Drop earrings with 16.80 cts. t.w. peridot and 1.05 cts. t.w. rose-cut diamonds set in 18k white gold; $18,280; Sasha Primak, New York City; 866-960-8134; sashaprimak.com 
The Peridot Symbolic of truth, faithfulness, and friendship, the August birthstone, peridot, is distinguished by its vivid green color with a hint of yellow. Though it dates back to ancient Egyptian times, this gemstone is making its comeback as a complementary color match to a light summer wardrobe.