Frenchy, You got a winner there. It's called Sansevieria trifasciata hahnii 'Streaker'. It is some what rare. In time it will have looks like 'Twister' or 'Gold Hahnii'. With no two leaves looking exactly alike. Love them and I know you will too.
Tiffany, Most Sans loose there variegation when propergated from leaves. They mostly revert to plain trifasciata or in futura case, Robusta. That's rare that yours reverted to Black Robusta. I had one I gave to 'hijole' or Greg on our other web site. Nice as it was, with limited space, I like the yellow edges better.
