Are there any books available on how to dye rocks to change
the color of them such as changing the color of yellow tiger eye to
red or blue?
I don't know of any books on the subject, but the following may help
A lot of yellow, or golden Tiger Eye is bleached, then dyed. I'm not
certain what acid(s) may be used for this, but I'm sure many other
Orchidians do. Once bleached, gentle heating to expand the matrix
would probably allow most colorfast dyes to penetrate the material.
Most blue Tiger's-Eye (Tigereye Tiger-Eye, Tigereye...you pick the
spelling is naturally-colored with traces of iron oxide over the
millenia. In other words, a lot of it comes out of the ground that
way. Red material is usually heated to get the color, and you can do
it yourself in your home oven.
Use a vessel to hold the material and place a layer of sand or clay
to cover the bottom. Then, place the material on the sand or clay
and cover it with more on all sides and the top. This is to protect
the stone from thermal shock, which would likely cause unwanted
Place it in your (cold) oven and slowly ramp the temperature up to
400F over a period of a few hours. Leave it there for an hour or so,
then ramp the temperature down over a similar period.
The exact color you wind up with will depend on the temperature and
time in the oven, as well as the precise makeup of the Tigereye you
have. Some trace elements can affect the outcome, and Mother Earth
deposited many different ones into the many deposits of this
material around the world. Experimentation with small, or scrap,
pieces is recommended.
WARNING: Tiger-Eye was once thought to be a Quartz REPLACEMENT for
the crocidolite fibers that give it it's chatoyancy. It is now known
that the possibly carcinogenic asbestos quality is NOT replaced.
Playing around with this material may be more hazardous than
previously thought. Handle with care.
James in SoFl