Skip to main content

Blown Glass Blue

60
6,580
1,600
369
to
850
4,307
3,973
8,521
7,638
7,935
3,171
1,016
719
315
255
72
54
29
25
23
18
15
14
13
9
7
3
2
45
311
6,215
1,970
849
3,340
1,492
85
107
389
210
119
720
880
547
338
182
8,038
5,591
2,691
2,447
1,815
7,297
4,667
763
754
622
402
243
207
152
136
Sort By
Murano Gambaro & Poggi Blown Glass Blue Millefiori Footed Bowl
By Vintage Murano Gallery
Located in Stamford, CT
Murano Gambaro & Poggi sky blue blow glass millefiori footed bowl. Curvy cobalt blue blown glass
Category

Vintage 1980s Italian Hollywood Regency Decorative Bowls

Materials

Blown Glass

Blown Glass Blue Baby Shoe/Boot Christmas Ornament w/ White Glitter Paint
Located in Clifton Forge, VA
This little blown glass Christmas ornament baby boot is as sweet as can be! It is in good condition
Category

Late 20th Century Unknown Folk Art Historical Memorabilia

Materials

Blown Glass, Paint

Blue Enamelled Bohemian Glass Liquor Glasses
Located in North Hollywood, CA
Bohemia blown glass blue glasses. Mouth blown glass in a stunning light blue color enhanced with hand
Category

Mid-20th Century Czech Bohemian Barware

Materials

Blown Glass

Four Hand Blown Glass Vessels by the Zeller Glass Company
By Zeller Glass Company
Located in Palm Springs, CA
Four hand blown glass vessels by the Zeller Glass Company, Morgantown, West Virginia. The caramel
Category

Vintage 1970s American Organic Modern Glass

Materials

Blown Glass

Four Large Hand Blown Glass Vessels by the Zeller Glass Company
By Zeller Glass Company
Located in Palm Springs, CA
Four large hand blown glass vessels by the Zeller Glass Company, Morgantown, West Virginia. Colors
Category

Vintage 1970s American Organic Modern Glass

Materials

Blown Glass

Italian Modern Blue Glass and Chrome Suspension / Pendant Lamp
Located in Barcelona, ES
Eye-catching suspension light with blown glass blue shade and chromed steel accents, Italy, 1960s
Category

Mid-20th Century Italian Mid-Century Modern Chandeliers and Pendants

Materials

Steel, Chrome

Blue and Clear Hand Blown Murano Dish
By Murano Glass Sommerso
Located in Los Angeles, CA
Vintage hand blown blue & clear Murano glass dish. A great accent piece or bookshelf decor.
Category

Early 20th Century Italian Mid-Century Modern Serving Bowls

Materials

Blown Glass

Collection of Blue Blown Glass from Afghanistan
Located in Doylestown, PA
A collection of twelve pieces of blown glass vases, bowls and jars from Herat, Afghanistan, the
Category

Vintage 1980s Afghan Primitive Glass

Materials

Glass

Cobalt Blue Glass Jar – Tall Vase – Mouth Blown
Located in Hook, Hampshire
Cobalt Blue Glass Jar – Tall Vase – Mouth Blown Cobalt Blue Glass Jar – Tall Vase – Mouth Blown
Category

21st Century and Contemporary Hungarian Glass

Materials

Glass

Monica Bratt for Reijmyre, Eight Sherry Glasses in Blue Mouth Blown Art Glass
Located in Copenhagen, DK
Monica Bratt for Reijmyre. Eight sherry glasses in blue mouth blown art glass. 1950s. Measures: 10
Category

Vintage 1950s Swedish Scandinavian Modern Glass

Materials

Blown Glass

Monica Bratt for Reijmyre, 17 Small Cocktail Glasses in Blue Mouth Blown Glass
Located in Copenhagen, DK
Monica Bratt for Reijmyre. 17 small cocktail glasses in blue mouth-blown art glass. 1950s
Category

Vintage 1950s Swedish Scandinavian Modern Glass

Materials

Blown Glass

Murano Art Glass Apple and Pear, Hand Blown, Blue, Purple, Excellent Condition
By Murano Glass Sommerso, Alfredo Barbini
Located in Kansas City, MO
Murano art glass apple and pear Sommerso blue and purple designed by Alfredo Barbini. Both have two
Category

