Wedding Anniversary Gifts...

A wedding anniversary is the anniversary of the date a wedding took place.

Official Recognition:

In the Commonwealth realms, one can receive a message from the monarch for 60th, 65th, and 70th wedding anniversaries, and any wedding anniversary after that. This is done by applying toBuckingham Palace in the United Kingdom, or to the Governor-General's office in the other Commonwealth realms.

In Canada, one can also receive a message from the Governor General for the 50th anniversary, and every 5th anniversary after that.

The situation is similar in Australia, where one can receive a letter of congratulations from the Governor-General on the 50th and all subsequent wedding anniversaries; the Prime Minister, the federal Opposition leader, local members of parliament (both state and federal), and state Governors may also send salutations for the same anniversaries.

In the United States, one can receive a greeting from the President for any wedding anniversary on or after the 50th.

Roman Catholics may apply for a Papal blessing through their local diocese for wedding anniversaries of a special nature (25th, 50th, 60th, etc.).

Celebration and Gifts:

The names of some anniversaries provide guidance for appropriate or traditional gifts for the spouses to give each other; if there is a party these can be brought by the guests or influence the theme or decoration. These gifts vary in different countries, but some years have well-established connections now common to most nations: 5th Wooden, 10th Tin, 15th Crystal, 20th China, 25th Silver, 30th Pearl, 40th Ruby, 50th Golden, 60th Diamond. The tradition may have originated in medieval Germany where, if a married couple lived to celebrate the 25th anniversary of their wedding, the wife was presented by her friends and neighbours with a silver wreath to congratulate them for the good fortune that had prolonged the lives of the couple for so many years. On celebration of the 50th, the wife received a wreath of gold. Over time the number of symbols expanded and the German tradition came to assign gifts that had direct connections with each stage of married life. The symbols have changed over time. For example in the United Kingdom, diamond was a well known symbol for the 75th anniversary, but this changed to the now more common 60th anniversary after Queen Victoria's 60 years on the throne was widely marked as her Diamond Jubilee.

The origins of the current gift conventions date to 1937. Before that, only the 1st, 5th, 10th, 15th, 20th, 25th, 50th, and 75th anniversaries had an associated gift. In 1937, the American National Retail Jeweler Association (now known as Jewelers of America as a result of an organizational merger) introduced an expanded list of gifts. The revamped list gave a gift for each year up to the 20th, and then for every fifth anniversary after that. 

Traditional anniversary gifts

Lists of wedding anniversary gifts vary by country.

Year	U.S.	U.K.
1st	Paper	Cotton
2nd	Cotton	Paper
3rd	Leather
4th	Linen, silk	Fruit and flowers
5th	Wood
6th	Iron	Sugar
7th	Wool, copper	Woollen
8th	Bronze	Salt
9th	Pottery	Copper
10th	Tin/Aluminium
11th	Steel
12th	Silk	Silk and fine linen
13th	Lace
14th	Ivory
15th	Crystal
20th	China
25th	Silver
30th	Pearl
35th	Coral, jade	Coral
40th	Ruby
45th	Sapphire
50th	Golden
55th	Emerald
60th	Diamond
70th		Platinum
75th	Diamond & Gold
80th		Oak

Flower Gifts :

Year	Flower
1st	Carnation
2nd	Lily of the Valley
3rd	Sunflower
4th	Hydrangea
5th	Daisy
6th	Calla
7th	Freesia
8th	Lilac
9th	Bird of paradise
10th	Daffodil
11th	Tulip
12th	Peony
13th	Chrysanthemum
14th	Dahlia
15th	Rose
20th	Aster
25th	Iris
28th	Orchid
30th	Lily
40th	Gladiolus
50th	Yellow rose, violet

Source : wikipedia.org