Yes

TransfiguredGem

You can still use TransfiguredGem True (or False) for backwards compatibility. This will use the old behavior of matching any Transfigured Gem.

Now though, you can also filter Transfigured Gems by name (i.e. string matching), e.g. TransfiguredGem == "Bladestorm of Uncertainty" (matches a specific Transfigured Gem) or TransfiguredGem "Golem" (matches all Transfigured Gems with "Golem" in the name).

Unfortunately BaseType cannot be used for this because under the hood Transfigured Gems not actually separate base types, they are modifications to the base skill gem.