A patent number/date is the the time it was accepted at the patent office,there are pieces/things still using the original patent number on...
Pick a variety and guess what to call it.... https://www.gemselect.com/other-info/sardonyx-gems.php
Looks like a #483 set............ https://picclick.com/Edge-Mark-483-Knife-Set-Solingen-West-Germany-302791466508.html
Not unless you get the temp up to about 1000 degrees Fahrenheit
Can't really see the condition of the opal,if it's not scratched bad they are easy to polish.The prong could be a problem since opal is fragile...
One photo here .......... https://www.imagesjewelers.com/steven-kretchmer/
Too much reflection on the diamonds to tell anything.Date..... probably after 1920 if it actually has white gold........
Cobalt for most jewelry applications and not sure what Steven used to make his platinum magnet jewelry........
I don't see anything to suggest ivory.The designs were cut with a saw by hand,the only place it was filed was the outside edge.
Miniature pins............... https://www.amazon.com/Purple-Heart-Mini-Medal-Small/dp/B00145ZYXS
Platinum jewelry alloys can be magnetic and can also be magnets.No iron included.
There is "root beer"/brown topaz from Guerrero Mexico which does look like many smoky quartz shades.
Kalash pot,many sold on Amazon........
The ferric chloride does not leave the blade shiny,the non etched nickel is lightly sanded and the etched darkened steel/iron is usually left dark.
@Any Jewelry Had to look up pamor and it's basically acid/chemical etching to bring out the contrast of the iron and nickel layers. There are...
Impossible to tell from a photo,rhodolite garnets are a combination of almadine and pyrope garnet. Without chemical testing it mostly a guess,they...
Looks like Paua Abalone Shell
Rhodolites have been popular for a hundred years since their discovery in North Carolina Cowee Valley area along with rubies and sapphires.The...
It's just another generic chain made in Italy for sale in the U.S. It could be from a small local jewelry store and not in public record. see...
Link to an unsalted mine with photos............. http://www.corunduminium.com/CoweeValley.htm
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