This was the second time this year there had been an attempted robbery at the store this year.
The man runs away from the store when the alarms are activated.
In January, several men also attempted to break through the window but were also unsuccessful.
Pearce co-owned the store with his wife as well as another jewellery store in Te Puke which he said had an attempted break-in two months ago, costing $5000 to replace the window.
"They smashed the hell out of the window."
A police spokeswoman said an attempted burglary was reported on Tutanekai St about 6.35am this morning, although the attempt had been made earlier.
No arrests have been made and inquiries are ongoing, she said.