4.91 Carat Blue BRAZILLIAN Cushion Aquamarine

This is a 4.91-carat cushion-cut aquamarine of Brazilian origin with a blue hue. The stone has been heated, a common treatment for aquamarine to enhance and stabilize color. It is offered as a loose stone without any setting. Aquamarine in the 4-5 carat range at cushion cut represents a substantial size for this beryl variety.