EARRINGS arranged by most recent to earliest worn from its FIRST appearance starting Engagement Day.
PEARL WITH THREE LEAVES POST EARRINGS

May 13, 2012 Polo match with Princes William and Harry: http://www.popsugar.com/Kate-Middleton-Pictures-William-Harrys-Polo-23085411
PAVE POST AND TEARDROP DANGLE EARRINGS

The closed back setting and the ear stoppers shown below indicate that these are costume jewelry.

May 11, 2012 BOA Olympic Concert at Royal Albert Hall: http://www.zimbio.com/photos/Kate+Middleton/Greatest+Team+Rises+BOA+Olympic+Concert/u2GmdFXWKwo
PEARL STUD WITH PEARL DROP EARRINGS

Apr. 26, 2012 Visiting The Royal British Legion: http://www.zimbio.com/photos/Kate+Middleton/William+Kate+Visit+Royal+British+Legion/BkTaVPKsJk3
Keriane S. on What Kate Wore facebook page suggested a similar pair from John Lewis: http://www.johnlewis.com/96049/Product.aspx

It is very likely that this is where the Duchess bought hers as she is known to shop at John Lewis. This is merely a speculation and not fact.
BLUE TOPAZ AND PERIDOT EARRINGS
Posted April 26, 2012: These earrings are made up of an east-west oval peridot with a larger oval blue topaz underneath. There is a pair of diamonds between the two oval stones.



Apr. 25, 2012 UK Premiere of 'African Cats': http://www.zimbio.com/photos/Kate+Middleton/Duke+Duchess+Cambridge+Attend+African+Cats/FhrHxDB1EzN
This pair is from Kiki McDonough and are called 'Kiki Classic' Peridot, Blue Topaz and Diamond Earrings. Thanks to Anna N for identifying these earrings.

ADDED INFORMATION APRIL 26, 2012: Kate's earrings are a larger version of the earrings above and instead of diamonds, her stones are peridot.

Picture from Kiki McDonough via Allana S. Thanks Allana S. for the added information.
DIAMOND AND GREEN AMETHYST EARRINGS
This pair of earrings is from Kiki McDonough and set in 18K yellow gold. The hinged circular hoop is set with diamonds. Dangling from the diamond hoop is an oval green amethyst set in the east-west direction which is surrounded with diamonds.




Dec. 25, 2011 Christmas Day Service at Sandrinham: http://www.zimbio.com/photos/Kate+Middleton/British+Royals+Attend+Christmas+Day+Service/gLITc04UpN1
Thanks to Anna N for the identification of this pair of earrings!
ART DECO SILVER PASTE EARRINGS

Nov. 10, 2011 Dinner for the National Memorial Arboretum Appeal: http://www.zimbio.com/pictures/qRkVxs4BUVn/Duke+Duchess+Cambridge+Attend+Dinner+National/0MpOk9QrEru/Kate+Middleton
Posted Nov. 11, 2011: Credit goes to What Kate Wore blog. One of their readers shared a link that had a similar pair of earrings to Catherine's. After doing some comparisons, it looks like they are the SAME earrings. The Art Deco Silver Paste earrings was part on an Estate Jewelry Trunk Show at Mertier last December 3-4, 2010 in San Francisco. You can read and see pictures of the earrings on Mertier's blog: http://metiersf.blogspot.com/2010/12/estate-jewelry-trunk-show-preview.html
Posted Nov. 12, 2011: From Beaut Jewellery:
1. Did Beaut Jewellery/Jenny Packham copy the design of the earrings sold in San Francisco Dec. 2010?
2. Were the SF earrings sold off as made in 1930 when in fact it was new?
3. Is there an outside jewelry manufacturer who sold to the San Francisco boutique and is now selling through Beaut Jewellery exclusive to Jenny Packham in 2011? Obviously, it can't be exclusive to Jenny Packham in 2010 since the earrings were available for sale in San Francisco.
Posted Dec. 19, 2011: These earrings are now available for sale at Beaut Jewellery. The earrings are called Eva.
UNIDENTIFIED EARRINGS / UNCLEAR EARRINGS

Oct. 10, 2011 Gala by 100 Women in Hedge Funds: http://www.dailymail.co.uk/femail/article-2049101/Duchess-Cambridge-Kate-Middleton-lady-red-charity-gala.html
DIAMOND LINE EARRINGS
This looks like diamond line earrings made up of 5 diamonds. This is based on photos below.

July 22, 2011 Wedding Dress Exhibition, Buckingham Palace: http://justjared.buzznet.com/2011/07/22/kate-wedding-dress-displayed-buckingham-palace/
DIAMOND PENDANT EARRINGS
This is composed of a bezel-set diamond at the top supporting three flexible fringes. The fringes are made up of round and baguette diamonds. The central fringe ends with a pear-shaped diamond. The two outer fringes are anchored to a diamond crescent that surrounds the central fringe. The crescent has three dangles attached to it which consists of a baguette diamond ending with a bezel-set round diamond.


