Bevel polished jewel, particularly diamond, has board, four bottom section facets, eight other bottom section facets and eight third bottom section facets, where four bottom section facets form bottom section facet angle
摘要
<p>The bevel polished jewel has a board (100), four bottom section facets (10), eight other bottom section facets (20) and eight third bottom section facets (30). The four bottom section facets form a bottom section facet angle in the range of 45 degree to 60 degree with the board. The eight other bottom section facets form another bottom section facet angle in the range of 45 degree to 60 degree with the board. The third bottom section facets form a third bottom section facet angle in the range of 40 degree to 55 degree with the board.</p>
