These are actually examples higher-end jewelry (real gold and diamonds, although mass-manufactured): http://slimages.macys.com/is/image/MCY/products/5/optimized/...
http://www.wixonjewelers.com/wp-content/uploads/2013/02/rose... in a similar pave style. You can see all the diamonds are identical, you can see the settings clearly (more metal/space to work with, easier to set)
This is another example of pave with better coverage: http://i00.i.aliimg.com/wsphoto/v4/1383610324_1/Full-stones-... Still, uniform diamonds, each one is interchangeable with every other one. In the JAR jewelry, it's obvious that each diamond was carefully chosen for its place, the settings are harder to do, and there's more color variation throughout.
There's obviously more to it than that, but that might be a good thing to look for when you're considering the artistry that went into these. Also, keep in mind, they're not really meant to be worn like day-to-day "jewelry" jewelry we're used to seeing around. They're more like tiny pieces of elaborate gemstone art.
Something also tells me that if this guy wasn't absolutely stinking rich but was just a regular grumpy 70-something, there would be significantly fewer people fawning over his egotistical temperament.
In its centre was what looked like a pale twig from a cherry-blossom tree, scattered with creamy droplets of melting snow—tiny diamond beads pierced with silvery pins, gentle, serene and exquisite. It was like a Japanese painting, and it moved me almost to tears.
Something tells me i would find it very hard to get along with these people. Anyway, to each their own i guess, it just seems sad that people get so caught up in their own bubbles to the exclusion of things "that matter". Here, i guess, lies the thorny issue: who is to say that there is an absolute measure of "mattering". Personally, i would say it's probably of more importance to work to feed the world's hungry, but i imagine that when one is among an audience who would nonchalantly drop a few hundred thousands on a Shiny Thing, there is bound to be disagreement on that. I admit though that i have no more right than they to decide what constitutes a valid cause, so i am trying to avoid judging. It just seems so, i don't know... wasteful.
You're forgetting the thing about him where he makes art that is unbelievably beautiful. He says himself he'd still do it even if his materials were worthless.
But who knows why people want to spend hundreds of thousands to own it.
"Let me tell you about the very rich. They are different from you and me. They possess and enjoy early, and it does something to them, makes them soft where we are hard, cynical where we are trustful, in a way that, unless you were born rich, it is very difficult to understand." - F. Scott Fitzgerald, "The Rich Boy"