During the arrivals for the 'BAFTA Brits to Watch' event, a television announcer said these were loaned from QEII. No confirmation has been given regarding these earrings. When Kate wore the Diamond Maple Leaf Brooch during Canada Day, July 1, an official announcement was given by Clarence House and by the Official British Royals facebook page. For these earrings, no announcements have been made.
July 9, 2011 BAFTA Brits to Watch: http://www.zimbio.com/pictures/Z_p3y3aScjP/Duke+Duchess+Cambridge+Attend+BAFTA+Brits/XK7yyPN3btR/Kate+Middleton
GOLD CHANDELIER EARRINGS

July 8, 2011 British Consul-General Reception, Los Angeles: http://www.zimbio.com/pictures/F_BoldQf2Jj/Duke+Duchess+Cambridge+Consul+General+Reception/hFwT9U8Enzm/Kate+Middleton
July 29, 2011 Pre-Wedding reception for Zara Phillips and Mike Tindall: http://www.zimbio.com/pictures/FzXtzvL-S02/Pre+Wedding+Reception+Party+Royal+Yacht+Britannia/IR7JeeOae2z/Kate+Middleton
These earrings are by Cassandra Goad and are called Temple of Heaven Girandole Earrings in 9K Yellow Gold. (Thank you Lauren M for identifying these earrings!)

Kate wore this to the wedding of Emilia D'Erlandger and David Jardine-Paterson on April 17, 2010.

ROUND TURQUOISE DANGLE EARRINGS

From the way the earrings reflect the light below, the material may be enamel instead of an actual turquoise gemstone.

Jul 8, 2011: Calgary Stampede
DIAMOND CLUSTER DROP EARRINGS

Although the top part looks like her white topaz and diamond earrings from Kiki McDonough, they are different. The diamonds surrounding the central stone are larger than the white topaz ones. The top cluster and bottom cluster are the identical to one another. Both clusters are separated by three baguette diamonds going east - west.
July 1, 2011 Concert at Parliament Hill: http://www.theglobeandmail.com/life/in-pictures-what-the-royals-wore-on-day-2/article2084214/?from=2083489

July 30, 2011 Wedding of Zara Phillips and Mike Tindall: http://www.zimbio.com/pictures/CcZJLWbESuj/Royal+Wedding+Zara+Phillips+Mike+Tindall/oAWG4mvS-W8/Kate+Middleton
Oct 26, 2011 'In Kind' Charity Event: http://www.zimbio.com/pictures/-9ha67DN1PT/Kate+Middleton+Attends+Kind+Direct+Charity/7UHUP7kOtd_/Kate+Middleton
The flower clusters with baguette diamonds in between clusters seem to follow the theme of her diamond bracelet worn during the BAFTA Brits to Watch event, July 9, 2011.

Dec 19, 2011 The Sun Military Awards at the Imperial War Museum: http://www.zimbio.com/photos/Kate+Middleton/Kate+Middleton+Prince+William+Out+London/V1VrLv73PY-
GOLD HOOP WITH GOLD LEAF DANGLE EARRINGS FROM VINNIE DAY
These earrings are from Vinnie Day: http://vinnieday.myshopify.com/products/silver-simple-single-bali-earring-with-vinnie-day-logo-leaf (Thanks to What Kate Wore Blog for the information!)

Jun 30, 2011 Youth Reception in Rideau Hall, Ottawa: http://www.zimbio.com/pictures/0PkguXh2rHY/Prince+William+Kate+Middleton+Youth+Reception/hGWi0-5JLpN/Kate+Middleton
Jul 7, 2011 Calgary Stampede: http://www.zimbio.com/pictures/1S_2KVZezVE/Prince+William+Kate+Middleton+Calgary+Stampede/y8B2paLwl3B/Kate+Middleton
SAPPHIRE AND DIAMOND DANGLE EARRINGS
First seen at the church service for Prince Philip's 90th birthday. The Duchess wears a cluster of sapphire surrounded with diamonds. This cluster dangles from a single diamond. I can make out 9 diamonds surrounding the oval sapphire.


My speculation is this could be the bottom part of Diana's earrings below but re-set for Catherine. The bottom oval sapphire is surrounded by 9 diamonds and dangles from a single diamond. In Catherine's pair above, you can see that there are extra prongs around the sapphire to match the prongs on her engagement ring. The one on Diana's only has four visible prongs.

