to determine if it's gold your local jeweler can acid test it for you.
good luck. Judy Moore
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Sapphire & Diamond Ring | J A Jewelry Mark by: Anonymous
Hi Miranda thanks for writing in. If the gemstones are natural and not synthetics chances are good that the metal is gold. You didn't mention a dot after the initials and I have no history on this ring to go by... however
Goldsmiths that used the initials - " J A " in a rectangle shield with no dots after the letters are:
Joseph Angell (Major Goldsmiths, London, UK) - ca. 1800 - 1850s