In terms of overall availability, diamonds are more abundant than sapphires. However, when comparing high-quality, natural gemstones of significant size and exceptional color, fine sapphires can be considered rarer than diamonds.
Diamonds are found in various locations around the world and are mined in larger quantities compared to sapphires. The global diamond supply has been established through extensive mining operations over many decades. As a result, diamonds are more readily available in the market, offering a wide range of options in terms of size, color, and quality.
On the other hand, while sapphires are also found in various regions, their occurrence is more limited, and significant deposits of high-quality sapphires are less common. Sapphires from certain origins, such as Kashmir, Burma (Myanmar), and Ceylon (Sri Lanka), are particularly prized for their exceptional color and quality, but these sources have been largely depleted, making their supply even scarcer. Fine sapphires with desirable color, clarity, and size can be relatively rare and command higher prices due to their limited availability.
It's important to note that the rarity and value of a gemstone depend on several factors, including its quality, size, color, origin, and demand in the market. Both diamonds and sapphires have their unique characteristics, allure, and desirability, and the choice between them ultimately depends on personal preferences and individual priorities.