Lenses to check color blindness.... https://www.worthpoint.com/worthopedia/american-optical-company-optometrist-1810086518
If it's yellow probably citrine.
The wriggle engraving was from testing the silver,can't help with the mark.
The finish on the stone is poor and not fit to the ring shank,possibly something out of a sweatshop in Thailand.
Did you mean fleur de lis?
Just a bunch of plain tattoo machines,but the after market has many works of art....
Looks like a scimitar oryx on the side of the body.
https://www.amazon.com/Jewels-Necklace-Stainless-Fashion-Jewelry/dp/B07DB8WDKG Twisted rope chain so you can look around.
What style chain?
The design on the shank looks like a thistle.
This is the Tiffany piece you need to find.... https://www.bidsquare.com/online-auctions/rago/rare-tiffany-co-mokume-and-silver-906603
Photos are too dark and not focused,but looks like there may be schreger lines.
Probably something like 1018 mild steel and was never heat treated/hardened to begin with.
Looks like a trimmed down mabe pearl.
Maybe they are galena.
There are synthetic purple sapphires.
There is a mark,right side above the hinge.
If it were silver it would be marked sterling and have a # between 1-1000. Possibly they also made a brass version....
Could be from India... https://www.liveauctioneers.com/en-gb/item/74940976_indian-ebonised-sword-stick-with-horn-handle-carved
So you really didn't know what they are/were used for.They are a ring mandrel and hammer,used by many sailors during WW2 and probably before that...
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