I have this ornament that used to belong to my mom. I have no idea where she got it but I always liked it and it has pride of place on my shelves. She must have got it in the 70s. There are no identifying markings.
I took a picture of it in its entirety (in colour and b&w) in front of a favourably hued cushion and then tried snapping facets of it. Unfortunately the more close up the shot, the more obvious are some scuff marks which were not noticeable just looking at it on display. I wasn't able to get rid of the scuffs. I also don't have the tech to make them disappear.
I think #3 & #4 have a little underwater effect. But I did try to clean the whole thing with water and dry it but some droplets remained behind. So that may be it.