blue White Ground Bottom Unsig
Controlled Bubble Glass Round Paperweight Cobalt Blue White Ground Bottom Unsig
$19.99
Time Remaining: 29d 1h 57m
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Cobalt Blue Glass Paperweight Controlled Bubbles
Cobalt Blue Glass Paperweight Controlled Bubbles
$39.99
Time Remaining: 13d 13m
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Art Glass Apple Paperweight Cobalt w Clear Stem Polished Base 4 1 2 T w Stem
Art Glass Apple Paperweight Cobalt w Clear Stem Polished Base 4 1 2 T w Stem
$10.00
Time Remaining: 17d 17h 20m
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Vintage Art Glass Round Paperweight Cobalt Blue Star Spider
Vintage Art Glass Round Paperweight Cobalt Blue Star Spider
$75.00
Time Remaining: 1d 21h 22m
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Vintage art Glass paperweight cobalt blue and clear with white flower office
Vintage art Glass paperweight cobalt blue and clear with white flower office
$30.00
Time Remaining: 15d 16h 29m
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COBALT BLUE CONTROLLED BUBBLE PAPERWEIGHT 35
COBALT BLUE CONTROLLED BUBBLE PAPERWEIGHT 35
$19.95
Time Remaining: 22d 5h 30m
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NIB Rosenthal Paperweight Cobalt Blue Diamond 3 wide New in Box
NIB Rosenthal Paperweight Cobalt Blue Diamond 3 wide New in Box
$21.50
Time Remaining: 10d 23h 59m
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Cobalt Blue Glass Six Sided Paperweight
Cobalt Blue Glass Six Sided Paperweight
$15.95
Time Remaining: 15d 22h 30m
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VINTAGE MURANO GLASS PAPERWEIGHT COBALT BLUE AND WHITE SIGNED ITALY
VINTAGE MURANO GLASS PAPERWEIGHT COBALT BLUE AND WHITE SIGNED ITALY
$19.95
Time Remaining: 23d 23h 32m
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JOHN DEACONS CONCENTRIC MULTI MILLEFIORI PAPERWEIGHT Cobalt Core 2 wTag
JOHN DEACONS CONCENTRIC MULTI MILLEFIORI PAPERWEIGHT Cobalt Core 2 wTag
$52.00
Time Remaining: 13d 3h 59m
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New Solid Glass 35 Art PAPERWEIGHT COBALT BLUE JELLYFISH PAPERWEIGHT
New Solid Glass 35 Art PAPERWEIGHT COBALT BLUE JELLYFISH PAPERWEIGHT
$8.49
Time Remaining: 27d 5h 53m
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VTG Paperweight White Flower Cobalt Blue Base Controlled Bubble in Middle WOW
VTG Paperweight White Flower Cobalt Blue Base Controlled Bubble in Middle WOW
$12.99
Time Remaining: 16d 3h 25m
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PAPERWEIGHT RED DAHLIA FLOWER MILLIFIORI CENTER ON COBALT BACKGROUND
PAPERWEIGHT RED DAHLIA FLOWER MILLIFIORI CENTER ON COBALT BACKGROUND
$32.00
Time Remaining: 10d 21h 21m
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Cobalt Blue Mushroom Blown Art Glass Paperweight Abstract Clear Cased 1017
Cobalt Blue Mushroom Blown Art Glass Paperweight Abstract Clear Cased 1017
$19.99
Time Remaining: 2h 10m
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PAPERWEIGHT Huge Floral Design Cobalt Blue Cut Facets VINTAGE BOHEMIAN GLASS
PAPERWEIGHT Huge Floral Design Cobalt Blue Cut Facets VINTAGE BOHEMIAN GLASS
$59.99
Time Remaining: 25d 4h 56m
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Levay Art Glass Paperweight Intaglio Cobalt Blue Swirl Signed Iridescent 4
Levay Art Glass Paperweight Intaglio Cobalt Blue Swirl Signed Iridescent 4
$49.95
Time Remaining: 16d 23h 4m
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Czech Art Glass Paperweight Orange Cobalt Blue Large 4
Czech Art Glass Paperweight Orange Cobalt Blue Large 4
$80.95
Time Remaining:
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Cobalt Blue Turtle Paperweight millefiori Beads Super Cute Look Cmog Find
Cobalt Blue Turtle Paperweight millefiori Beads Super Cute Look Cmog Find
$29.99
Time Remaining: 3d 6h 34m
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1995 Glass Eye Studio Art Paperweight Cobalt Metallic Gold Signed Round Globe 3
1995 Glass Eye Studio Art Paperweight Cobalt Metallic Gold Signed Round Globe 3
$67.49
Time Remaining: 25d 23h 26m
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VINTAGE SIGNED ROBERT EICKHOLT PAPERWEIGHT COBALT BLUE DESIGN NR
VINTAGE SIGNED ROBERT EICKHOLT PAPERWEIGHT COBALT BLUE DESIGN NR
$37.49
Time Remaining: 19d 21h 3m
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Vintage Glass Cobalt Blue  White Paperweight 2 tall Joe St Clair
Vintage Glass Cobalt Blue White Paperweight 2 tall Joe St Clair
$25.00
Time Remaining: 4d 21h 55m
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2005 Signed Mad Art Studios Art Glass Ladybug Paperweight Cobalt Blue Free Ship
2005 Signed Mad Art Studios Art Glass Ladybug Paperweight Cobalt Blue Free Ship
$99.99
Time Remaining: 2d 21h 28m
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Cobalt Blue Blown Kerry Glass Paperweight Swirl Gold Aventurine Original Label
Cobalt Blue Blown Kerry Glass Paperweight Swirl Gold Aventurine Original Label
$49.99
Time Remaining: 8d 14h 45m
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AF Murano Vintage Glass Paperweight Millefiori Cobalt Blue Ground Original Label
AF Murano Vintage Glass Paperweight Millefiori Cobalt Blue Ground Original Label
$99.00
Time Remaining: 27d 22h 12m
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Paperweight IRIDIZED Pearl SWIRL over COBALT
Paperweight IRIDIZED Pearl SWIRL over COBALT
$18.00
Time Remaining: 2d 8h 49m
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PAPERWEIGHT Huge Floral Design Cobalt Blue Cut Facets VINTAGE BOHEMIAN GLASS
PAPERWEIGHT Huge Floral Design Cobalt Blue Cut Facets VINTAGE BOHEMIAN GLASS
$55.00
Time Remaining: 23d 5h 24m
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Cute JOHN DEACONS CONCENTRIC MULTI MILLEFIORI PAPERWEIGHT Cobalt Core 1 3 4
Cute JOHN DEACONS CONCENTRIC MULTI MILLEFIORI PAPERWEIGHT Cobalt Core 1 3 4
$49.99
Time Remaining: 23d 19h 11m
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Cobalt Blue Art Glass Heart Paperweight 4
Cobalt Blue Art Glass Heart Paperweight 4
$19.99
Time Remaining: 26d 21h 58m
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Vintage GLASS PAPERWEIGHT Beautiful Cobalt Blue with Pink Flower 3 3 4
Vintage GLASS PAPERWEIGHT Beautiful Cobalt Blue with Pink Flower 3 3 4
$40.00
Time Remaining: 13d 56m
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Vintage GLASS PAPERWEIGHT Beautiful Cobalt Blue with Flowers 3 3 4
Vintage GLASS PAPERWEIGHT Beautiful Cobalt Blue with Flowers 3 3 4
$40.00
Time Remaining: 13d 56m
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TIFFANY  CO ELSA PERETTI COBALT BLUE HEART PAPER WEIGHT
TIFFANY CO ELSA PERETTI COBALT BLUE HEART PAPER WEIGHT
$46.59
Time Remaining: 4h 20m
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Vtg Teal Blue Paperweight Circular Bubbles Cobalt Blue Heavy Art Glass Figurine
Vtg Teal Blue Paperweight Circular Bubbles Cobalt Blue Heavy Art Glass Figurine
$24.95
Time Remaining: 18d 2h 53m
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Larson Signed Art Glass Cobalt Blue Paperweight Bubble Design USA 1997 VGC
Larson Signed Art Glass Cobalt Blue Paperweight Bubble Design USA 1997 VGC
$34.99
Time Remaining: 24d 4h 55m
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Antique Rainbow Paperweight Hand Blown Controlled Bubbles Cobalt Blue
Antique Rainbow Paperweight Hand Blown Controlled Bubbles Cobalt Blue
$49.99
Time Remaining: 18d 2h 25m
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1998 Gibson Paperweight End of Day Cobalt Iridescent Art Glass Signed
1998 Gibson Paperweight End of Day Cobalt Iridescent Art Glass Signed
$36.00
Time Remaining: 7d 6h 12m
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Eickholt Art Glass Paperweight 81 Ice Planet w Rainbows





