Rarity

If beauty creates the initial impact of gemstones then rarity imparts an aura of exclusiveness and worth that increases our desire to possess them. Rarity determines the fabulous values placed on the great gems of the world and is a major influence on the prices of gems displayed in every jeweler's shop window.

Gem values, like ideals of beauty, vary with fashions and beliefs in different cultures, fluctuating with the public demand and the availability of a particular gem.