Vintage 1950s Italian Mid-Century Modern Glass

Materials

Art Glass

Mdina Maltese Blue Glass 'Fish' / 'Axe Head' Vase - Signed 1979
By Mdina
Located in Bolton, GB
A wonderful, heavy (2 kg unpacked) Maltese blue & green glass Fish vase, also known by collectors
Category

Vintage 1970s Maltese Mid-Century Modern Glass

Materials

Glass, Art Glass, Blown Glass

Beltegeuse in Light Blue Blown Glass by Marco Zanini for Memphis Milano Collecti
By Marco Zanini, Memphis Milano
Located in La Morra, Cuneo
Beltegeuse in light blue blown glass by Marco Zanini for Memphis Milano collection Additional
Category

2010s Glass

Materials

Blown Glass

Contemporary Blue Yellow Fruit Vase Blown Glass Handcrafted Natalia Criado
By Natalia Criado
Located in Milan, IT
. Color: blue/yellow Material: borosilicate glass Wonder crystals collection Handcrafted in Italy
Category

2010s Italian Bauhaus Centerpieces

Materials

Blown Glass

Mexican Set of 5 Mouth-Blown Water Glasses Made of Cobalt Blue Glass
By Arte de Mexico
Located in Queretaro, Queretaro
These elegant cobalt blue glasses are perfect for wedding tables decor or any special event
Category

21st Century and Contemporary Mexican Spanish Colonial Glass

Materials

Blown Glass

Vintage Blue - Green Blown Glass Oil Cruet - Circa 1940
Located in Barcelona, ES
Immerse yourself in nostalgia with this beautiful blue - green blown glass oil cruet dating back to
Category

Vintage 1940s Spanish Mid-Century Modern Glass

Materials

Blown Glass

Cobalt Blue Glass Jar - Mid Height Vase - Mouth Blown
Located in Hook, Hampshire
Cobalt Blue Glass Jar – Mid Height Vase – Mouth Blown Cobalt Blue Glass Jar – Mid Height Vase
Category

21st Century and Contemporary Hungarian Glass

Materials

Glass

Large Cobalt Blue Blown Glass Decanter Manner of Blenko
By Blenko Glass
Located in Fulton, CA
Colbalt blue blown glass decanter with stopper. Made in the manner of Blenko Glass. Circa. 1960's
Category

Mid-20th Century American Mid-Century Modern Glass

Materials

Blown Glass

1930s Bowl Italian Design Murano Murrine Blown Glass White Blue Turquoise, Ferro
Located in London, GB
A 1938 very beautiful bowl. Blown Murano glass Murrine technique in blue, turquoise and white
Category

Vintage 1930s Italian Mid-Century Modern Glass

Materials

Blown Glass

18th Century Italian Murano Clear Glass and Blue Trimmed Blown Glass Bottles
By Lavorazione Arte Murano
Located in Firenze, IT
blown set is made of the finest transparent and deep blue Murano art glass. The glass is very thin and
Category

Antique 18th Century Italian Rococo Glass

Materials

Blown Glass, Art Glass, Murano Glass

Vintage Signed Higgins Fused Glass Fern Ruffled Bowl Green, Blue, Gray Silver
By Higgins Glass
Located in North Miami, FL
This beautiful signed mid century modern Higgins fused glass bowl has subtle colors of blue green
Category

Vintage 1950s American Mid-Century Modern Glass

Materials

Blown Glass

Translucent Blue Hand Blown Enameled Glass Pitcher/Tankard
Located in Malibu, CA
Late 19th C/early 20th C brilliant translucent aqua blue hand blown glass pitcher w/ applied handle
Category

Early 20th Century Late Victorian Pitchers

Materials

Blown Glass

Monica Bratt for Reijmyre, 15 Champagne Flutes in Blue Mouth Blown Art Glass
Located in Copenhagen, DK
Monica Bratt for Reijmyre. 15 champagne flutes in blue mouth blown art glass. 1950s. Measures: 21
Category

Vintage 1950s Swedish Scandinavian Modern Glass

Materials

Blown Glass

Monica Bratt for Reijmyre, 9 Glasses in Blue Mouth Blown Art Glass
Located in Copenhagen, DK
Monica Bratt for Reijmyre. 9 Glasses in blue mouth-blown art glass. Swedish design, mid 20th
Category

