Rare red diamonds, considered the most elusive of all colored diamonds, are nature's ultimate treasure with profound investment value. 
Public records indicate there are only about 24 pure red diamonds over 1 carat, making them far rarer than their pink or blue counterparts. Their exceptional scarcity is the primary driver of their worth, with pieces like the 2.23-carat red diamond commanding prices like $42 million as far back as 1989.
As a standout category within the colored diamond market, red diamonds have benefited from strong overall growth. Data from the Fancy Color Research Foundation (FCRF) shows that from 2005 to 2025, colored diamond prices increased by 205%, representing a compound annual growth rate of 5.7% over two decades. This performance underscores their status as a stable, luxury investment asset that has consistently appreciated over the long term, even during broader market fluctuations.