IN-DEPTH FEATURES & LISTS

Occasionally, between current events and posts on single jewels, we dig a little deeper on a certain topic with a feature or an index, a listing of jewels that share a common characteristic. 
What we've covered so far:

The Year(s) in The Queen's Jewels 
At the end of each year, I tally up which brooches were worn most, how many tiara appearances we saw, what new jewels were worn, and more. Previous years in review:
2015
2014
2013
2012

Jewelry Additions from the Royal Gift Lists
In January, the palaces release lists of official gifts received the previous year, and we pore over them to see if any new gems were added to the collection of The Queen and her family members. Lists for the following years have been investigated:
2015
2014
2013
2012

The Hon. Mrs. Ronald Greville bequeathed her jewels to Queen Elizabeth in 1942. Here's who she was...

...and here's her jewelry collection, including an ongoing list of jewels known to have been in the bequest.

The Cambridge Emeralds and the Delhi Durbar Parure
Perhaps Queen Mary's most elaborate parure, including an impressive set of emeralds with a slightly juicy history.

The Jewels of The Crown
Examining the royal replicas in Netflix's series about The Queen's life.
India in The Queen's jewel collection, inspired by The Duke and Duchess of Cambridge's first royal tour of the country.

Index: The Queen's Bejeweled Birthday Presents
What do you get the woman that has everything for her birthday?