| 摘要 |
A ruby (1), one face of which carries items of information appearing in relief and which are metallised at (4), is mounted, as well as a sapphire (2), in a common mount (3). The assembly thus constituted will be mounted on an item of jewellery or on a watch, for example. The information is readable against the light with the aid of a magnifying apparatus, such as a watch maker's microscope or a magnifying glass, for example. The information is indelible and withstands high temperatures. This information relates to the identity of persons or animals or may be of any other nature as required. <IMAGE>
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