A number of different rosewoods can be used for fingerboards: Indian RW, Madagascar, Brazilian, Cocobolo, African blackwood, etc. One advantage is that RW fingerboards tend to be less heavy than ebony. Secondly, RWs are more resonant (lower dampening or sound-absorbing attributes) and can contribute to better sustain in guitars. If RW is specified, I generally use an Indian RW fingerboard with a matching bridge. If you have a specific rosewood in mind, please let me know and I will check my supply.
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