Mid-20th Century Swedish Scandinavian Modern Glass

Materials

Art Glass

Biot Wedding Glass in Blown Glass, 1970
By Biot
Located in Saint Rémy de Provence, FR
Biot wedding glass in hand-blown 1970 glass, 45 cm high, mouth-blown. Blue color. Very good
Category

Vintage 1970s European Mid-Century Modern Glass

Materials

Blown Glass

Biot Wedding Glass in Blown Glass, 1970
Biot Wedding Glass in Blown Glass, 1970
H 17.72 in W 9.85 in D 9.85 in
Sky Blue Stem Glass in Blown Murano Glass and Gold Leaf 1990s Venice Italy
Located in Villaverla, IT
Sky Blue Stem Glass in Blown Murano Glass and Gold Leaf 1990s Venice Italy. Entirely handcrafted in
Category

1990s Italian Modern Glass

Materials

Gold

Murano Glass Goblet "Tipetto" Light Blue Octagonal Blown Glass, Italy
Located in Bresso, Lombardy
Made in Italy. The drinking glass is made in hand-blown Murano glass. It is vintage, therefore it
Category

2010s Italian Post-Modern Glass

Materials

Murano Glass

Monica Bratt for Reijmyre, Four Wine Glasses in Blue Mouth Blown Art Glass
Located in Copenhagen, DK
Monica Bratt for Reijmyre. Four wine glasses in blue mouth-blown art glass. Swedish design, mid
Category

Mid-20th Century Swedish Scandinavian Modern Glass

Materials

Art Glass

Monica Bratt for Reijmyre, Four Shot Glasses in Blue Mouth Blown Art Glass
Located in Copenhagen, DK
Monica Bratt for Reijmyre. Four shot glasses in blue mouth-blown art glass. Swedish design, mid
Category

Mid-20th Century Swedish Scandinavian Modern Glass

Materials

Art Glass

Contemporary Blue Glass Blown Salt Cellar and spoon Handcrafted, Natalia Criado
By Natalia Criado
Located in Milan, IT
unique addition to your table. Color: clear/blue Material: borosilicate glass Wonder crystals collection
Category

2010s Italian Mid-Century Modern Glass

Materials

Crystal

Bohemian Glass Vase Loetz circa 1900 Art Nouveau Jugendstil Blue Silver
By Loetz Glass
Located in Klosterneuburg, AT
World Exhibition, Blue, Silver, Yellow, Viennese Art Nouveau, Jugendstil, Art Deco, art glass
Category

Early 20th Century Austrian Jugendstil Glass

Materials

Glass

Bohemian Glass Vase Loetz circa 1900 Pampas Cobalt Art Nouveau Blue
By Loetz Glass
Located in Klosterneuburg, AT
Bohemian glass vase, manufactured by Johann Loetz Witwe, Pampas Cobalt decoration, ca. 1899, Blue
Category

Early 20th Century Austrian Jugendstil Glass

Materials

Glass

Whitefriars #9709 Baxter Blue/Green Glass Ribbon Trail Vase
By Whitefriars, Geoffrey Baxter
Located in Bolton, GB
A beautiful kingfisher blue & clear glass "Ribbon" tapering vase with applied green ribbon trailing
Category

Vintage 1960s British Mid-Century Modern Glass

Materials

Glass, Art Glass, Blown Glass

Murano "Albarelli" Italian Pair of Bottles with Lid Blue Blown Glass
Located in Prato, Tuscany
pair of blue blown glass bottles with lid; the two bottles were made in a magical, fascinating, and
Category

Mid-20th Century Italian Medieval Glass

Materials

Glass

Murano Bowl in Blue Mouth Blown Art Glass. Italian Design, 1960s
Located in Copenhagen, DK
Murano bowl in blue mouth blown art glass. Italian design, 1960s. Measures: 16 x 7 cm. In perfect
Category

Vintage 1960s Italian Mid-Century Modern Glass

Materials

Art Glass

Glass Vase with Brass Fitting Koloman Moser Loetz circa 1901 Blue Green
By Loetz Glass
Located in Klosterneuburg, AT
Flecken decoration, ca. 1901, Art Nouveau, Jugendstil, Art Deco, art glass, iridescent glass, blue, green
Category

