9ct Gold Teardrop Peridot Drop EarringsPeridot Drop Earrings These 9ct yellow gold drop earrings feature vibrant, teardrop cut peridot gemstones. The warm tone of the 9ct gold, which is composed of 37. 5% pure gold, provides a classic setting for the bright green of the peridot. As the birthstone for August, these earrings are a thoughtful choice for those with a late summer birthday. A matching peridot pendant can also be purchased separately to create a coordinated set.