I just found this. http://usatoday30.usatoday.com/news/offbeat/2009-08-27-moon-rock-museum_N.htm "The Apollo 11 crew were on a goodwill tour, and on their visit to the Netherlands the AMERICAN AMBASSADOR to the country presented a gift of a piece of petrified wood to the then Prime Minister. THEY knew it was petrified wood, and the PM knew it was petrified wood. Such trinkets are common in the American Southwest, and not usually found many places elsewhere on Earth. So, it was merely a representative gift from the country of the United States, not ever presented as a piece of the Moon! None of the actual Lunar samples that were gifted to foreign nations and individuals were anywhere near the size of that fist-sized rock"! The actual Lunar gifts were small grains of sand (moon dust), and were encased in Lucite plastic, and mounted on commemorative plaques.