Pavilion
The lower portion of a faceted gemstone, below the girdle. The pavilion angle is critical to light return: too shallow or too deep causes light to leak out rather than reflecting back to the viewer.
الفئة:
Gemology
The lower portion of a faceted gemstone, below the girdle. The pavilion angle is critical to light return: too shallow or too deep causes light to leak out rather than reflecting back to the viewer.