(via Diamond Cuts in Historic Jewelry:1381-1910) Herbert Tillander writes:
No trace of the origin or history of the Dresden Renaissance ring has ever been found. Its main feature is the pointed diamond weighing about 2 ct. This has always been accepted as being fairly normal Point Cut, but if it were so its disproportionate height would have involved an unrealistic reduction in the width.
The exceptionally large internal reflections also suggested to me that the stone merited further investigation. Experiments with rock crystal finally revealed that the gem could only have been produced from a triangular macle or ‘was’. The proportions of the actual diamond are quite remarkable, with its high 60º crown and very shallow 11º pavilion.
No comments:
Post a Comment