The Orlov CZ Diamond
The Orlov CZ Diamond made of Cubic of Zircon
The Orlov (sometimes spelled Orloff) is a large diamond of Indian origin, currently displayed as a part of the Diamond Fund collection of Moscow's Kremlin Armoury. It is described as having the shape and proportions of half a chicken's egg. In 1774, it was encrusted into the Imperial Sceptre of Russian Empress Catherine the Great.
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