Just a heads up, I'm starting a full-time job soon so these might be spaced out more than usual. Enjoy the sparkles in the meantime!
Tiara names are from The Court Jeweller blog's Tiarapedia; I'm not sure if they're "official" or just the writer's descriptions:
http://www.thecourtjeweller.com/p/the-tiarapedia.html (pictures are from elsewhere around the web)
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United Kingdom
1: The Girls of Great Britian and Ireland Tiara
2: The Oriental Circlet
3: The Vladimir Tiara
4: Queen Mary's Fringe Tiara
5: Queen Mary's Lover's Knot Tiara
6: The Greville Emerald Kokoshnik
7: The Persian Turquoise Tiara
8: The Belgian Sapphire Tiara
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1) Parents' initials are RC(V)B and CU(X)E
DD: Adeline Beatrice Blanche Cecilia Constance Dorothy Emmeline Eva Frances Gladys Grace Honor Irene Lavinia Mabel Mildred Olive Susannah Sylvia Theresa
2) Parents' initials are IK(B)U and AA(E)K
DS: Alfred Augustine Basil Cyril Edmund Enoch Francis Frederick Gilbert Harvey Ivan Jonathan Julius Leopold Maurice Ralph Reuben Sidney Theodore Vernon
3) Parents' initials are PR(F)D and FK(D)F
DD: Adelaide Clara Delia Edith Ellen Florence Gertrude Henrietta Isabel Josephine Lillian Louisa Margaret May Patience Rosina Ruby Theodora Violet Winifred
4) Parents' initials are MZ(L)P and CK(W)W
DS: Albert Bernard Claude Cornelius Douglas Edgar Eugene Felix Gerald Howard Humphrey Jasper Kenneth Lionel Louis Oliver Percy Rupert Silas Timothy
5) Parents' initials are EG(K)Y and JO(D)B
DD: Agatha Amy Cora Daisy Freda Georgina Helena Ida Ivy Kathleen Lydia Marguerite Mercy Millicent Prudence Rose Selina Tabitha Ursula Victoria
6) Parents' initials are AS(P)R and FW(G)M
DS: Ambrose Aubrey Cedric Duncan Ernest Evan Franklin Geoffrey Hugo Julian Laurence Lloyd Miles Neville Oscar Philip Raymond Roger Simon Vincent Walter
7) Parents' initials are OL(E)D and CB(D)W
DD: Alice Augusta Clarissa Eliza Elsie Eugenie Flora Gwendoline Helen Iris Jemima Julia Leah Lucy Marjorie Matilda Maude Priscilla Rosetta Wilhelmina
8) Parents' initials are EW(E)Y and GO(B)X
DS: Archibald Arthur Bertram Clarence Donald Edwin Frank Harold Leslie Llewellyn Malcolm Maxwell Nigel Owen Percival Roderick Stanley Valentine Victor Wilfred