|Queen Mary and many, many diamond necklaces|
The Coronation Necklace would also fall under this category, with the Lahore pendant removed.
Queen Alexandra's Collet Necklace
|Queen Alexandra wears the necklace on a velvet choker|
The Duchess of Teck's Collet Necklace
|Queen Mary (left), and Queen Elizabeth (right), both wearing the Teck necklace as the longest necklace|
Queen Elizabeth's Coronation Necklace
|Queen Elizabeth (left, with the Coronation Necklace), and the Duchess of Cornwall|
Like pearls, these necklaces are devilishly hard to tell apart when in use. Thus, I will group those that do not seem to be the Coronation Necklace here.
19 November 2012: Royal Variety Performance
27 July 2012: Opening Ceremony of the London Olympics
2010: State Visit to the UAE and Oman
2010: Visit to Canada
2008: State Visit from France (Queen Elizabeth's, on the Duchess of Cornwall)
Photos: Royal Collection/PA