Kate wore these earrings during the Singapore tour in 2012.
From the website: “Lipstick Red Sponge Coral Earrings accented with a Rolled Gold chain tassel and Gold Vermeil hoops. As recently worn by the Duchess of Cambridge, Kate Middleton.”
They consist of a long gold tassel which dangles next to a pear-shaped coral drop. The earrings is attached to a French wire.
Here they are on Kate:
This was her full look for the night:
It looks like the cost of these have increased from £36 to £45. The equivalent in US currency would be $68.