Sharpening sheath adapted to receive a knife, and combination of such a sheath and a knife

A sharpening sheath, configured to receive a knife to be sharpened or stored, comprising:

• a cavity for receiving a blade;
• an access opening at one end of the cavity;
• and
• a sheath comprising a base, an upper part configured to receive a back of the blade, and a lower part comprising a sharpening device configured to be applied to a cutting edge of the blade when the blade is inserted or removed from the sheath, the base and the upper part defining a lower extent and an upper extent of the cavity, respectively,
• wherein the sharpening device is supported by an arm comprising a first longitudinal end rotatably mounted on a stand so as to pivot around a first axis, the arm configured to be biased towards the upper part, and wherein the sharpening device is rotatably mounted at a second longitudinal end of the arm and suspended from the second longitudinal end of the arm, and
• wherein the sharpening device is mounted on the arm so as to pivot around a second axis of the arm, wherein a center of gravity of the sharpening device is positioned between the second axis and the base of the sheath.