With speculation hotting up about the contents of the final series of The Crown, it seems increasingly likely the drama will cover the early years of the Kate and William romance.
And with the courtship and engagement came some beautiful jewellery – a star turn in its own right.
Which pieces will we see when the show finally airs (the episodes are available from November 16, with the second tranche coming on December 14.)?
Here, jewellery expert Neil Dutta from Angelic Diamonds has lists some of Catherine’s more notable jewels in the order they were given her by Prince William.
Rose Gold Victorian Ring
One of the first gifts from William was a rose gold band, fitted with birthstones: pearls for William and garnets for Catherine.
Kate received the understated LeVian Victorian band while they were studying at St Andrews, and she was photographed wearing it at her graduation ceremony in the summer of 2005.
The Princess of Wales has not been spotted wearing it since the announcement of her engagement.
Princess Diana’s Engagement Ring
Kate’s engagement ring is a sentimental choice from Prince William, who gave his future wife the ring his late mother had worn.
It is a brilliant blue Ceylon, oval-shaped sapphire set within an 18k white gold band, surrounded by a cluster of 14 round solitaire diamonds.
Princess Diana had chosen the ring from a selection presented by the Crown jewellers, Garrard of Mayfair upon her engagement to Prince Charles.
William proposed to Kate in Kenya in 2010 and described the ring saying, ‘It’s my mother’s engagement ring, and it’s very special to me, as Kate is very special to me now as well. It was only right the two were put together.
‘It was my way of making sure mother didn’t miss out on today and the excitement and the fact that we’re going to spend the rest of our lives together.’
While the ring, one of the most famous in the world, is now priceless it originally cost £28,500 in 1981. Jewellers estimated that it has since increased in value each year by 23 per cent, meaning it is worth up to £330,000 today.
Engagement Earrings
Prince William followed that by presenting his future bride with a dazzling set of sapphire and diamond earrings.
These, too, had belonged to his mother – a wedding gift to Princess Diana, part of a suite of jewels given by Crown Prince Fahd of Saudi Arabia.
The earrings feature one drop with an oval sapphire set in the middle, surrounded by solitaire diamonds. These earrings have made multiple appearances, and it’s believed they could be worth up to £303,810 today!
Having reportedly been given these earrings by her husband to match her engagement ring, Kate later had the rings altered into a drop style.
She has worn them often through the years.
Welsh Gold Wedding Band
In keeping with a royal tradition dating back nearly a century, Kate’s wedding ring was crafted from a piece of Welsh gold by Mayfair-based jewellers Wartski.
The had been Prince William by his grandmother Queen Elizabeth following the announcement of his engagement.
This simple gold band complements her bold engagement ring – and is almost hidden by the sapphire, in fact – a private token of their love and commitment.
Some might recall that the Prince had a slight difficulty fitting the ring onto his new wife’s finger on his wedding day.
Because she was worried that the ring might slip off due to her having lost some weight in the run-up, Kate asked the royal jeweller to make the band smaller, and it seemed they did their job almost too well.
Christmas Earrings
To celebrate their first official Christmas together as husband and wife, William surprised Catherine with a pair of amethyst earrings.
The earrings featured 5k oval, green amethyst stones, set into 18k gold.
Unusually, the amethyst stones in these earrings are green rather than purple – a choice said to represent harmony, love and balance.
Designed by one of Kate’s favourite designers, Kiki McDonough, these are one of the royal’s more conservatively priced pieces, priced at around £2,600.
Catherine’s Eternity Ring
The third of the three rings on the Princess’ wedding finger is the eternity ring.
The diamond eternity ring was a present to Catherine following the birth of her first child, George .
The ring is crafted from 18k white gold, with bright, brilliant 0.23k diamonds set within the band by Annoushka. It often sits alongside her wedding ring, so you have likely spotted the jewellery.
What’s more surprising about this ring is that you can actually get the same ring for yourself from the Annoushka website for £1,500.
Green Amethyst Earrings
Following the birth of the couple’s first daughter Princess Charlotte, William reportedly gave Kate a pair of green tourmaline, green amethyst, and diamond earrings, valued at up to £13,478.07.
Made to order, the earrings are set in 18k yellow gold, with green amethysts suspended from green tourmalines.
They are thought to be by Kiki McDonough. Kate has worn a number of other pieces by the designer in the past.
Initial Birthday Necklace
The gold Midnight Moon necklace features G, C and L initials for her children and was a gift for Catherine’s 38th birthday.
The necklace was designed by British jeweller, Daniella Draper, with Cathering often preferring British designers when it comes to her jewels.
The online product description reads as follows: ‘The moon is universally representing the rhythm of time as it embodies the cycle. The phases of the moon symbolise immortality, eternity and enlightenment.’
This part of her collection is worth an estimated £1,070.
