The drywell is a large steel pressure vessel that looks like a giant upside-down pear and holds the reactor and primary pumps, and the wetwell is a large toroidal vessel that looks like a donut.

FORBES: Explainer: What Caused The Incident At Fukushima-Daiichi

Among the highlights: one very big rock, a 51-carat, flawless pear-cut diamond mined in South Africa, that is brand-new to the market.

FORBES: Cool Jewels