THE MATERIAL LIBRARY
Aquamarine
The blue to greenish-blue variety of beryl.
Colors & patterns
Pale watery blue through deeper blue, sometimes greenish.
Typical origins
Brazil is an important source; other sources include Pakistan, Madagascar and parts of Africa.
Hardness
7.5–8 on the Mohs scale.
Choosing & setting this material
Translucent cabs can display delicate internal textures. Heating to reduce green tones is common; ask for treatment disclosure and protect included stones from impacts.
Care & cleaning
Clean gently with lukewarm water, a little mild soap and a soft cloth, then dry. Avoid steam, ultrasonic cleaners, harsh chemicals and sudden temperature changes, especially when treatments are unknown.
Origins above describe typical sources of the material, not the origin of an illustrated or stocked stone. Hardness measures scratch resistance, not resistance to breaking. Confirm the identity and treatments of the actual piece.
Further reading: Material reference · GIA: gem treatments