The diamond dust has the same properties of larger diamonds, but the tiny diamond particles cannot be set into jewelry by themselves. It is carefully gathered after cutting, and comes to good purpose in many industries.
Larger sharks, including great whites, tiger sharks and whale sharks, travel more widely and have greater depth range in the water column. Great whites dive deeper than 1km and are seasonal visitors to temperate coastal waters, lured by the likelihood of a feed at seal and sea-lion rookeries and haul-out areas.
Most sharks are cold-blooded. Some, like the Mako and the Great white shark, are partially warmblooded (they are endotherms). Cold blooded although if you've ever seen a Great White Shark hunt sea lions you'd be thinking they would have to be hotblooded. Actually the Salmon Shark is a warm blooded shark.