Victoria Royal Ltd. Beaded Gown Dating- 60's

Beautiful!

 

Isn't that ever pretty!

The lining of the bodice appears to be organza, but I couldn't say the fiber for sure—silk is possible with the look of the dress. The skirt has the luminosity of silk. Do you have a close shot of the skirt fabric? It might be silk taffeta. I believe the skirt's transparent lining that you are speaking of would be tulle. The beading would have been hand-sewn. I believe the dress is 1960s-vintage.

I see some other dresses by the same Victoria Royal Ltd. online, and it looks like they specialized in long formal gowns.

 

I'm seeing 60s especially with those zips. Also that Hong Kong crown colony line was most common in the 50s and 60s, though you do certainly see it later, just less often.

 

Does it have slubbing, as I think I see? https://vintagefashionguild.org/fabric-resource/slub/
because if it does, it may be silk shantung. https://vintagefashionguild.org/fabric-resource/shantung/

(You might not be aware that silk can have various textures and appearances depending upon the weave, and type of silk.)