1 | paper |
5 | wood |
10 | tin |
15 | crystal |
20 | china |
25 | silver |
50 | gold |
75 | diamond |
In England, and sometimes in America, the 60th anniversary is observed as the diamond anniversary. This makes up in attainability for what it lacks in arithmetic progression.
The modern list includes many more anniversaries:
1 | Paper. |
2 | Calico, or by extension cotton. Also straw. |
3 | Leather; also muslin. |
4 | Silk; or more commonly books, fruit, or flowers. |
5 | Wood; clocks. |
6 | Iron; sugar or candy. |
7 | Copper or brass; wool. |
8 | Bronze; pottery; electrical goods. |
9 | Pottery; also willow in New England. |
10 | Tin or aluminum. |
11 | Steel. |
12 | Silk and linen. |
13 | Lace. |
14 | Ivory or agate. |
15 | Crystal or any form of glass. |
20 | China. |
25 | Silver. |
30 | Pearl. |
35 | Coral or jade. |
40 | Ruby or garnet. |
45 | Sapphire. |
50 | Gold. |
55 | Emerald or turquoise. |
60 or 75 | Diamond. |