I believe they have it at Olympic Color. I got some green lustre frit in a bulk buy from OCR a while back...
www.glasscolor.com. I believe it's a gaffer color.
OK - I just checked the OCR website and under gaffer (lampwork) cane there is no green lustre, but they may have it in the glassblowing section. If you are looking for chunks, and not smaller frit, you may be able to use the size they sell for glassblowers.
Hope this helps!
Carla