The burglar took an iPad, a wallet containing some cash, sunglasses, McIvor's antique pearl earrings and an antique Japanese box that had been a wedding present.
"I just feel stupid," McIvor said. "My husband has told me to keep the windows shut but I've had them open because it has been so hot.
"I thought we'd be fine during the day."
Police have recovered some of McIvor's items and a woman appeared in court on Wednesday charged with several burglaries.
Community services manager Inspector Glyn Rowland warned people to be aware of the risk they took leaving doors and windows open.
"There is an increase in opportunity for these crimes to take place at this time of year.
"So this is a timely reminder that there are steps the public can take to keep their homes and possessions safe."
Auckland District Commander Superintendent Richard Chambers said there were 14 "unsecure dwelling burglaries" in the city between December and January, up from six in the same period last year.