| 摘要 |
A stone cluster effect article having substantially parallel front and back faces, comprising a relief pattern of faceted projections on its back face, the front face being unfaceted, the faceted projections comprising close packed prisms or right pyramids with even numbers of sides with an apex angle of between 80º and 100º. The article can comprise jewellery, objets d'art or objets de vertu, or glassware, and the effect is to make the article appear particularly bright. |
