BERLIN — The Royal Palace museum in Dresden, Germany, reopened to the public on Wednesday, except for the rooms known as the Green Vault, where the police continued to hunt for evidence to help them track down the thieves who broke in two days earlier, making off with 11 rare Baroque jewels .

The police said evidence indicated that four thieves had carried out the robbery early Monday, spraying a fire extinguisher in their wake to erase their tracks. The thieves broke an iron gate and a window to enter a room in the Green Vault on the ground floor of the museum.

Among the treasures in the Green Vault — founded by August the Strong, prince-elector of Saxony and King of Poland — were several sets of royal jewels. The thieves used an ax to break the security glass and steal three of them — the “Diamond Rose,” “Diamond” and “Queens’ Jewelry” sets — taking a t otal of 11 entire pieces , parts of two other pieces and several buttons, Dirk Syndram, the director of the Green Vault, said on Wednesday.

“These three sets included diamonds in various cuts that date largely from the time of August the Strong and August III,” Mr. Syndram said in a statement. “They were set between 1782 and 1789.”