I do agree that all this "doesn't hold its value" stuff seems off-base. Want something to hold value? Buy a value stock.This topic reminds me a lot of the thread about Hermes watches depreciating. I agree with everything said above. Yet, I do not fully understand why depreciation is seen as out of the ordinary? RTW depreciates, watches depreciate, homeware depreciates, and even most bags depreciate.
For example, a Bolide 31 sells for just about 50% or less of its msrp. This belief that everything Hermes ought to appreciate in value or at least not lose any value is quite a novel concept for me. Especially, the fine jewelry depreciates a lot due to how inflated the prices have become. This is true for all brands, but alas Hermes is not seen as a jeweler. Now, I have bought many pieces including some recent high jewelry at retail, and never do I expect them to become pseudo financial investments. Most Hermes jewelry is not limited and will continue to be made for a while (likely undergoing significant price increases), so scarcity really is not at play. I see their jewelry and all pieces as investment in having something nice to wear that I fell in love with.
My (very) unpopular opinion on the subject of this is that a bundle of goods (quota bag + fine jewelry) at retail or second hand totals just about the same. The huge discount one gets on fine jewelry can easily hedge the resale price of a quota bag.
Most fine jewelry does not hold value. Even Cartier outside the Love and the Juste un Clou loses a ton of value as soon as you buy it (and even those iconic pieces do depreciate from new retail). VCA loses as soon as you leave the store, unless it's super rare. Graff (which I think is so well made) doesn't hold value.
Somewhere along the line, someone did a great job of changing the concept of "investment dressing" (you "invest" in a piece that will reward you not with a value increase but in a lasting, wearable choice) to folks actually believing that bags, jewelry, and even to some extent clothing should somehow appreciate. Maybe it was that stupid chart about Birkins appreciating faster than gold? I'd say that was faulty economics, but it wasn't even economics at all.
ETA: As far as H jewelry specifically not retaining value, look at the resale on Cartier handbags.....