Birthstones are gemstones representing the month you were born. The origin of gemstones as stones of protection is biblical in nature, and until 1912, there were disagreements as to which stone represented which month.
Then, Sears, (yes, THAT Sears!) published a list and it seems that settled the argument. There haven’t been many changes since then.
Diamonds are known for their strength, being scratch resistant and on the upper end of the Mohs scale for hardness. Their natural color is clear, and other colors are created by the presence of impurities. Diamonds are most common in engagement rings, although this hasn’t always been the case. In the 1940’s DeBeers, a diamond manufacturer, created the tag line, “a diamond is forever” and the idea of a diamond as an engagement ring was born.
Alternative birthstone: Clear quartz, white topaz, white sapphire.