Diamonds are valuable only because a) they have subjective aesthetic appeal and b) are artificially scarce.
They are also the hardest material in the whole world, and thats why the same user that said that they were "intrinsecally worthless" also said that are "used as a hardening agent for many types of tools". As I noticed, that's very far from something being "intrinsecally worthless" So saying diamonds are valuable only because they are pretty or artifically scarce seems fallacious to me.
I think he was specifically referring to their monetary value. In this context "intrinsic" would imply that the worth, monetary value, whatever, exists only because of artificial or external factors.
I mean, unless Diamonds are something that cheap, free and easy to find as leafs, stones, sea water or sand, I don't think "intrinsecally worthless" is a correct terminology to define them. They sure have their own monetary value and use, even if they're not worth 1 billion dollars each. It's just the use of unnecessary and misleading hyperboles that irks me (in pretty much the same way people use to say every new card is a "strictly better" version of a past card even if this isn't true in the 99% of cases). Let's use words in the proper way or language becomes confusing and meaningless.
would diamonds (or lion's eye diamonds) have any special meaning or a high value if they were found in abundance all over the place? How many practical purposes (or deck archtypes) do they truly usefully serve?
Diamonds ARE found in abundance. Their "scarcity" is artificial, created by a monopoly by the DeBeers corporation. They aren't special at all, and are intrinsically pretty much worthless.
Diamond (usually lab-made) is used as a hardening agent for many types of tools (often drill bits). A drill bit with diamond in it can cut through much harder materials than your standard steel drill bit.
I know, that's not the point you were making, but if you're going to illustrate a point, use an example that doesn't directly contradict your point.
Can you explain in what sense you mean that Diamonds are "intrinsically pretty much worthless" when you say below that " is used as a hardening agent for many types of tools (often drill bits). A drill bit with diamond in it can cut through much harder materials than your standard steel drill bit."?
Doesn't seems that intrinsically worthless. Unless you give the word "intrinsic" and "worthless" a very different meaning from what it's wrote on the dictionaries.