Hi I'm Andi McClure and i recently posted a guide of doing some research on Cobalt Mineral and it's uses and Crystal Sapphire what it is and what else is it used for besides glass?

I love the library and it turns out that my 2 yr. old son loves it as much as I do, but in a different, terroristic way.  He made his rounds and raised a few eyebrows, Mom hot on his trail, cuz i said my kid would'nt act like an animal when we went places.  I was a different person then. . .

I didn't find much in the way of the Cobalt mineral.  In glass making, it is a "vitreous form of cobalt oxide.  Small quantities of the coloring agent  were simply added to the glass mixture."  'Colored Glass:  The Collector's World in Color'  by:  Derek C. Davis & Keith Middlemas.  Hence the Cobalt coloring is a mixture of Cobalt Oxide and Copper.  It is stated that this method was done in the 1800's, and a popular name then was "Bristol".

Nothing on Crystal Sapphire, doesn't mean it's not out there.  So just a little update for my Dear Readers and possible Future Customers.

Andi McClure