Most people know what a screwdriver is,but giving us size,materials,etc. helps the process. Example... what is in the photo and what was it used...
Looks like the culet was chipped off,need in focus photo.Age of the stone is in millions of years.
Many different rings are called signet rings,many with just a plain onyx stone,try this one........
It looks like Simone Ricky is one person and MR is another.There appears to be a lot of casting porosity or solder on the shank.
Goshenite is beryl
It's a "B" on the stone .... https://lettergenerator.net/oldenglish-letters.html
Most likely plated base metal,there are hundreds of unknown marks on rings. https://www.jewelry-secrets.com/Blog/unidentified-stamps-inside-rings/
Rolling mill textures......
reported 17 of them now.
No one can tell what type of stone it is from a photo.Since it isn't bubbles I'm seeing then the stone is extremely dirty.
How many bubbles do you see?
The bird of prey and poisonous snakes theme seems a bit strange.
Since you haven't provided a photo,etc. of what's in the diamond shape you can try searching the trademarks office. Lot's of luck to you, the last...
You can look thru here and see if they have the part you need..... http://www.oldphoneworks.com/wood-wall-phone-parts/
Drinking horn.... example https://www.ebay.co.uk/itm/2-drinking-horns-decorative-wine-drinking-horn-Caucasian-souvenir-vintage-USSR-/293096839911
Don't try to clean it,etc. Maybe @Couch Potato Wannabe can translate.
Found this article posted on an engraving forum..... https://mymodernmet.com/renaissance-notation-knives/
Hematite by itself is not magnetic,it needs to have some magnetite also in the mineral...... https://geology.com/minerals/hematite.shtml
Then there is applied patina which in most cases you do not want to remove,a couple examples. [ATTACH]
Household family memorial shrine.
Separate names with a comma.