Saigon Jewelry Company gold bar fell 0.21% to VND141.7 million (US$5,483.22) per tael. A tael equals 37.5 grams or 1.2 ounces.
Gold ring declined 0.21% to VND141.1 million per tael. Gold prices in Vietnam have fallen 7.3% so far this year.
Globally gold fell to a three-month low on Friday and was headed for its steepest weekly decline in over four months as higher energy prices fueled inflation concerns and reinforced US rate hike expectations ahead of next week's Federal Reserve meeting, Reuters reported.
Spot gold fell 0.6% to $3,998.35 an ounce, slipping below the $4,000 mark for the first time since mid-July and touching a session low of $3,975.23.
Bullion has fallen 4% this week, putting it on track for its worst week since June.
U.S. gold futures for December delivery settled 1.3% lower at $4,007.90 per ounce.