What is cobalt blue?

The compounds cobalt silicate and cobalt (II) aluminate (CoAl 2 O 4, cobalt blue) give a distinctive deep blue color to glass, ceramics, inks, paints and varnishes. Cobalt occurs naturally as only one stable isotope, cobalt-59.

What is cobalt used for?

Cobalt is primarily used in lithium-ion batteries, and in the manufacture of magnetic, wear-resistant and high-strength alloys. The compounds cobalt silicate and cobalt (II) aluminate (CoAl 2 O 4, cobalt blue) give a distinctive deep blue color to glass, ceramics, inks, paints and varnishes.

Is there cobalt in my jewelry?

Since cobalt is a metal, it's commonly found in alloys (i.e. stainless steel and costume jewelry). Any jewelry that is purchased for very cheap or from overseas contains a high level of cobalt. Since cobalt allergies are on the rise, it is important to know where your jewelry is coming from.

What are the main ores of cobalt?

The main ores of cobalt are cobaltite, erythrite, glaucodot and skutterudite (see above), but most cobalt is obtained by reducing the cobalt by-products of nickel and copper mining and smelting. [66] [67]