35 ct Aquamarine

The main price differentiators are color and carat weight. Aquas can rangle in color from blue to green, but the pure blues are the more valuable. Green aquas are often heated to reduce the yellow, so a clean unheated blue aquamarine with good color saturation is a rare and valuable gem!! Smaller aquamarines (under 5 carats) of good quality can be found at prices around $100 to $250 per carat.