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The Orlov is a rarity among historic diamonds, for it retains its original Indian rose-style cut (see diamond cut). Its colour is widely stated as white with a faint bluish-green tinge. Data released by the Kremlin gives the Orlov's measurements as 32 millimetres x 35 millimetres x 21 millimetres, its weight being 189.62 carats (37.924 g). The ...
The Jacob Diamond, also known as the Imperial or Victoria Diamond, is a colourless diamond from India (or from the Golconda mines) [1] ranked as the fifth-biggest polished diamond in the world. [ 2 ] [ 3 ] The last nizam of the Hyderabad State , Mir Osman Ali Khan , found the diamond in the toe of the shoe of his father ( Mahboob Ali Khan ) at ...
A diamond cut is a style or design guide used when shaping a diamond for polishing such as the brilliant cut. Cut refers to shape (pear, oval), and also the symmetry, proportioning and polish of a diamond. The cut of a diamond greatly affects a diamond's brilliance—a poorly-cut diamond is less luminous.
The cut of the diamond is technically called a lasque cut; typical of Indian diamonds. [1] A groove has been cut round the stone to accommodate the thread by which it was formerly worn round the neck.
The diamond cut planning stage is a complex process that requires the cutter to work with unique rough stones. Very often, the location of the inclusions in a rough stone will determine the type of shape to which a diamond may be cut. For economic reasons, most diamonds are cut to retain weight instead of maximizing brilliance. [2]
An example of this is the marquise cut diamond which was popular in the 1970s to 1980s. In later decades, jewelers had little success in selling this shape in comparison to other shapes like the oval or pear shape. [citation needed] The marquise can be cut into an oval diamond by any diamond cutter with a loss of 5 to 10% in total weight.
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The diamond further was characterised as a "rudely faceted, lustreless mass." Illustrations in Herbert Tillander's book "Diamond Cuts in Historic Jewelry – 1381 to 1910" show it as being a semi-triangular moghal cut with a plateau top, similar looking to the 115-carat Taj-E-Mah Diamond which resides in the Iranian Crown Jewels.