Identifying French Marignan fabric from selvedge/selvage

Good Evening.
I have recently acquired this rather wonderful handmade vintage french eiderdown with valance, depicting Little Red Riding Hood. I have discovered that this fabric pattern was produced by renowned Marignan but every other piece of Marignan fabric I've seen has 'Marignan' printed on the selvedge. My one doesn't! It has 'Solide Lumiere' which I think means it's 'lightfast' but there is a diamond shape with a star inside which I have also seen on Marignan selvedges! So I am left wondering if the diamond icon is related specifically to Marignan or if it is just a generic fabric symbol?
Can anybody shed any light and end my confusion? I am looking to sell it on so I would really like to know if I can say its Marignan or not.
The internet is suprisingly barren of Marignan fabric history.
Thanks in advance for any light shed!
Vix, Cambridge, UK

I would suggest Solide Lumiere is just the name of the pattern.
Solid light?

That was my initial thought but google brings up nothing. I have found that it is sometimes used as 'lightfast' (won't fade). Some Marignan selvedges have 'Grand Teint' on them-'colourfast', so I'm now assuming its a quality rather than a pattern name. Thanks for your thoughts. Much appreciated :-)