I have a gold ring with purple stone (amethyst ?) inside the band is a lion, 18 , crown, & ship Any info would be greatly appreciated I got it from my grandfather who would be about 105 if still with us

18 and crown is the old insignia for 18k gold. Means nothing for the stone which would be rated separately.

Hi.As someone who has poured over Gold and silversmiths at the library I can suggest to look at London goldsmiths at the Library.Or go online to Hallmarks of Goldsmithes.The Lion usually indicates London Hallmark and the ship maybe the makers Hallmark!Hope this helps.Dont sell till you know exactly what you have.Also check the daily weaight of Gold.It is easy to find out on the internet.