| 摘要 |
FIELD: individual supplies. ^ SUBSTANCE: oval-cut diamond features girdle of elliptic or near-elliptic shape, crown above girdle with octagonal table facet at the crown top, and pavilion below girdle. Girdle side ratio (b/a) is 0.6 or more, where a is radius by longer axis and b is radius by shorter axis. Two main facets of pavilion opposing against central axis have a couple of main crown facets or a couple of star facets positioned opposite to two main pavilion facets over the girdle. Two main pavilion facets, two main crown facets or star facets and table facet have common vertical plane in these facets. ^ EFFECT: enhanced glittering in reflected light irradiated over table facet and crown facets. ^ 14 cl, 33 dwg, 4 tbl, 6 ex |
