last edited: 11/27/17 number of photos: 19
Chrysoprase is quartz, SiO2,
colored green by the presence of nickel.
Mineral information on quartz
Chrysoprase is commonly thought of as a translucent cryptocrystalline form
of quartz with an apple green color. The color, however can range from pale
green to yellowish green to grayish green and even lime green. The color
may slightly fade upon exposure to sunlight. The green color comes from the
presence of a green, nickel-rich clay mineral, pimelite, within the chalcedony.
Garnierite, another nickel-rich mineral, is also another possible coloring source.
An ancient source of chrysoprase was Silesia. Today, most chrysoprase comes
from Australia. In some cases, white chalcedony that has been dyed green is
being passed off as chrysoprase. Persons with severe nickel allergies have
developed rashes from contact with chrysoprase.
lectures on chrysoprase
Chrysoprase by Audrey LaClair
chrysoprase cabochons: A B C D E
chrysoprase from Australia: A B C D
chrysoprase in jewelry
lemon chrysoprase pendant: A
chrysoprase slabs: A B C D
lemon chrysoprase, rough: A B
Additional information on chrysoprase:
Chrysoprase is found in close association with serpentine.
the word chrysoprase comes from the Greek chrysos (golden) and prason (leek).
Frankenstein (Zabkowice), Silesia
Marlborough, Princhester, and Yaamba areas-Central Queensland
Photos are copyright free for non-commercial educational uses.
Just credit photos to R.Weller/Cochise College.