We were still using sterling stamp in 2000 at a well know designer jeweler.And I have purchased stamped pendants and other findings from Rio...
Tiger eye,dyed agate,dyed druzy quartz,yellow one looks like agate.The heart is die stamped and may not be older than 20 years.
Looks like turquoise and agate,impossible to date.Could have been made in Mexico or any number of places,by hobbyist/students, etc... old? age is...
Soapstone can handle a lot of heat,it was used as molds for gold/silver jewelry,etc. for centuries.Today it is often used in wood burning stoves....
You could probably contact the company which made them,there is probably history of their good there. National Enameling and Stamping Company...
Mermite references the insulation,they were transport containers for cooked food and iced blood. Modern version.......
@Diggummup You might be surprised by what students can make,Revere Academy is now closed due to Alan's retirement but a number of student made...
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