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

The Rosser Reeves Ruby, Weighing 138.7 carat , is one of the world's largest and finest star rubies.  This Sri Lankan stone is renowned for its great color and well-defined star pattern.  The stone is named after Advertising mogul Rosser Reeves who pioneered his industry.  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.  Rosser donated the piece to the Smithsonian in 1965, carried it around as a lucky stone, referring to it as his baby.  He often stated that he had acquired the stone at an auction in Istanbul in the mid-1950s.  He actually bought the stone from Robert C. Nelson Jr. of New York City who was acting on behalf of Firestone & Parson of Boston.  Firestone & Parson were selling the stone for Mr. Paul Fisher of New York.  Mr. Robert Fisher, Paul's father, had bought the ruby at an auction in London in 1953.  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.  The repolishing also helped to center the stone's star.  Articles in the New York World-Telegram and The Sun in 1953 mentioned this fabulous gemstone.  This incredible stone is still located in the Smithsonian and is proudly displayed for all to see. <SEP> The Kensington Runestone is a 202 lb slab of greywacke covered in runes on its face and side. <SEP> Kensington is a city in Douglas County, Minnesota, United States.  The city is notable in Minnesota history for being the place where the famous, if questionable, Kensington Runestone was first displayed.  The population was 292 at the 2010 census.  The stone tablet may indicate that Scandinavians had come to Minnesota in the 14th century.  It is now at a museum in nearby Alexandria, Minnesota. <SEP> The Nigg Stone is an incomplete Class II Pictish cross-slab, perhaps dating to the end of the 8th century.  The stone was originally located at the gateway to the grounds of the parish church of Nigg, Easter Ross.  It is one of the finest surviving Pictish carved stones, and one of the most elaborate carved stones surviving from early medieval Europe.  It is now displayed, restored to its original proportions, in a room inside the parish church (open in summer; key kept locally).  It bears an elaborately decorated cross in high relief on the 'front' and a figural scene on the reverse.  This scene is extremely complicated and made more difficult to interpret by deliberate defacement.  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.  Scholars interpret the scene as representing a story of the biblical King David.  The carvings on the cross side show close similarities to the contemporary high crosses of Iona.  These works may indeed have been created by the same 'school' of carvers, working for different patrons.  The stone was shattered in the 18th century.  The upper and lower parts were crudely joined together using metal staples (now removed), and the shattered intervening part was discarded.  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'.  This small fragment shows most of the 'Pictish beast' symbol, and was preserved in Tain Museum, until being reattached during a restoration in 2013.