June 3, 2011 Official Canadian tour portrait: http://www.zimbio.com/pictures/3Nl6d4Sv7a1/Duke+Duchess+Cambridge+Official+Tour+Portrait/mQdheeLS0kL/Kate+Middleton
June 27, 2011 Wimbledon Championships: http://www.zimbio.com/pictures/Qdt4yleOZm0/Championships+Wimbledon+2011+Day+Seven/eJjuWGZ6rOh/Kate+Middleton
July 3, 2011 Quebec, Canada: http://www.zimbio.com/pictures/eCxRAm-Uakb/Duke+Duchess+Cambridge+Canadian+North+American/7DiekEVr1gQ/Kate+Middleton

Above photo from July 4 shows that this is a sapphire cabochon (instead of a faceted stone), just like Diana's.
July 4, 2011 Visiting Prince Edward Island: http://www.zimbio.com/pictures/RnFc1HkSLbe/Royals+visit+Prince+Edward+Island/zSAtGORcrn3/Kate+Middleton
July 10, 2011 California: http://www.zimbio.com/pictures/zcuhWZA0mh7/Reception+Mark+Launch+Tusk+Patrons+Circle/NR-xDpk4Oid/Kate+Middleton
IOLITE AND SILVER STILETTO EARRINGS
Catherine wore this pair to the ARK 10th Anniversary Gala. These sterling silver earrings are from Links of London called Effervesence Bubble Stiletto Earrings. There is a bezel set iolite at top and a bead ball dangling from a rolo chain. The center of the rolo chain has a smaller silver bead. Another dangle is a small rectangule engraved with the 'Links of London' logo.





June 9, 2011 ARK Gala: http://www.zimbio.com/pictures/KIQ_ZnHKeiE/ARK+10th+Anniversary+Gala+Dinner/c16JOg__f7v/Kate+Middleton
June 11, 2011 Waley-Cohen and Ballin wedding: http://www.zimbio.com/pictures/-6JvFY42uSj/Kate+Middleton+sister+Pippa+Middleton+attend/vSqB2uYMgMg/Kate+Middleton
July 3, 2011: Arrival in Charlottetown: http://www.flickr.com/photos/canadianheritage-patrimoinecanadien/sets/72157626989886223/with/5900660424/
SHELL EARRINGS
It's hard to see but Catherine is wearing what looks like shell earrings that matches her shell necklace when meeting the Obamas on May 24, 2011

May 24, 2011: http://www.zimbio.com/pictures/cvjpo9xhDJe/Barack+MIchelle+Obama+Meet+Prince+William/Zie8CZfAstZ/Kate+Middleton
DIAMOND WEDDING EARRINGS
From the official royal wedding site:
The Bride’s earrings, by Robinson Pelham, are diamond-set stylised oak leaves with a pear shaped diamond set drop and a pavé set diamond acorn suspended in the centre. Inspiration for the design comes from the Middleton family's new coat of arms, which includes acorns and oak leaves. The earrings were made to echo the tiara. The earrings were a personal gift to the Bride from her parents for her Wedding Day.

April 29, 2011 Carriage Ride to Buckingham Palace: http://www.zimbio.com/pictures/G3fkXp12NVj/Royals+Travel+Buckingham+Palace+Carriage/rm2ydtAssZk/Kate+Middleton
WHITE TOPAZ STUD EARRINGS
First seen on Feb. 25, 2010 when Catherine and Prince William visited St. Andrews University. These earrings are from Kiki McDonough Grace Collection. The large stone is white topaz surrounded by diamonds.

Feb 25, 2010 St. Andrews University: http://www.zimbio.com/pictures/Dv1V_o3i-E9/Prince+William+Kate+Middleton+St+Andrews+University/TnGZjd5h7Ku/Kate+Middleton
Mar 8, 2011 Northern Ireland: http://www.zimbio.com/pictures/KuCCt77GUyJ/Prince+William+Kate+Middleton+Visit+Northern/hUCQjhPUVLE/Kate+Middleton
June 11, 2011 Trooping the Colour: http://www.zimbio.com/pictures/yV5u4d8BOqL/Trooping+The+Colour/lYzmY8GNK6o/Kate+Middleton
June 13, 2011 Order of the Garter Service: http://www.zimbio.com/pictures/gtm0UdnUjRD/Royals+Attend+Order+Garter+Service/zVgM_SmI2q6/Kate+Middleton
July 1, 2011 Canada Day: http://www.ibtimes.com/articles/172977/20110701/kate-middleton-stunning-celebrates-canada-day-144th-reiss-dress-ottawa-fashionista-sylvia-fletcher-f.htm
July 8, 2011 Canada Departure: http://www.zimbio.com/pictures/dPgZIKFYQ5A/Prince+William+Kate+Middleton+Airport/HkI91M9lwzW/Kate+Middleton
July 8, 2011 Los Angeles Arrival: http://www.zimbio.com/pictures/e727mmHp5vZ/Prince+William+Kate+Middleton+LAX/Vdhl4uJ4FJt/Kate+Middleton
GOLD HOOPS WITH CITRINE TEARDROP
First seen on her first official engagement on Feb. 24, 2011 to launch at lifeboat in Anglesey, Wales, Catherine wore this gold hoops with a bezel set citrine teardrop dangle. These earrings are from Kiki McDonough Jewelry.


