Albeit your photos are not clear, I believe there are some Schreger lines discernable. If this is the case, then it is ivory.
With silver vs. white metal, is impossible to say for sure from the photos. To be sure, best way would be to follow Ariel's advice.
As with regards to Wootz... in the current condition of the blade it is definitely impossible to say. In order to know for sure, you have to polish the blade to grit 2000-3000 and try etching it.
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