Roger Weller, geology instructor
[email protected]
copyright
2011-R.Weller
quartz-Pecos
"diamond"-1
Pecos River, New Mexico
A Pecos diamond is a doubly terminated quartz
crystal,
colored by inclusions of gypsum
quartz
5027
Photo is copyright free for
non-commercial educational uses.
Just credit photo to R.Weller/Cochise College.