Aventurine quartz
(a-'ven-chu-ren-kwôrts)
17th c.; med. german quarz; slav. quarc; ital. tech. aventtura
A translucent quartz spangled throughout with scales of fuchsite or other green mineral, used as an ornamental stone and sometimes in jewelry
Color
Green with inclusions of fuchsite, reddish with hematite
Chemical composition
SiO2 + different mineral inclusions
Specific gravity
2,66 ±0,30
Refractive index
1,544 - 1,553
Optical character
Uniaxial +