Question: Kensington is notable for being where the slab of stone weighing how much was displayed?

<P0-S0> The Kensington Runestone is a 202 lb slab of greywacke covered in runes on its face and side. <SEP> <P1-S0> The Rosser Reeves Ruby, Weighing 138.7 carat , is one of the world's largest and finest star rubies. <P1-S1>  This Sri Lankan stone is renowned for its great color and well-defined star pattern. <P1-S2>  The stone is named after Advertising mogul Rosser Reeves who pioneered his industry. <P1-S3>  And whose techniques were very popular in the 1950s and 1960s,and gave a successful boost to the election campaign of Dwight D. Eisenhower in 1952, which led to his election as the 34th President of the United States of America. <P1-S4>  Rosser donated the piece to the Smithsonian in 1965, carried it around as a lucky stone, referring to it as his baby. <P1-S5>  He often stated that he had acquired the stone at an auction in Istanbul in the mid-1950s. <P1-S6>  He actually bought the stone from Robert C. Nelson Jr. of New York City who was acting on behalf of Firestone & Parson of Boston. <P1-S7>  Firestone & Parson were selling the stone for Mr. Paul Fisher of New York. <P1-S8>  Mr. Robert Fisher, Paul's father, had bought the ruby at an auction in London in 1953. <P1-S9>  At the time the ruby then weighed just over 140 carat , but was very heavily scratched, and a few carats were removed in the repolishing. <P1-S10>  The repolishing also helped to center the stone's star. <P1-S11>  Articles in the New York World-Telegram and The Sun in 1953 mentioned this fabulous gemstone. <P1-S12>  This incredible stone is still located in the Smithsonian and is proudly displayed for all to see. <SEP> <P2-S0> The Nigg Stone is an incomplete Class II Pictish cross-slab, perhaps dating to the end of the 8th century. <P2-S1>  The stone was originally located at the gateway to the grounds of the parish church of Nigg, Easter Ross. <P2-S2>  It is one of the finest surviving Pictish carved stones, and one of the most elaborate carved stones surviving from early medieval Europe. <P2-S3>  It is now displayed, restored to its original proportions, in a room inside the parish church (open in summer; key kept locally). <P2-S4>  It bears an elaborately decorated cross in high relief on the 'front' and a figural scene on the reverse. <P2-S5>  This scene is extremely complicated and made more difficult to interpret by deliberate defacement. <P2-S6>  Among the depictions are two Pictish symbols: an eagle above a Pictish Beast, a sheep, the oldest evidence of a European triangular harp, and hunting scenes. <P2-S7>  Scholars interpret the scene as representing a story of the biblical King David. <P2-S8>  The carvings on the cross side show close similarities to the contemporary high crosses of Iona. <P2-S9>  These works may indeed have been created by the same 'school' of carvers, working for different patrons. <P2-S10>  The stone was shattered in the 18th century. <P2-S11>  The upper and lower parts were crudely joined together using metal staples (now removed), and the shattered intervening part was discarded. <P2-S12>  Part of the missing fragment was recovered in 1998 by Niall M Robertson, in the stream which runs below the mound on which the churchyard is set, having probably been thrown down the bank at the time the slab was 'repaired'. <P2-S13>  This small fragment shows most of the 'Pictish beast' symbol, and was preserved in Tain Museum, until being reattached during a restoration in 2013. <SEP> <P3-S0> Kensington is a city in Douglas County, Minnesota, United States. <P3-S1>  The population was 292 at the 2010 census. <P3-S2>  The city is notable in Minnesota history for being the place where the famous, if questionable, Kensington Runestone was first displayed. <P3-S3>  The stone tablet may indicate that Scandinavians had come to Minnesota in the 14th century. <P3-S4>  It is now at a museum in nearby Alexandria, Minnesota.