Signet ring question

[Schiehallion]

A signet ring was used to sign and hence was used as a seal into hot wax. The Crest only was historically used and in reverse low relief so as to be the correct way round and proud when used as a seal. I would go for 9crt Gold with cornellian or jet for the stone.

[Spartan Tartan]

I think it would be cool to have in reverse (so it's correct when used as a seal). Truly a unique item among the larger masses and I would be using it to mail letter and holiday cards to everyone I knew!