Roughly half a million dollars worth of jewelry was allegedly stolen from Olivier Giroud‘s Los Angeles-area home during a burglary earlier this month, TMZ Sports has learned.

Law enforcement tells us … the break-in was reported to cops by the soccer star’s wife on Feb. 5 — after she had discovered a smashed window at their property.

We’re told Giroud’s partner noted several pricey items were taken in the burglary — including over 10 men’s watches. She told officers the value of the missing stuff was close to $500,000.