Assuming SGR can make 240koz/year, G 2.6M. SGR's production cost at that level should be lower, but let's call them equal.
SGR - 280.5M shares out, fully diluted makes a market cap of $1.14B as of Friday's close.
Market cap/oz prod:
SGR -$4,757
G - $11,292
Makes an $11 SGR share price not so unthinkable.