Please help identify the technique (silver)...

[Mellinda]

Hello everyone, I'm a novice here. I'm neither a jeweler nor a jewelry buyer but, as matters stand, I need to do a bit of a research on jewelry techniques. So my question is how would you call the technique used in these silver pieces? Many thanks!

 

[papertiger]

Hello everyone, I'm a novice here. I'm neither a jeweler nor a jewelry buyer but, as matters stand, I need to do a bit of a research on jewelry techniques. So my question is how would you call the technique used in these silver pieces? Many thanks!
View attachment 4735522 View attachment 4735523

Seems to be a mixture:
bark (back and outer front sphere)
reticulation (front, mostly lower)
pitted (central sphere)

 

[Compass Rose]

...maybe sand cast.....