Purchased from a recycling shop that handles brand-name items. A sales certificate is also included. Features a deep blue sapphire at the center, surrounded by clear diamonds. Marked k18 D0.03 S0.20. The earring backs are also marked k18. Length: approximately 7mm Width: approximately 5mm Sapphire size: approximately 4mm Similar designs are sold online for around 45,000 yen. Total weight: 1.1g Thank you.