Early 20th Century Austrian Jugendstil Glass

Materials

Glass

Bohemian Glass Vase Loetz circa 1900 Signed Art Nouveau Jugendstil Blue Green
By Loetz Glass
Located in Klosterneuburg, AT
Bohemian glass vase, manufactured by Johann Loetz Witwe, unidentified decoration, ca. 1900, Blue
Category

Early 20th Century Austrian Jugendstil Glass

Materials

Glass

Handmade Centerpiece the Flat by Neri & Hu in Blue Blown Glass & Brass Base
By Neri & Hu
Located in Milan, IT
blue element in mould-blown glass. The slight central hollow can hold fruit, small floral arrangements
Category

2010s Italian Centerpieces

Materials

Brass

Glass Vase Loetz PG Rubin 6893 Decoration circa 1900 Red Blue Art Nouveau
By Loetz Glass
Located in Klosterneuburg, AT
Nouveau, Jugendstil, Art Deco, art glass, iridescent glass, blue, red Technique: Glass, mould-blown and
Category

Early 20th Century Austrian Jugendstil Glass

Materials

Glass

Monica Bratt for Reijmyre, Five Glasses in Blue Mouth-Blown Art Glass
Located in Copenhagen, DK
Monica Bratt for Reijmyre. Five glasses in blue mouth-blown art glass. Swedish design, mid 20th
Category

Mid-20th Century Swedish Scandinavian Modern Tableware

Materials

Art Glass

Glass Vase Loetz PG 1/214 Decoration circa 1901 Orange Blue Silver Art Nouveau
By Loetz Glass
Located in Klosterneuburg, AT
, Jugendstil, Art Deco, art glass, iridescent glass, orange, blue, silver signed "Loetz Austria" Technique
Category

Early 20th Century Austrian Jugendstil Glass

Materials

Glass

Antique 19th Century Nailsea Type Blown Cobalt Blue Glass Flask with White Loops
By Nailsea Glasswork
Located in Philadelphia, PA
A fine antique glass flask. In cobalt blue with pulled white marbrie loops to the surface, a
Category

Antique 19th Century British Georgian Glass

Materials

Glass, Blown Glass

Glass Vase Loetz PG 3/492 Decoration circa 1903 Pink Green Blue Art Nouveau
By Loetz Glass
Located in Klosterneuburg, AT
. 1903, Bohemia, Art Nouveau, Jugendstil, Art Deco, art glass, iridescent glass, pink, orange, blue
Category

Early 20th Century Austrian Jugendstil Glass

Materials

Glass

Empoli Rossini Blown Glass Decanter with Stopper
By Empoli
Located in Fulton, CA
An ice blue blown glass decanter with stopper by Empoli Glass, Italy. Retains "Empoli" paper label
Category

Mid-20th Century Italian Mid-Century Modern Glass

Materials

Blown Glass

Country Style Hand Blown Crystal Vase Blue Glass Sofina Boutique Kitzbühel
By Sofina Boutique Kitzbühel
Located in Kitzbuhel, AT
Hand blown crystal vase in light blue glass with lily of the valley decor all around. The blooms
Category

2010s German Country Glass

Materials

Crystal

Hand Blown Dimple Design Handled Stylish Art Glass Jug
Located in Bishop's Stortford, Hertfordshire
An unusual hand blown art glass handled jug with a dimple design body in opaque green glass with
Category

20th Century Czech Modern Glass

Materials

Blown Glass

Hand Blown Dimple Design Handled Stylish Art Glass Jug
Hand Blown Dimple Design Handled Stylish Art Glass Jug
Free Shipping
H 10.73 in W 3.15 in D 3.15 in
Skrdlovice Antique Glass Vase Designed by Emmanuel Beranek 1946
By Beranek Glass 1
Located in Tunbridge Wells, GB
: 'Antique Glass' bubbled effect with pale blue powdered enamel. Three applied rams horn handles and pulled
Category

Vintage 1940s Czech Glass

Materials

Blown Glass

1980s Handcrafted Double Old-Fashioned Cobalt Blue Thick Art Glass set of 6
By Murano Glass Sommerso
Located in North Hollywood, CA
hand-blown glasses boast a thick and heavy construction in captivating cobalt blue and clear glass with
Category

Late 20th Century Italian Post-Modern Barware

Materials

Art Glass, Blown Glass, Murano Glass

Country Style Hand Blown Crystal Vase Blue Glass Sofina Boutique Kitzbühel
By Sofina Boutique Kitzbühel
Located in Kitzbuhel, AT
Hand blown crystal vase in blue glass with a country style decor all around. The leaves and deers
Category

