Thank you very much for taking the trouble to ask the vendor. It would be fine to just copy and paste their response to your photos here if you like. Your plants also appear to show 2-3 flowers per raceme as for
Chionodoxa luciliae, versus the several flowers per raceme (up to 22) noted in the RHS document for
C. sardensis and as also shown by Newyorkrita's plants. If you're curious (not to say you have to be by any means - there are more than enough plant geeks around already
), dissecting a flower to show the filaments (the stem that holds the anthers) might be interesting. The anthers are yellow in both species (and visible in your photos) but the filament colour differs - blue in
C. sardensis and white in
C. luciliae.
Anyway, thank you again for investigating.
Lori