The 10th wedding anniversary is traditionally tin or aluminium, the modern is diamond jewellery, the gemstone is a diamond and the flower is a daffodil.
2 Additional Answers
The 10th wedding anniversary was traditionally referred to as Aluminium but it is now known as the leather anniversary. This term can also be defined as a day set aside to commemorate or celebrate ten years in marriage.
The tenth wedding anniversary is called the Tin wedding. It is the tenth anniversary since a wedding took place. The fifth one is called the Wooden wedding and the fifteenth one the Crystal wedding.