Feb 24, 2011 Anglesey: http://www.zimbio.com/pictures/PA-kw3iOR46/Prince+William+Kate+Middleton+visit+Trearddur/gkMDeCdxmpq/Kate+Middleton
April 11, 2011 Darwen: http://www.zimbio.com/pictures/kjxQJVdWVjB/Prince+William+Kate+Middleton+Out/MVug9_DxjzT/Kate+Middleton
June 4, 2011 Epsom Derby: http://www.zimbio.com/pictures/ftMstABM1tj/Racegoers+Enjoy+Derby+Day+Epsom+Downs+Racecourse/3J-2U5ioy1i/Kate+Middleton
June 25, 2011 Victoria Barracks: http://www.zimbio.com/pictures/FhsRwAKtoDD/Duke+Duchess+Cambridge+Attend+Irish+Guards/mqH41o-Cmcx/Kate+Middleton
July 4, 2011 Dragon Boat Race: http://www.zimbio.com/pictures/yH_hS6K9EaY/Prince+William+Kate+Middleton+Boat+Race/GTJ4vFb2uQh/Kate+Middleton
July 5, 2011 Youth Parliament: http://www.flickr.com/photos/canadianheritage-patrimoinecanadien/sets/72157627126360282/
July 6, 2011 Northwest Territories: http://www.zimbio.com/pictures/78nsVZpJv0K/Prince+William+Kate+Middleton+Canadian+Rangers/p4jjOkqViHw/Kate+Middleton
July 7, 2011 Calgary Arrival: http://www.zimbio.com/pictures/YN0T_tkaN1U/Prince+William+Kate+Middleton+Calgary+International/WZOeDzlrWnB/Kate+Middleton
July 9, 2011 Santa Barbara Polo Match: http://www.zimbio.com/pictures/81E2NRT9qvK/Duke+Duchess+Cambridge+Attend+Polo+Match+Foundation/qjYSZEky3P5/Kate+Middleton
TEARDROP DANGLE EARRINGS
I haven't been able to get good detail of these earrings that Catherine wore to a wedding on January 8, 2010.

Jan 8, 2011 Wedding Sarah Louise Stourton and Harry Aubrey-Fletcher at Aldborough, North Yorkshire, England: http://justjared.buzznet.com/2011/01/08/prince-william-kate-middleton-royal-relatives-wedding/
The first appearance of these earrings was before her engagement, at another wedding.


Oct 23, 2010 Harry Meade and Rosie Bradford Wedding:
HOPE EGG EARRINGS
For the official engagement photos taken by Mario Testino, Catherine wore a pair of pave teardrops earrings in the shape of an egg. These earrings are from 'Links of London' and are called Hope Egg Earrings. They are teardrop dangle are made in sterling silver and the teardrop part is pave set with white topaz.



She has had these for quite awhile.
March 14, 2008 Cheltenham Festivel: http://www.zimbio.com/pictures/AWJJ3aZnzM7/Cheltenham+Festival/KuZKzQKnYvl/Kate+Middleton

Jul 2, 2011: Canadian Tour Day 3: http://www.zimbio.com/pictures/3eHVRm-uuX1/Duke+Duchess+Cambridge+Canadian+Tour+Day+3/rpn8bYgfEoj/Kate+Middleton
DIAMOND AND SAPPHIRE CABOCHON DANGLE
Worn during the official engagement announcement at Clarence House Nov. 16, 2010. A sapphire oval cabochon set in yellow gold bezel hangs from a bezel set diamond stud.

Nov 16, 2010 Meeting the press at Clarence House: http://www.zimbio.com/pictures/2Kx_DlgccBd/Clarence+House+Announce+Engagement+Prince/Ze5n8NQ2-qY/Kate+Middleton
Jun 30, 2011 Leaving for Canada: http://justjared.buzznet.com/2011/06/30/prince-william-kate-en-route-to-canada/

Jun 30, 2011 Ottawa Arrival: http://justjared.buzznet.com/2011/06/30/prince-william-kate-ottawa-landing/
Aug 19, 2011 Birmingham: http://www.zimbio.com/pictures/hc48VOHw3Sz/Prince+William+Kate+Middleton+Visit+Birmingham/f-pjugSKtwg/Kate+Middleton
This necklace and matching earrings were first seen at the wedding of Lady Rose Windsor and George Gilman July 19, 2008.
