The OP's mark is very different from the Larter mark.A good closeup and in focus photo of the OP's cuff link would probably show it.
Both look like commercial findings,the clover mark may be the commercial seller.#2 the sterling "mark" is hand engraved.Maker's/engraver's mark...
Here is one with the same theme carved a little different....
Looks like someone copied a "lizard"/dinosaur fossil onto the jug.
Half of a Nautilus shell,the reverse is filled with some type of material.The living chamber has also been removed.
The stone looks like a Standard Round Brilliant,the design didn't start until 1920 and it took many years before all diamond cutters accepted...
There are at least 6 chips.
It appears to have been cast,most likely made sometime after the late 1940's.
The broken teardrop looks grainy and most likely some type of quartz and not turquoise,a good closeup would help.
Everything to the right of the 8 is a hallmark/trademark.
Chinese mystery stone,dyed,reconstituted,compressed,etc. Post a closeup photo of the broken stone edge,it might tell something.
The first condoms were as early as the 1600's made of animal intestines,rubber was available in the mid 1800's.
Looks like it was acid etched and lacks the detail a good hand engraved piece shows.
The spoon is standard type for Navy Officer's Mess of the time period,it could have been used by a great number of people over the years.
The small red stones appear to be garnets,the large stone could be garnet,glass,etc.The green stones could be a number of types,all stones should...
Episode 416 ............ Looks like at least one "expert" needs to go to school . Yard sale jewelry section he says a dull white base opal needs...
Ethiopian Coptic
With the sloped hinged top,it look like a mail box.
Looks like some of the wood carvings at the Nara craft museum gift shop.
The stone actually looks like an old European cut diamond.
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