In Focus: National Geographic Greatest Portraits

Give your style an extra twist. This intricate winding link chain is the perfect finishing touch. Crafted in 24k gold over sterling silver by Giani Bernini. Approximate length: 24 inches.

A whimsical piece adds creativity to an every day look. A beautiful blue topaz teardrop (6-5/8 ct. t.w.) dangles from a dazzling diamond accented butterfly. Victoria Townsend necklace crafted in sterling silver. Approximate length: 18 inches. Approximate drop: 1-3/16 inches.

Looking for the perfect finishing touch? B. Brilliant's graduated cubic zirconia necklace (14 ct. t.w.) takes your evening wear to the next level. Crafted in sterling silver. Approximate length: 17 inches.

8 Insanely Dangerous Sports-Experience pulse-pounding sports like wingsuit proximity flying, kiteboarding, whitewater kayaking, mountain biking, free fall skydiving, ETRM skiing, jungle parkour and more.

Risk It All for Greatness-Reap rewards for recklessness - the riskier your moves, the bigger the bonuses.

Conquer the Wonders of the World-From mountain top temples in the Himalayas to the tumultuous Amazon River and its world famous waterfalls, ...