What efforts were made to find Mme Forestiers necklace?

Mathilde was devastated when she got home and realized she had misplaced her friend's diamond necklace. She experienced shock, and so did Mr. Loisel. They looked through the dress's folds and the wrap for the necklace but were unsuccessful. Mr. Loisel changed into his clothing and returned on foot to the search. He returned the following morning with no positive outcomes. He looked everywhere there could have been even the tiniest glimmer of hope. He was disappointed when he arrived back in the morning.