System for manufacturing a bevelled stone, particularly for a horological movement

A system for manufacturing a stone using a method for manufacturing a beveled stone for a timepiece, the method including

• producing a precursor from a mixture of at least one material in powder form with a binder,
• pressing the precursor to form a green body, using a top die and a bottom die, the bottom die comprising a protruding rib,
• sintering said green body to form a body of a future stone in said at least one material, the body comprising a peripheral face and a bottom face provided with a groove, and
• machining the body including planing the peripheral face up to the groove, such that an inner wall of the groove forms at least a flared part of the peripheral face of the stone, said system comprising:
• a device configured to press the precursor, the device comprising the top and bottom dies arranged movable in a casing forming the green body of the future stone by pressing the top and bottom dies, the bottom die comprising the protruding rib and a punch, and the top die not comprising any protruding ribs, wherein
• the protruding rib of the bottom die forms a closed curve in plan view and is configured to form a planar surface comprising the flared part of the peripheral face of the stone and to define an outer periphery of the stone, and
• the punch is located within and separated from the closed shape curve of the protruding rib of the bottom die.