These are compositionally the same as mined diamonds, right down to the same sparkly atoms - but they've been grown in a lab instead of dug from the earth. On the face of it, it seems more ...

Cloudy. High chance of showers along the coastal fringe, medium chance elsewhere. The chance of a thunderstorm, possibly severe near the coast. Winds east to southeasterly 15 to 25 km/h. Sun ...