2010s German Country Glass

Materials

Crystal

Country Style Hand Blown Crystal Latern Blue Glass Sofina Boutique Kitzbühel
By Sofina Boutique Kitzbühel
Located in Kitzbuhel, AT
Hand blown crystal vase/latern in light blue glass with lily of the valley decor all around. The
Category

2010s German Country Glass

Materials

Crystal

Blown Glass Dichroic and Silver, Iridescent Color from Pink to Blue.
Located in Roma, IT
This very light piece of artistic glass changes color based on light. changes color, from pink to
Category

Mid-20th Century Italian Mid-Century Modern Centerpieces

Materials

Silver

Las Palmas, Contemporary Blown Glass Candlestick by Vito Nesta
By Vito Nesta
Located in Milano, Lombardia
Precious candlestick in blown glass by Venetian artisans. The particular palm shape is a tribute to
Category

2010s Italian Glass

Materials

Blown Glass

Las Palmas, Contemporary Blown Glass Candlestick by Vito Nesta
By Vito Nesta
Located in Milano, Lombardia
Precious candlestick in blown glass by Venetian artisans. The particular palm shape is a tribute to
Category

2010s Italian Glass

Materials

Blown Glass

Las Palmas, Contemporary Blown Glass Candlestick by Vito Nesta
By Vito Nesta
Located in Milano, Lombardia
Precious candlestick in blown glass by Venetian artisans. The particular palm shape is a tribute to
Category

2010s Italian Glass

Materials

Blown Glass

Hand blown Glass Pitcher With Green and Blue Swirl Design Mexico 1970s
Located in North Hollywood, CA
Hand blown Glass Pitcher With Green and Blue Swirl Design Mexico 1970s. Handcrafted blown art glass
Category

Mid-20th Century Mexican Mid-Century Modern Barware

Materials

Murano Glass, Blown Glass, Art Glass

Alessandro Pianon Blown Glass Fish
By Alessandro Pianon
Located in West Palm Beach, FL
An Alessandro Pianon blown glass fish Created at Vistosi in Murano, Italy Light Blue Translucent
Category

Vintage 1960s Italian Glass

Materials

Art Glass

Small Vase Loetz Blue Purple Gold Flowers circa 1900 Austrian Jugendstil
By Loetz Glass
Located in Klosterneuburg, AT
Small Vase Johann Loetz Witwe blue purple flowers freehand and reduced blown glass I/116 decoration
Category

Antique Early 1900s Austrian Jugendstil Glass

Materials

Glass, Blown Glass

Set of three Small Swedish Cobalt Blue Hand Blown Glass Bowl or Trinkets
Located in Haddonfield, NJ
Set of three Small Swedish cobalt blue hand blown glass bowl or trinkets.
Category

Antique 19th Century Swedish Rustic Serving Bowls

Materials

Blown Glass

Ronneby, Sweden, Two Fish in Blue Mouth-Blown Art Glass, 1970s
Located in Copenhagen, DK
Ronneby, Sweden. Two fish in blue mouth-blown art glass. 1970s. Largest measures: 20 x 14 cm. In
Category

Vintage 1970s Swedish Scandinavian Modern Glass

Materials

Art Glass

  • 1
  • ...
Get Updated with New Arrivals
Save "Blown Glass Blue", and we’ll notify you when there are new listings in this category.

Blown Glass Blue For Sale on 1stDibs

Choose from an assortment of styles, material and more with respect to the blown glass blue you’re looking for at 1stDibs. Frequently made of glass, blown glass and metal, every blown glass blue was constructed with great care. Find 1555 options for an antique or vintage blown glass blue now, or shop our selection of 330 modern versions for a more contemporary example of this long-cherished piece. Your living room may not be complete without a blown glass blue — find older editions for sale from the 18th Century and newer versions made as recently as the 21st Century. Each blown glass blue bearing Mid-Century Modern, Modern or Art Deco hallmarks is very popular. You’ll likely find more than one blown glass blue that is appealing in its simplicity, but René Lalique, Barovier&Toso and Alfredo Barbini produced versions that are worth a look.

How Much is a Blown Glass Blue?

