Connecting ring for a timepiece dial, plate and timepiece dial, assembly method

A dial for a timepiece, the dial comprising a dial plate assembled with a connecting ring,

• the dial plate comprising:
• a lower first surface intended to be positioned on the inward side of a timepiece,
• an opposite upper second surface intended to be visible,
• a second portion connecting the first and second surface and forming a peripheral contour of the dial plate,
• wherein the second portion comprises at least a third surface that is inclined with respect to the lower first surface and/or with respect to the upper second surface of the dial plate, the at least one third surface being designed to collaborate with connecting elements that are plastically deformable and intended to come to bear against the at least one third surface, and
• the connecting ring comprising a connecting first portion provided with connecting elements that are plastically deformable and that bear against the second portion formed on the dial plate,
• wherein a ratio of a Vickers hardness of a material of which the dial plate is made to a Vickers hardness of a material of which the connecting ring is made is greater than 3.