I've been interested in designing stationaries, such as cards, envelopes, etc. I've seen many gold lettered stationaries, and am wondering how to print gold (luminescence) lettering.
The cheapest way to do it is with pantone gold. But that is only a avarage way to achieve gold. The real deal is to use «Hot Stamping».
A heated die presses the gold-foil onto the stationary. Which results in a realy cool gold effect.
The downside of this are the costs because you need a separate die for every size. So if you have two products with two diffrent logo sizes. you already need two diffrent die's.