another thing to add here in this context:
there is also a Belgium Region called
"Belgian Lorraine" which is a Part of the Lorraine in the south of Belgium. This actually is besides the Ardennes where the Belgium stones have their origin...so my personal theory here is that the supllier of the labelled
"LA LORRAINE" stones might have his origin in this region or was someone who was inspired by this region....
The second trace is that many stones of "LA LORRAINE" have been sold out of Belgium and not from France....