Thank you for viewing. I purchased this about six months ago. These are Larimar earrings, a gemstone from the Caribbean Sea, one of the three major healing stones, displaying a pattern like the waves of the sea. I tend to collect stones I like, and this item was just something I looked at. According to the product description: Length: 8.1 mm Width: 6.1 mm Height: 5.0 mm K18YG (18-karat yellow gold) Earring backs are not included. I think it's rare to find Larimar with 18-karat gold. The wave pattern is subtle, but you can tell it's Larimar at a glance. In my opinion, it's a beautiful light blue stone without any brown parts. I have too many similar items, so I'd like to pass it on to someone who likes it. Thank you. Shape of earrings: Catch/Stud