Appendix:Anniversary associations

Certain materials and items have a historical association with certain anniversaries. Following are those from the US and the UK.

Year	Traditional (U.S.)	Traditional (U.K.)	Modern (U.S.)
1st	paper	cotton	clocks
2nd	cotton	paper	china
3rd	leather	leather	crystal, glass
4th	linen, silk	fruit and flower	appliances (home appliances)
5th	wood	Wooden	silverware
6th	iron	sugar	wooden objects
7th	wool, copper	woollen	desk sets/pen and pencil sets
8th	bronze	salt	linens, lace
9th	pottery, china	copper	leather goods
10th	tin, aluminum	tin	diamond jewelry
11th	steel	perfume	fashion jewelry, accessories
12th	silk	silk and linens	pearls, colored gems
13th	lace	barometer	textiles, furs
14th	ivory	clock	gold jewelry
15th	crystal	crystal	watches
16th		holloware	silver holloware
17th			furniture
18th		coloured gems	porcelain
19th		furniture	bronze
20th	china	china	china
21st			brass, nickel
22nd			copper
23rd			silver plate
24th			musical instruments
25th	silver	silver	silver
30th	pearl	pearl	pearl
35th	coral, jade	coral	jade
40th	ruby	ruby	ruby
45th	sapphire		sapphire
50th	gold	gold	gold
55th	emerald		emerald
60th	diamond		diamond
65th		blue sapphire
70th		platinum
75th	diamond	diamond	diamond
80th	oak	oak