QuestionQUESTION: Hello i have inherited my great grandmas engagement ring, it has 3 diamonds and i belive would be from the 1920's, definately the earlier half of the 1900's inside there is a stamp saying sh plat, i do not know whether this is silver and bears the name of the makers of if it is platinum, please could you advise? another ring i have of hers just says plat inside, what does this mean please (this is just a v plain silver looking v thin band)
Thank you
Rachel Jones
ANSWER: Hi Rachel.
If it is not stamped Plat, 900 or 950 it may be Silver.
The stamp for silver is 925
Have it checked anyway by a jeweler to be sure.
Good Luck !!
Arthur DeMello GG (GIA)
http://www.jewelryappraiser.info
http://www.nationalgemologicallabortory.com
---------- FOLLOW-UP ----------
QUESTION: I have since heard that if it says just plat, that means it is simply pure platinum which no other metal mixed in. Have you heard that?
Thanks
AnswerRachel,
Usually, Platinum contains some iridium for stability usualy 5-10%.
Have it tested to be sure.
My Platinum tester can detect 5% 10% and pure platinum.
Good Luck !!
Arthur DeMello GG (GIA)
http://www.jewelryappraiser.info
http://www.nationalgemologicallabortory.com
