Diamond
Though often thought of as a colorless stone, a truly colorless diamond is a rarity. Usually diamonds have a light yellow tint, sometimes brown. If precious stones were described as a hierarchy, the diamond would be reigning over all as King (or Queen, depending on your preferences). Aside from being the most loved, popular and appreciated of all precious stones, the diamond is also the most valuable gemstone money can buy. The word diamond has ancient Greek origins (adamas), being translated as unbreakable, invincible.