The invention relates to a glass composition for use in a lamp bulb including cobalt oxide to provide a blue colored glass, which composition comprises alkali metal oxide including lithium oxide.

本发明涉及一种用于灯泡的玻璃合成物，其含有能提供蓝色玻璃的氧化钴，组分中含有包括氧化锂的碱金属氧化物。

youdao

Whimsical glass pipes from England and Italy are purely ornamental, but striking in their shades of vibrant cobalt blue and ruby red.

FORBES: Where There's Smoke, There Are Buyers