green·stone 
(grēnstōn′)
(grēnstōn′)n.
Any of various altered basic igneous rocks colored green by chlorite, hornblende, or epidote.
- quartz crystal
- quartz glass
- quartziferous
- quartzite
- quartz lamp
- quartzose
- quasar
- quash
- quash
- quasi
- quasi-
- quasicrystal
- quasicrystalline
- Quasimodo
- quasiparticle
- quasi-stellar object
- quassia
- quatercentenary
- quaternary
- quaternary ammonium compound
- quaternary structure
- quaternion
- quatrain
- quatrefoil
- quattrocento