| 摘要 |
Gemstone of natural diamond, characterised in that the gemstone (1) has two parallel faces (2-3, 4-5) in which the geometric plane that coincides with the aforementioned faces defines the volume of the gemstone (1), and from which a number of facets start, and each facet is parallel to an opposite facet or parallel to a connecting edge (6) of two other facets. |
