Wedding anniversaries are celebrated with
names such as wooden, silver,
golden, and diamond anniversary (5, 25, 50, and
60 years, respectively). Traditionally, the married couple receives
gifts made from these products to celebrate their wedding anniversary.
Following is a list with traditional anniversary names, and a list of
(more) modern replacement gifts (according to the World Almanac)

Year  Traditional           Modern

 1st  Paper                 clocks
 2nd  Cotton                china
 3rd  Leather               crystal, glass
 4th  Linen (silk)          appliances
 5th  Wood                  silverware
 6th  Iron                  wood objects
 7th  Wool (copper)         desk sets
 8th  Bronze                linens, lace
 9th  Pottery (china)       leather goods
10th  Tin, aluminum         diamond
11th  Steel                 fashion jewelry
12th  Silk, pearls          colored gems
13th  Lace                  textiles, furs
14th  Ivory                 gold jewelry
15th  Crystal               watches
20th  China                 platinum
25th  Silver                sterling silver
30th  Pearl                 diamond
35th  Coral (jade)          jade
40th  Ruby                  ruby
45th  Sapphire              sapphire
50th  Gold                  gold
55th  Emerald               emerald
60th  Diamond               diamond