About Cobalt-5, 515

One of the most popular colors in the Glass Alchemy Cobalt Series, Cobalt 5 delivers deep cobalt saturation with smooth workability.

Dense enough to produce a true deep cobalt blue in blown and surface applications, it still melts cleanly and works easily in the flame. Thin blown applications between layers of clear develop a vibrant, richly illuminated cobalt tone.

Excellent for stringers, encasement, and cane work.

Part of the broader Glass Alchemy cobalt family.

Working Tip: Work in neutral flame to avoid reduction (gray streaks).

Artist Description by Mike Shelbo:

"Cobalt-5 is very dense in color concentration, yet not as stiff in workability as Cobalt-6.

Be sure to use a neutral flame with this color as it can be susceptible to over reduction that will leave grey patches or streaks. Cobalt-5 is great for stringers and blown work that will leave you with a true deep cobalt. Sandwich between clear layers and blow out thin for a vibrant and beautiful cobalt blue transparent.

Works nicely, and melts easily into itself with no mark or sign of where glass was added. My favorite Cobalt-5 quality is that it shines through the color when it is brightly back lit." - Mike Shelbo