The average selling price for a blown glass blue at 1stDibs is $1,494, while they’re typically $75 on the low end and $119,000 for the highest priced.
Questions About Blown Glass Blue
  • 1stDibs ExpertApril 5, 2022
    Mouth-blown glass is glassware produced with a traditional technique called mouth-blowing. It involves using a long blowpipe to draw molten glass upwards and then turning it to create different shapes. On 1stDibs, you can shop a variety of mouth-blown glass.
  • 1stDibs ExpertMay 5, 2023
    Yes, Murano is blown glass. Artisans on Murano, an island in Venice, Italy, produce the colorful glassware through a unique process. Murano glass is identifiable by its richly layered colors and characteristic gold or silver flecks inside the glass. Authentic Murano glass often has small imperfections and an irregular shape due to the freeform creation process. One of the earliest Venetian glass furnaces is believed to have been established as far back as the 8th century (the filigrana technique is as old as the 16th century). On 1stDibs, shop a collection of Murano glassware from some of the world’s top sellers.
  • 1stDibs ExpertApril 5, 2022
    All Murano glass pieces are either hand-blown or mouth-blown in Murano, Italy. This will cause small imperfections like air bubbles or a Pontil mark. In addition, the glass master will leave his signature on the piece indicating its authenticity. It’s important to purchase from a vetted seller or vendor to ensure authenticity. Shop authentic Murano glass pieces from 1stDibs.
  • 1stDibs ExpertApril 5, 2022
    Yes, Viking Glass is hand-made. In 1940, the high-end glass company focused on quality Swedish Modern hand-made pieces, celebrated for their vibrant colors. You can shop a selection of Viking Glass pieces from some of the world’s top art dealers on 1stDibs.
  • 1stDibs ExpertApril 5, 2022
    Bristol glass gets its signature blue hue from the inclusion of cobalt oxide in the glass-making process. Bristol blue glass has been made in Bristol, England, since the 18th century and is a favorite among collectors. Find a selection of Bristol blue glass goods on 1stDibs.
  • 1stDibs ExpertApril 5, 2022
    No, not all blue glass is cobalt glass. Only those made with cobalt oxide can be called cobalt. In some pieces, the presence of copper oxide accounts for the color, however, cobalt glass is much more common. You'll find a collection of cobalt glass on 1stDibs.
  • 1stDibs ExpertOctober 5, 2021
    The value of blue glass varies greatly depending on the condition of the glass and it may differ based on what a seller is asking for it. Reasonably priced vintage cobalt blue selections vary widely in variety and price. A single piece of blue glass may cost anywhere between $15 and $50. Visit 1stDibs for blue glass kitchenware ranging from below $1,000 to over $3,000.
  • 1stDibs ExpertApril 5, 2022
    One way to tell if you have a piece of genuine hand-blown glass is to locate the pontil mark. This is a scar usually found on the bottom of the piece where the pontil was broken off from the glass object. An absence of this scar may indicate your glass piece was mold-blown. Shop a collection of vintage and contemporary hand-blown glass from some of the world’s top sellers on 1stDibs.
  • 1stDibs ExpertApril 5, 2022
    How old cobalt glass is varies greatly. Ancient Mesopotamian examples exist from roughly 2000 BC. In China, cobalt glass became common during the Zhou Dynasty, which lasted from 1122 to 221 BC. European cobalt glass may date back to as early as the 15th century. Shop a collection of antique cobalt glass on 1stDibs.
  • 1stDibs ExpertApril 5, 2022
    If your glass has a blue tint to it, it is likely cobalt blue glass. There are three shades of cobalt glass; dark cobalt, which has a slight purplish hue, light or cornflower blue and medium blue. To verify its authenticity, check with an appraiser. You can also shop a collection of cobalt blue glass from some of the world’s top sellers on 1stDibs.
  • 1stDibs ExpertApril 5, 2022
    Cobalt blue glass is a deep blue glass that often gets its color by the addition of cobalt oxide in the molten glass mixture when the glass is being formed. The best way to identify cobalt blue glass is by the color. Shop a collection of cobalt blue glass from some of the world’s top sellers on 1stDibs.
  • 1stDibs ExpertApril 5, 2022
    Yes, cobalt oxide makes glass blue. Different amounts of cobalt can be used to create more saturated levels of blue or to simply neutralize yellow for a more clear finish. Copper oxide can also be used to create a blue tinted glass. Shop a collection of cobalt glass from some of the world’s top sellers on 1stDibs.