To me ...It looks like a screwed up onxy corksscrew......or maybe a red slag....Its in great condition..... kind of marble you but on you computer top and pick it up every once in awhile ... one day... you look at it and say I now what this is!!!!1
Mine is almost exactly the same colors as yours : grren-blue,blue-yellow,yellow-red,white-blue,white-red......Al's are the same also I believe>and i believe the white red patch is a tad smaller than the rest