The value of a diamond is determined by the famous 4 C's: color, clarity, cut, and carat weight. It is the combination of these four items that give a diamond its value. Although carat weight is the best known, a smaller diamond can be more valuable than one several times larger, depending on how the stone is rated on the other three elements. Let's consider these elements one at a time.

Photos of Nokia's upcoming Maemo 5 device have been leaked, and they reveal that it is likely a smartphone and not just a tablet. The device reflects Nokia's growing commitment to Linux.

NVIDIA today broke some ground by confirming that Intel and mainboard producers such as ASUS, EVGA, GigaByte and MSI have all licensed SLI for use with upcoming Core i5 and i7 systems. The gesture gives tested mainboards based on Intel's P55 chipset support for using two or more GeForce graphics cards in tandem. Many Intel chipsets to date have focused instead on ATI's equivalent, CrossFire, though AMD's ownership of ATI is likely to help drive Intel's addition of the NVIDIA option.

Alaska Airline launches a trial service employing a satellite-to-plane Wi-Fi system to provide in-flight broadband for laptops, PDAs and other mobile and wireless Wi-Fi-enabled devices. Along with providing Wi-Fi connections for passengers, Row 44's satellite-based technology also provides the airlines with a broadband link for operational data.