100 Diagrams That Changed the World: From the Earliest Cave Paintings to the Innovation of the iPod

What better way to express yourself? Put it all on the line with Sweethearts' stylish "Love You" pendant. Crafted from sterling silver, pendant features a chic heart shape and sparkling round-cut diamonds (1/10 ct. t.w.). Approximate length: 16 inches + 2-inch extender. Approximate drop: 5/8 inch.

A timeless treasure. This luminous locket features an adorable heart shape accented by a sparkling diamond center and an elegant scroll engraving. Locket opens and closes to hold your favorite memories safe. Crafted in 14k gold. Approximate length: 18 inches. Approximate drop: 1 inch.

Are you ready for the dance floor? Unwritten's disco-ball inspired pendant necklace features a multicolored crystal design strung from a sterling silver setting and chain. Approximate length: 18 inches. Approximate drop: 2/3 inch.

Elegance and eclecticism go hand-in-hand with this hamsa pendant from B. Brilliant. Round-cut cubic zirconia accents provide a sparkling touch. Crafted in sterling silver. Approximate length: 18 inches + 3-inch extender. Approximate drop: 5/8 inch.