Need Help with ID of Vintage Earrings Marked 833 with Makers Mark D

[needfulthings217]

Hoping to get an approx. age, maker, on these earrings. What I do know; they are marked 833, seem to be two-tone, have what looks like a D maker's mark-it's on the 3rd pic, but looks like it's on its side in the pic., and I could have sworn I saw a 925 mark on them as well when I initially looked at them months ago. I couldn't find anything, so I put them aside. Now I am hoping someone can give me some info or possible place of origin. Thanks in advance!! Even the style would be helpful! I think they would be considered filigree?

[bambih2005]

833 is 20 caret gold, white or yellow. Can't really see D in the pic.

[needfulthings217]

So should I assume they are solid gold, just white and yellow? There is a D in one of the pics, but it's on its side, so it's hard to see. I definitely have more research to do. Thank you so much for the help!