I love these beautiful earrings that Kate Middleton has worn countless of times to her engagements. They are by Kiki McDonough from her stunning Kiki Classic collection and a perfect touch of colour to any outfit and compliment any skin tone.
Kate Middleton has cleverly chosen these as they maintain focus on her face. This picture would look very different if she was wearing turquoise earrings. Other gemstones that are perfect for neutral wearing are clear stones such as lemon quartz, smokey quartz, however, if you want to pick something a bit more colourful I'd would suggest going for aqua chalcedony, or green amethyst.
Here are a few of my other favourite picks for neutral colourful gemstone drop earrings.