But what happens now?

For example, i've some tread in wich i ask for loan and i offer Jewels or Gold as collateral (simply because i pay this gold over 1700$ and i woud'nt sell it for having loss) . But if we can't trust in ledendary escrow on BTC talk, there is any other way to ensure lender and borrower?

I think, the only way, is to use 2 escrow for a simple transaction. It could be simply, for example by using 2F. First escrow has the password, second escrow has the 2F.