Persian turquoise is extensively found in Iran's northeastern city of Neyshabur, located about 150 kilometers west of the city of Mashhad in Khorasan Razavi Province, and dates back to 4,000 BCE.

Tachin, a dish of baked saffron rice, at Turquoise Persian Grill in Roslyn Heights. Credit: Newsday/Erica Marcus Virtually every dish here comes with a big pile of perfectly cooked basmati rice ...

Among the many varieties of turquoise, there are five notable kinds. From the mountains of Khorasan Province, Iran Aristotle, Pliny the Elder and Marco Polo all mentioned Persian turquoise in ...

The stone has been mined for thousands of years and used for adornment by many civilizations, including the Egyptian, Persian ... The G.I.A. does not grade turquoise or see many examples of ...

At the Smithsonian’s National Museum of Natural History, visitors can see pieces of this type of turquoise, called Persian turquoise, in a diadem once owned by Napoleon’s second wife ...

and is completed with Persian turquoise stones, which are known for their high quality. Originally a kokoshnik, Elizabeth had it altered by removing the top row of diamonds. Speaking about the ...

As the daughter of King George VI and the sister of Queen Elizabeth II, Princess Margaret wore some enviable jewellery over her lifetime. Margaret's best-known jewel is perhaps her Poltimore Tiara ...