Rosette assembly for a door, where the Rosette assembly comprises two stop elements (11, 11') that can be attached to both the sides of the door and can be attached to each other with at least one fastening device, where the fastening device consists of at least the fist or the second fastening element (30, 40), ▪ where at least the first fastening element is attached on the backside of a stop element (11, 11') and at least the second fastening element is attached on the backside of the other stop element (11, 11'), ▪ where at least the first fastening element has the form of a bolt and in which the second fastening element can be fitted, - where at least the second fastening element has a pick-up element, in which at least the first fastening element can be inserted, where the second fastening element has an axial bore or a sleeve for picking up the first fastening element and - where the pick-up element is reversibly formable by inserting at least the first fastening element so that at least the first fastening element can be force-fitted in the pick-up element, characterised in that the first fastening element has a bolt thickening for fitting in the pick-up element at a front end, - in which it mainly concerns the formation of the section of the first fastening element, - where the bolt thickening is made of two opposite bulges, which project across the circular or cylindrical extent of the fastening element - as well as two recesses in the form of flat sides behind the extent of the fastening element, - where the first fastening element in the remaining areas retains its circular section at the front end and between the bolt thickening and the edge of the stop element, and - where the opposite bulges are measured such that the dimension of their vertex is greater than the circular inner diameter of the recess of the second fastening element, in which the first fastening element is inserted for assembly. ▪ where at least the first fastening element is attached on the backside of a stop element (11, 11') and at least the second fastening element is attached on the backside of the other stop element (11, 11'), ▪ where at least the first fastening element has the form of a bolt and in which the second fastening element can be fitted, - where at least the second fastening element has a pick-up element, in which at least the first fastening element can be inserted, where the second fastening element has an axial bore or a sleeve for picking up the first fastening element and - where the pick-up element is reversibly formable by inserting at least the first fastening element so that at least the first fastening element can be force-fitted in the pick-up element, characterised in that the first fastening element has a bolt thickening for fitting in the pick-up element at a front end, - in which it mainly concerns the formation of the section of the first fastening element, - where the bolt thickening is made of two opposite bulges, which project across the circular or cylindrical extent of the fastening element - as well as two recesses in the form of flat sides behind the extent of the fastening element, - where the first fastening element in the remaining areas retains its circular section at the front end and between the bolt thickening and the edge of the stop element, and - where the opposite bulges are measured such that the dimension of their vertex is greater than the circular inner diameter of the recess of the second fastening element, in which the first fastening element is inserted for assembly. - where at least the second fastening element has a pick-up element, in which at least the first fastening element can be inserted, where the second fastening element has an axial bore or a sleeve for picking up the first fastening element and - where the pick-up element is reversibly formable by inserting at least the first fastening element so that at least the first fastening element can be force-fitted in the pick-up element, - in which it mainly concerns the formation of the section of the first fastening element, - where the bolt thickening is made of two opposite bulges, which project across the circular or cylindrical extent of the fastening element - as well as two recesses in the form of flat sides behind the extent of the fastening element, - where the first fastening element in the remaining areas retains its circular section at the front end and between the bolt thickening and the edge of the stop element, and - where the opposite bulges are measured such that the dimension of their vertex is greater than the circular inner diameter of the recess of the second fastening element, in which the first fastening element is inserted for assembly.