Berlin-based White Diamonds, which up until recently has sold cases mainly in Europe, Asia, and the Middle East, is expanding into the United States with the release of Crystal Case for iPhone 4 ($40). Packaged with one piece of screen protector film and a polishing cloth, Crystal Case is a rather basic plastic shell that differentiates itself from the crowd with glossy, colorful designs from international artists and, more uniquely, embedded Swarovski…
