Can a ring still be real gold even if there are no markings?
Đúng, it is possible. It may pre-date marking, it may have been carelessly sized and the marking cut out, the marking can wear off, there are any number of reasons for there being no marking. The only way to know for sure is to have it tested. If it is real, you could have it marked, or obtain a certificate of authenticity from a qualified expert so this doesn’t come up again. And also so you have proof that it is real. Chúc may mắn!
What is the difference between a titanium steel plated platinum ring and a 925 sterling silver plated platinum ring?
Both are probably fictitious. Who would put a titanium plating over platinum, or sterling silver plating over platinum? You put the precious metal plating over the inferior metal.
Có nên đeo nhẫn vàng gắn đá thạch anh tím không??
Thông thường người ta nên đeo thạch anh tím bằng bạc cho mục đích chiêm tinh.. Nếu bạn đang đeo nó nói chung, bạn có thể đeo nó bằng vàng.