I am going to go back to the basic and say the signs and houses may play a bigger role than aspects. Aspects could mean How ruthless, how persistent, and how active would they be to get their gold. So perhaps it is all in a matter of their own willpower and drive?
As for the signs and houses, notably Taurus, Capricorn, Cancer and Scorpio, Leo and Libra value money in different ways, but only because I see them who strongly desire money more than any other signs. As for houses, definitely 2nd(value), 5th(gambling), 7th(binding contracts PRE-NUPS), 8th(inheritance/life insurance?), 10th(ambitions, power), 11th(wishes, attaining goals) and 12th(secrecy).
My first candidate is Capricorn, for they are usually financially keen and it's literally in their bones. Whether they are evil gold diggers or good gold diggers, they seem to have an early mature bone to know what money means to them. Power, security or both. It's questionable if they do it out of motive or out of genuine love, but when money is involved, it's always the former, isn't it? They seem to be VERY accepting and responsible of what money usually entails. Money doesn't scare Capricorns. I think they may have invented money, in fact. Interests, anyone?
Also... Many of the self-made million, billionaires are very old within their age. Who else do you think could actually prefer a much older man/woman? It's usually in that preference of Capricorns.
I could go on about the other signs, but I won't, so I'll cut to the famous gold diggers that I know
Donald Trump's wife: Melania Knauss.
She has a LOT of Taurus and her moon is in Capricorn. I really don't know about you, but if I were to marry a bill or a millionaire, I'd be scared out of my mind the issues money would cause. How do the spouses know they won't cheat for another with that kind of status and power? I guess the difference when it comes to gold-diggers is, they have a backup plan to sue and wipe clean of their bank account.
As someone previously mentioned here, Anna Nicole Smith is another.
...and can't think of any more right now.