Paperweight Cobalt

help with pre-calculus?

At a glassware factory, molten cobalt glass is poured into molds to make paperweights. Each mold is a rectangular prism whose height is 3 inches greater than the length of each side of the square base. A machine pours 20 cubic inches of liquid glass into each mold. What are the dimensions of the mold?
any help with this one is appreciated

An aspirin tablet in the shape of a right circular cylinder had height centimeter and radius centimeter. The manufacturer also wishes to market the aspirin in capsule form. The capsule is to be centimeters long, in the shape of a right circular cylinder with hemispheres attached at both ends. Find the radius of the capsule so that its volume is equal to that of the tablet.
any help with this one is good too!!!!
the table has a height of 1/3 cm and a radius of 1/2cm. the capsule is 3/2 cm long
the tablet has a height of 1/3cm and a radius of 1/2cm. The capsule is 3/2 cm long

First one, x²(x+3) = 20, so solve x^3 + 3x² - 20 = 0, and get x=2, so mould is 2x2x5.

Second one, tablet volume is πr²h = (1/2)²(1/3)π = π/12 cc. Capsule is cylinder + sphere, πr²(3/2 - 2r) + (4/3)πr^3, so

(4/3)πr^3 - 2πr^3 + (3/2)πr² = π/12
(-2/3)πr^3 + (3/2)πr² = π/12
-8r^3 + 18r² = 1
8r^3 - 18r² + 1 = 0
r = -.2247 .... useless solution, neg. radius
r = 2.2247 .... useless solution, (3/2-2r) gives negative volume
r = 0.25 cm

Paperweight Cobalt

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