'Unseen' Pop Art, 'royal' pearl, unveiled at London art fair June 28, 2013 -- Updated 1326 GMT (2126 HKT) 'Puzzle Portrait' 1978 by Roy Lichtenstein. Exhibited at Masterpiece by Geoffrey Diner Gallery. A rarely seen painting by Roy Lichtenstein is to go on display at London's Masterpiece art fair Created in 1978, the "Puzzle Portrait" has been kept out of the public eye for 30 years Also on display is a super-sized pearl one owned by England's Queen Mary I (CNN) -- A painting by pop artist Roy Lichtenstein, which has not been seen in public for more than 30 years, and a massive pearl once owned by Mary Tudor have been unveiled as the highlights of London's Masterpiece art fair. The artwork, "Puzzle Portrait," was created by Lichtenstein (1923-1997) in 1978, before being sold directly to its current owner, who kept it out of the public eye for decades. The super-sized pearl, which weighs 64.5 carats (258.12 grains), once belonged to England's Mary I (1516-1558). The monarch was painted wearing it in several portraits, now in the Prado in Madrid and the National Portrait Gallery in London. Read: Amsterdam's Rijksmuseum reopens "It is a true natural masterpiece," said Nazy Vassegh, the event's CEO. It is one of the world's largest natural pearls, and on top of that it has royal provenance. Pearls of this heritage are very rare. It is part of history. The jewel disappeared in the late 16th century, and was missing for hundreds of years, before being rediscovered in 2004; following extensive research, it has only recently been identified as the Mary Tudor pearl. Nazy Vassegh Interactive: Rembrandt's 'Night Watch' explained Organizers of the fair say the pearl and the pop art are likely to be among the most sought-after pieces for sale at Masterpiece 2013. The only fair of its kind taking place at the height of London's arts and social season, the show is held in a purpose-built pavilion in the grounds of the Royal Hospital at Chelsea. Held annually since 2010, Masterpiece offers shoppers and curious visitors the chance to get up close to -- and even take home -- museum-quality art and artifacts. More than 160 dealers, galleries and workshops will display antique furniture and classic cars, precious jewelery, ancient sculptures and contemporary video installations. Read: Finding a lost Leonardo "The idea is that there is a bit of everything, but that it is all pretty special," explained Vassegh. We have works from the 6th century B.C. and even earlier, right through to a Bill Viola, and everything is of an extremely high quality. Each work has been vetted by one of 26 committees of experts, to ensure the highest standards across disciplines, and some of the biggest names in art, from Albrecht Duerer and Nicholas Hilliard to Pablo Picasso and Joan Miro will be on view. Note: Masterpiece London takes place in the grounds of the Royal Hospital Chelsea from Thursday 27 June until Wednesday 3 July. Follow the fair on Twitter @MasterpieceLndn #MPL13 Arts and Culture April 12, 2013 -- Updated 1508 GMT (2308 HKT) Amsterdam's Rijksmuseum is reopening after a massive 10-year rebuild. Get up close to its most treasured possession with our interactive. April 11, 2013 -- Updated 1056 GMT (1856 HKT) Thieves have forced Paris' Louvre museum to close, but an art heist was not to blame. Instead staff walked out in protest at pickpockets. May 2, 2013 -- Updated 1036 GMT (1836 HKT) A three minute jazz record was enough to cast a spell on a wealthy European heiress who became determined to meet the artist behind the tune. April 12, 2013 -- Updated 1102 GMT (1902 HKT) Artist Zao Wou-ki, widely regarded as one of the foremost Chinese painters of the 20th century, has died at the age of 93. April 11, 2013 -- Updated 0942 GMT (1742 HKT) Phallic good luck charms, an amber gladiator amulet and wooden buildings are among a trove of Roman artifacts found in London's financial district. April 10, 2013 -- Updated 1213 GMT (2013 HKT) Leading philanthropist and cosmetics tycoon Leonard Lauder offers to donate 78 Cubist works to the New York Metropolitan Museum of Art. Zambia's Barefeet Theatre uses performing arts to engage with street children, who have who have suffered through poverty and drug use. March 20, 2013 -- Updated 0047 GMT (0847 HKT) With her glossy hair, exotic outfit and ruby-red pouting lips, she's every inch the classic pin-up... except, that is, for that greenish-blue skin. March 20, 2013 -- Updated 0121 GMT (0921 HKT) Seoul-born, Japanese architect Toyo Ito is this year's recipient of he industry's most coveted prize. Take a tour of some of his best buildings. March 18, 2013 -- Updated 1840 GMT (0240 HKT) A mystery portrait donated to a British heritage charity has been identified as a work by Rembrandt van Rijn -- worth more than $30 million.