unknown hallmark on ring and pendant

[populous38]

Hi Guys, I have a ring and pendant with unknown hallmarks. Ring is quite fancy with what looks like glass, but probably isn't, over something looking iridescent. The pendant is the same. All I can say is that the is a 925, a big D and then in an oval cartouche, a couple of squiggly letters and a small D. I have tried to look them up, but to no avail. Wondered if anybody had any idea.
Appreciated as always.
Gary

[dognose]

Hi Gary,

Can you post larger images?

Trev.

[populous38]

i'll give it a go Trev

[populous38]

the one on the pendant is worn, will try the ring again later

[populous38]

Hope these are better, before uploading, these looked pretty big.
Gary

[populous38]