Friday, 4 January 2013

Cushion Cut Diamond

Cushion Cut Diamond Details
The first brilliant cuts were introduced in the middle of the 17th century. Known as Mazarins, they had 17 facets on the crown (upper half). They are also called double-cut brilliants as they are seen as a step up from old single cuts. Vincent Peruzzi, a Venetian polisher, later increased the number of crown facets from 17 to 33 (triple-cut or Peruzzi brilliants), thereby significantly increasing the fire and brilliance of the cut gem, properties that in the Mazarin were already incomparably better than in the rose. Yet Peruzzi-cut diamonds, when seen nowadays, seem exceedingly dull compared to modern-cut brilliants. Because the practice of bruting had not yet been developed, these early brilliants were all rounded squares or rectangles in cross-section (rather than circular). Given the general name of cushion—what are known today as old mine cuts—these were common by the early 18th century. Sometime later the old European cut was developed, which had a shallower pavilion, more rounded shape, and different arrangement of facets. The old European cut was the forerunner of modern brilliants and was the most advanced in use during the 19th century.

Around 1900, the development of diamond saws and good jewelry lathes enabled the development of modern diamond cutting and diamond cuts, chief among them the round brilliant cut. In 1919, Marcel Tolkowsky analyzed this cut: his calculations took both brilliance (the amount of white light reflected) and fire into consideration, creating a delicate balance between the two.[1] Tolkowsky's calculations would serve as the basis for all future brilliant cut modifications and standards.
Cushion Cut Diamond
 Cushion Cut Diamond
 Cushion Cut Diamond
Cushion Cut Diamond
 Cushion Cut Diamond
Cushion Cut Diamond
 Cushion Cut Diamond
Cushion Cut Diamond
Cushion Cut Diamond
 Cushion Cut Diamond
 Cushion Cut Diamond
 Cushion Cut Diamond
Cushion Cut Diamond
 Cushion Cut Diamond
 Cushion Cut Diamond
Cushion Cut Diamond
Cushion Cut Diamond
 Cushion Cut Diamond
 Cushion Cut Diamond
 Cushion Cut Diamond
Cushion Cut Diamond
                    

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