Image 1 of 4 Image 2 of 4 Image 3 of 4 Image 4 of 4 Polki Diamond and Botswana Agate Earrings $1,900.00 Polki Diamond slices framed in 18k yellow gold add a chic and subtle sparkle to the brown toned matching Botswana Agates. Add To Cart Added! Polki Diamond slices framed in 18k yellow gold add a chic and subtle sparkle to the brown toned matching Botswana Agates.