natural curiosities found in lamps

I love a good piece of rock. The hard part is it is very hard to find a reasonably priced piece that actually looks substantial and not too cheap. Anyway for a long time I had considered making my own crystal lamp and had scoured mineral and rock shops until I decided I didn't want to go that route. I even bought a small agate lamp from Home Goods to try and satisfy my natural curiosities but alas it still looked the price I paid. Anyway when google-ing "agate lamps" I came across a reasonable priced piece that actually looks like it might do the trick. What do you think?(refer below)

Above DIY tutorial found here if you happen to be interested in tackling such a project.

Above is my wussy agate lamp that makes the below lamp actually look really good for $249.

Above lamp found here.

{All other lamps and finials found via Matthew Studios , 1stDibs and Horchow. }