Diamond is the birthstone of April.

It is the most popular stone used in an engagement ring to represent one’s love for someone else.

The diamond’s physical properties of clarity and hardness have given rise to it being a symbol of power, strength, innocence and incorruptibility, longevity, constancy, and good fortune. Of course, there are also the famously cursed diamonds, like the Hope, as well as an old Persian belief that the diamond was a source of sin and sorrow, which is not so unreasonable, considering how much blood has been shed in the mining, selling, and acquiring of the stone.