Abstract: An earring force tester for clip-on type earrings detects the spring force of an earring and provides a visual output signal including whether the spring force is above (too tight), below (too loose) or within an acceptable range of force. The output signals are different colored LEDs. The lower and upper boundaries of the range can be adjusted such as to calibrate the device.

Abstract: A cut cornered mixed-cut square gemstone comprises a step-cut crown, with two steps and a table, a girdle and a pavilion. The crown and pavilion are substantially square with four equal sides, and corners about 1/3 the length of the sides. The pavilion sides and corners are defined by eight rib lines which extend substantially continuously from the girdle to a culet. Each pavilion side and corner has four facets, including a lower girdle star facet, two lower girdle facets and a lower bezel facet. The gemstone has the classic elegance of a step cut in the crown and attempts to achieve the good dispersion of a brilliant cut in the pavilion.

Abstract: A timepiece for simultaneously indicating the time for at least two time zones, the timepiece comprising a watch movement; a dial, an hour indicating hand and a minute indicating hand, the hour indicating and minute indicating hands being mounted for rotating above the dial, for indicating the time for a first time zone; a first setting mechanism for the hands, first driving means for connecting the hour indicating and minute indicating hands to the watch movement, so as to rotate the hands for indicating the time over 12 hours; a first rotatable disc for indicating the time over 24 hours; second driving means for connecting the first rotatable disc to the watch movement, so as to rotate the disc of one revolution in 24 hours; a second rotatable disc for indicating the time zones; a second setting mechanism for the first and second rotatable discs, the mechanism comprising first setting means operable for setting the angular position of the first rotatable disc, independently of the rotation thereof by the se