You will need to buy different diamond rings for different special occasions. Several people often gift diamond anniversary rings to couples who are celebrating their wedding or engagement anniversary. Anniversary rings with gemstones such as pearl and ruby have become immensely popular among couples over the last few years. Diamond anniversary rings with metal bands is also one of the most loved choices of buyers. If you are planning to gift a diamond ring to a couple who has welcomed a new child to their life, then you should decide whether to give the gift to the child or to the mother. In such cases, you could give diamond rings with birthstones or rings with a personal inscription of the date of birth to the newborn baby. You could also give the ring to the mother and request her to pass the ring to the child when he/she turns 18.