I have an old ring that has been tested to be 14kt and platinum. There are no markings inside the ring except for a triangle that comprises 3 dots. Anyone know what that means?

I bought a gold/diamond ring in Greece (highly recommended jeweller). The ring is 18ct yellow gold with a 1ct diamond. When I returned to England, an English jeweller confirmed that the ring was genuine. I now want to sell the ring. Do I need to get the ring hallmarked, is this even possible? If...

I just bought a "gold" ring that was advertised as 10K gold but upon receipt I find that the mark is not exactly 10K. It has what looks to be a capital U with what looks to be an arrow passing horizontally through it from left to right, but the arrow tip is not visible, only the arrow "tail", It is...

My husband just bought me this ring overseas: it has 3 different markings on it... FU 750 (which I believe is 18k gold) but what is FU? S0 25 D0 25 The ring is white gold band with what we believe is sapphires and diamonds.

I got a gold ring give to me and it has number on the inside I know that it is quite old can eny body tell me what it means the numbers are (5316)