ETF.com's Lara Crigger discusses physical gold ETFs and gold mining ETFs, including recent flows and the impact of fee competition.  Matt Bartolini, Head of SPDR Americas Research at State Street Global Advisors, spotlights the SPDR Gold MiniShares Trust (GLDM) and explains the role of gold in a portfolio.  Juan Carlos Artigas, Director of Investment Research at the World Gold Council, offers perspective on the current gold market and whether cryptoassets are a potential gold replacement.