Amethyst ranges in color from pale lilac to deep purple.
The pale colors are sometimes called "Rose de France"
and can be seen set in Victorian jewelry. The deep colors
are the most valuable. (February birthstone)
Citrine includes yellow to gold to orange brown shades of
transparent quartz. Named from the French name for lemon,"citron,"
many citrines have a lemon color.
Peridot is one of the few gemstones which exist only in one
colour. Finest traces of iron account for the deep green colour
with a slight golden hue. (August birthstone)
Topaz is the birthstone for those born in the month of November.
Pale topaz which is enhanced to become blue is found in Brazil,
Sri Lanka, Nigeria, and China.