Re: Ibanez Basswood
Gios can be very mixed. Some are basswood, some are agathis, the spec changes every now and then. The same series from the same year can have different wood depending on the supply.
That said, all the GRG I have encountered are too heavy for basswood. Even cheap basswood should not be that heavy. My guess is agathis actually which can be heavier than mahogany.