I was shopping for a "Chelsea Filter" online and came across some
listed as "Jadeite (Chelsea) Filter," but in the attached picture
is shown w/ "Jadeite Filter" printed on them. Others I have found
which are listed as "Chelsea Filter" w/ no reference to jadeite
other than in the description have "Chelsea Filter" printed on
them. Is there a difference between these two filters
Not usually. Chelsea filters allow our eyes to see reddish color
reactions in chromium-bearing substances, such as Colombian emeralds
and certain green jadeite jades. Some manufacturers simply take a
regular Chelsea filter, attach it to a different-looking holder and
call it a "Jadeite Filter," but they are really the same thing.
There is, however, another filter called a "Lilac Jade Filter" that
is designed to help separate natural lilac-colored jadeite from dyed
material. If you're unfamiliar with the difference between the two,
stick with the regular Chelsea filter unless you'll be dealing with a
lot of lilac-colored jadeite.
Another good reason to stick with a regular Chelsea filter is
because they can help identify quite a few other as well.
A Lilac Jade Filter is only good for lilac-colored jade.
James S. Duncan, G.G.
James in SoFL