Bringing together two stunning gemstone colours, these swoosh drop earrings have elegant lines and are a visual treat for both formal and informal occasions. Swiss & London blue topaz gemstones, sit together for a striking adornment. Your friends and family are sure to compliment you on your sophistication and good taste. This beautiful earring set, when matched with the earrings, necklace and bangle will compliment any outfit with these natural colours. d. These sterling silver drop earrings measure 18mm in length and 7mm wide, they have 4mm round Swiss & London blue topaz gemstones.