As part of Her Majesty’s Diamond Jubilee celebrations, a central weekend of events was planned. One of such events was the Diamond Jubilee concert at Buckingham Palace
where various acts performed for The Queen, Royal Family, United Kingdom and the world.
At the end of the concert, Her Majesty, Queen Elizabeth II took to the stage and was presented the crystal-glass Diamond Jubilee crystal by Pageantmaster of The Queen’s Diamond Jubilee Beacons Bruno Peek.
Her Majesty then removed from the 22 carat gold crown which was surrounding it and used it to light the last of over 4,000 beacons which were lit all over the globe in celebration.
For more on the crystal, see this YouTube video. (Poor quality but excellent information).