Gemstone treatment
Heat Treatment, Aquamarine
Greenish or yellowish tones are reduced, leaving a purer blue. Microscopic evidence is usually minimal or absent.
01
What to look for
Greenish or yellowish tones are reduced, leaving a purer blue. Microscopic evidence is usually minimal or absent.
02
What it means
Heating aquamarine is common and stable. It improves color by reducing green or yellow components.
03
Expert move
Color alone cannot prove treatment. Commercial pure blue aquamarine should often be considered potentially heated.