May birthstone is emerald
May's birthstone is emerald, the stone of long-lasting love. Although many love stones fall into the pink or red category, emerald's green light shines like a beacon for long-term relationships. It reminds us that our love will change over time as we change and grow.
Emerald was a popular stone for engagement rings prior to diamonds for this reason. Emerald is a member of the beryl (aquamarine) family.