Tsavorite

Is it bright green sapphire come "chrome green, such as tsavorite or even emerald? All sapphires green, I have seen are not very intense color ....

No, this is not the case. Its chemical composition and crystal structure does not allow it.

Yes, green sapphire can come in a green more intense when laboratory created. It is rare to see in the natural world, although certain conditions the opportunity of a better green color to form. So yes it is possible. Mkay? so yeaaaa