What does the girdle of a gemstone refer to?

The girdle of a gemstone is accurately described as the boundary between the crown and the pavilion. It is the critical area where the upper part of the stone, known as the crown, meets the lower part, called the pavilion. This junction is significant in gemstone cutting, as it serves not only as a visual transition between the two parts but also plays a role in how the gemstone is set in jewelry. The girdle can be faceted, polished, or left in its natural state, and its proportion can affect the overall appearance and brilliance of the stone. Understanding the girdle's position helps in assessing the cut quality and the gem's overall symmetry.