If you were born in May, or are looking for information or a gift for someone who was, you definitely want to know the birthstone for May. People born in May can have one of two astrological signs ...

May’s birthstone is emerald ... Most emeralds fall between a 7.5 to 8 on the Mohs Hardness Scale. This means that emeralds have a fair to good toughness, but they aren’t quite as hard as ...