Organic colour and dazzling sparkle refresh your wardrobe with these green quartz and diamond drop earrings from the EFFY™ Collection. Sterling silver 14.0 x 10.0mm emerald-cut green quartz 0.45 ct. t.w. of diamonds Lever backs A family-owned New York-based business, EFFY™ has built a reputation for unrivalled quality and flawless craftsmanship, with a sense of individuality captured in every design.