I'm new to the diamond game, but I have discovered that my wife to be is something of an amature enthusiast (are they born that way?), so I thought I'd better do some revision - and I reckon this site is fantastic!Recently though I have seen quite a lot of solitare engagement rings (top tip if you're thinking about it: definitely buy a ring before you propose - she might like it, which will save you heaps of trauma!), and I'm starting to get a feel for it. But what I'd like to know is how/if age affects value.I've seen a 1930's 1.4ct solitare, set in platinum costing $5300, it is round, seems very white and I can't see any flaws with a looking glass. It doesn't sparkle as much as others I've seen, which is perhaps due to an old cut? But is this too cheap? Is it likely to be a fake at this price, or is it a bargain? Or is this about right for a 1930's solitare?Comment gratefully received!