Generally when they're clear they give out more light, but it depends on how many pendants you have, their size, and the wattage of the bulbs. And the size of your kitchen! Usually kitchen island pendants are just accent lighting and the room requires a secondary source of task lighting, like recessed lighting.

We custom-make blown glass pendants and chandeliers for any type of space and have done a lot of pieces with a similar feel. :)

Hola un hermoso decoración

As a kitchen designer, I I feel that lighting is s crucial part of any remodel. I wrote an article for my clients that you might find helpful: http://bit.ly/1pgE1Pv