The vault-shaped cut originated in the 16th century, and its cut looks like a roof.
For diamonds that are not standard octahedrons, sharp cuts and table cuts are powerless. In the middle of the 15-16th century, the appearance of the rose cut was a leap in the development of diamond cuts. Among them, the Dutch rose cut was rep
resented by the symmetrical distribution of flat bottom, vault and triangular facets, which is pleasing to the eye. . The rose-cut shape is suitable for small and flat crystals and can take good care of it. Its disadvantage is that it lacks fire color, but its rich and symmetrical facets are still very attractive. Until the 19th century, many small rose cuts still existed in diamond jewelry.
Rose-cut shapes basically have a foil bottom scale, which is used to increase the light reflection inside the diamond and improve the brightness.
Rose cuts are usually round, triangular, or drop-shaped, but there are also kite-shaped ones.
Until the early 16th century, gems were generally worn by men and were a symbol of men's status. So we can see a lot of gem jewelry from self-portraits of that period.
By the late 17th century, more diamonds were set in silver rings. This was done to increase the penetration of white light and enhance the beauty of diamonds.
There are still many portrait diamonds in Europe. Some flat diamonds are used to cut thin and transparent flake diamonds and cover the portraits to form a unique beauty.
Table-shaped cuts gradually evolved, developing single-polyhedral cuts, and then from single-polyhedral cuts to double-polyhedral cuts. There are also two variants of the double polyhedral cut: the British star cut and the British square cut. The Venetian diamond polishing craftsman Paluz transformed the 34 faceted double faceted cut into a 58 faceted triple faceted cut, which increased the brightness and sparkle of the diamond. This kind of cut crown at the time Both the part and the pavilion are higher and deeper than modern cuts.
At the beginning of the 18th century, brilliant cuts began to appear. Cutting and polishing the girdle of a diamond was a time-consuming and laborious task, and it also caused a lot of loss in the weight of the diamond. Therefore, most of the octahedron and dodecahedron rough stones were polished into a cushion shape. Most of the cushion-shaped diamonds of this period have a deeper crown, suggesting the shape of the rough stone. Unlike us now uniformly polishing a large number of diamonds into standard round diamonds, at that time we paid more attention to not destroying the original ecological charm of the rough stone as much as possible.
Platinum was not popular in the jewelry industry in the 19th century, so most diamonds were set in gold, and silver was often used to increase brightness and whiteness. By the 20th century, platinum with a high melting point became popular as a diamond inlay material, replacing silver, making diamonds more white and shining (but due to the low hardness and easy deformation of platinum, we now use white K gold instead of platinum for inlaying. diamond).
In the late 19th century, the development of electric power technology improved the polishing efficiency and obtained a more perfect round diamond cut. Prior to this, the perfect round diamond was considered a "dream cut". At this time, the diamond octahedral crystal is usually cut in half and polished into a cut with a larger table surface and a shallower crown. Although this will cause the dispersion and fire color to become weaker, it can retain a larger weight, so it was the mainstream cutting at the time. work.
