A decorative article (100) having an observed colour effect that is changeable depending on observer (200) viewing angle, the article comprising: a decorative element (110) comprising a front side (114) facing a forward direction and a back side (112) opposite the front side facing a rearward direction, wherein the back side comprises a back surface (113) having a first region (122) and a second region (124) surrounding the first region; a first coating (132) arranged on the first region of the back surface, the first coating causing a first colour effect (102); and a second coating (134) arranged on the second region of the back surface, the second coating causing a second colour effect (104) that differs from the first colour effect.

A clip (100) for being strung on a bracelet and/or a necklace, said bracelet or necklace comprising an elongate member with a flat cross-sectional shape and with a first substantially flat major surface and a second substantially flat major surface.

A clip (100) for being strung on a bracelet and/or a necklace, said bracelet or necklace comprising an elongate member with a flat cross-sectional shape and with a first substantially flat major surface and a second substantially flat major surface.

A fastening device includes a case, a spool and a knob. The case includes a housing and a base. The housing includes a receiving space and two side holes communicated with the receiving space. The base is detachably connected to the housing. The base includes a continuous wall, and the continuous wall surrounds a lower edge of the housing after the base is connected to the housing. The spool is received in the receiving space and configured for a lace passing through the side holes to be wound therearound. The knob is disposed on the case. Rotating the knob relative to the case in a fastening direction causes the spool to rotate in the fastening direction for fastening the lace.

Provided are a silver jewelry article formed using pure silver, which has high Vickers hardness and prohibit the occurrence of discoloration and its method. Disclosed are a silver jewelry article and its method, wherein the Vickers hardness is adjusted to 60 HV or higher, and when the height of the peak of 2θ=38°±0.2° by an XRD is designated as h1, and that of 2θ=44°±0.4° is designated as h2, h2/h1 is adjusted to 0.2 or greater.

Provided are a silver jewelry article formed using pure silver, which has high Vickers hardness and prohibit the occurrence of discoloration and its method. Disclosed are a silver jewelry article and its method, wherein the Vickers hardness is adjusted to 60 HV or higher, and when the height of the peak of 2θ=38°±0.2° by an XRD is designated as h1, and that of 2θ=44°±0.4° is designated as h2, h2/h1 is adjusted to 0.2 or greater.

A decorative composite body includes a glass body and a plastic partly enclosing the glass body, wherein part of the surface of the glass body is arranged on the outside of the decorative composite body, wherein at least two adjacent glass and plastic areas arranged on the outside of the composite body are ground in the composite state, wherein areas of the glass body adjacent to the plastic are at least partly mirrored.

The invention proposes a decorative object comprising a body and a decorative element fastened in a reversible manner to the body, enabling change of decorative element easily. The decorative object comprising a system for reversibly fastening the decorative element on the body comprises: on the decorative element, a first locking stud on which is pivotably mounted a rigid stem; a second locking stud provided with a means for reversibly locking the stem in fastening position; on the body: a first locking orifice intended to receive the first locking stud of the decorative element; a second locking orifice intended to receive the second locking stud of the decorative element; a bearing surface being arranged, in fastening position, between the two locking studs, and on which the stem is intended to bear forcibly when it is locked in fastening position by the means for reversibly locking the second locking stud.